Search Results

Search found 1004 results on 41 pages for 'students'.

Page 41/41 | < Previous Page | 37 38 39 40 41 

  • Why does C qicksort function implementation works much slower (tape comparations, tape swapping) than bobble sort function?

    - by Artur Mustafin
    I'm going to implement a toy tape "mainframe" for a students, showing the quickness of "quicksort" class functions (recursive or not, does not really matters, due to the slow hardware, and well known stack reversal techniques) comparatively to the "bubblesort" function class, so, while I'm clear about the hardware implementation ans controllers, i guessed that quicksort function is much faster that other ones in terms of sequence, order and comparation distance (it is much faster to rewind the tape from the middle than from the very end, because of different speed of rewind). Unfortunately, this is not the true, this simple "bubble" code shows great improvements comparatively to the "quicksort" functions in terms of comparison distances, direction and number of comparisons and writes. So I have 3 questions: Does I have mistaken in my implememtation of quicksort function? Does I have mistaken in my implememtation of bubblesoft function? If not, why the "bubblesort" function is works much faster in (comparison and write operations) than "quicksort" function? I already have a "quicksort" function: void quicksort(float *a, long l, long r, const compare_function& compare) { long i=l, j=r, temp, m=(l+r)/2; if (l == r) return; if (l == r-1) { if (compare(a, l, r)) { swap(a, l, r); } return; } if (l < r-1) { while (1) { i = l; j = r; while (i < m && !compare(a, i, m)) i++; while (m < j && !compare(a, m, j)) j--; if (i >= j) { break; } swap(a, i, j); } if (l < m) quicksort(a, l, m, compare); if (m < r) quicksort(a, m, r, compare); return; } } and the kind of my own implememtation of the "bubblesort" function: void bubblesort(float *a, long l, long r, const compare_function& compare) { long i, j, k; if (l == r) { return; } if (l == r-1) { if (compare(a, l, r)) { swap(a, l, r); } return; } if (l < r-1) { while(l < r) { i = l; j = l; while (i < r) { i++; if (!compare(a, j, i)) { continue; } j = i; } if (l < j) { swap(a, l, j); } l++; i = r; k = r; while(l < i) { i--; if (!compare(a, i, k)) { continue; } k = i; } if (k < r) { swap(a, k, r); } r--; } return; } } I have used this sort functions in a test sample code, like this: #include <stdio.h> #include <stdlib.h> #include <math.h> #include <conio.h> long swap_count; long compare_count; typedef long (*compare_function)(float *, long, long ); typedef void (*sort_function)(float *, long , long , const compare_function& ); void init(float *, long ); void print(float *, long ); void sort(float *, long, const sort_function& ); void swap(float *a, long l, long r); long less(float *a, long l, long r); long greater(float *a, long l, long r); void bubblesort(float *, long , long , const compare_function& ); void quicksort(float *, long , long , const compare_function& ); void main() { int n; printf("n="); scanf("%d",&n); printf("\r\n"); long i; float *a = (float *)malloc(n*n*sizeof(float)); sort(a, n, &bubblesort); print(a, n); sort(a, n, &quicksort); print(a, n); free(a); } long less(float *a, long l, long r) { compare_count++; return *(a+l) < *(a+r) ? 1 : 0; } long greater(float *a, long l, long r) { compare_count++; return *(a+l) > *(a+r) ? 1 : 0; } void swap(float *a, long l, long r) { swap_count++; float temp; temp = *(a+l); *(a+l) = *(a+r); *(a+r) = temp; } float tg(float x) { return tan(x); } float ctg(float x) { return 1.0/tan(x); } void init(float *m,long n) { long i,j; for (i = 0; i < n; i++) { for (j=0; j< n; j++) { m[i + j*n] = tg(0.2*(i+1)) + ctg(0.3*(j+1)); } } } void print(float *m, long n) { long i, j; for(i = 0; i < n; i++) { for(j = 0; j < n; j++) { printf(" %5.1f", m[i + j*n]); } printf("\r\n"); } printf("\r\n"); } void sort(float *a, long n, const sort_function& sort) { long i, sort_compare = 0, sort_swap = 0; init(a,n); for(i = 0; i < n*n; i+=n) { if (fmod (i / n, 2) == 0) { compare_count = 0; swap_count = 0; sort(a, i, i+n-1, &less); if (swap_count == 0) { compare_count = 0; sort(a, i, i+n-1, &greater); } sort_compare += compare_count; sort_swap += swap_count; } } printf("compare=%ld\r\n", sort_compare); printf("swap=%ld\r\n", sort_swap); printf("\r\n"); }

    Read the article

  • graph with database

    - by Flip_novidade
    I need to make two graphs with data coming from the database. I do not know where I am going wrong. If someone can show me the correct way, or provide any examples. must be two graphs, a graph of a specific student another graph of all students thank you public class NotasBean { private Notas notas; private Notas selectedNotas; private List<Notas> filtroNotass; public Notas getNotas() { return notas; } public void setNotas(Notas notas) { this.notas = notas; } public Notas getSelectedNotas() { return selectedNotas; } public void setSelectedNotas(Notas selectedNotas) { this.selectedNotas = selectedNotas; } public List<Notas> getFiltroNotass() { return filtroNotass; } public void setFiltroNotass(List<Notas> filtroNotass) { this.filtroNotass = filtroNotass; } public void prepararAdicionarNotas(){ notas = new Notas(); } public void adicionarNotas(){ dao.NotasDao obj_dao = new dao.NotasDao(); obj_dao.save(notas); } } package dao; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.Statement; import java.util.ArrayList; import java.util.List; import javax.faces.application.FacesMessage; import javax.faces.context.FacesContext; import model.Aluno; import model.Notas; import model.Notas; public class NotasDao { private Conexao obj_conexao; public NotasDao() { obj_conexao = new Conexao(); } public List<Notas> list() { List<Notas> array_registros = new ArrayList<Notas>(); try { String sql = "Select alu_in_ra, dis_st_sigla, ald_fl_p1, ald_fl_p2, ald_fl_p3, ald_fl_trab1, ald_fl_trab2 from cad_aluno_disciplina"; Statement comando_sql = (Statement) obj_conexao.getConexao() .createStatement(); ResultSet obj_result = comando_sql.executeQuery(sql); while (obj_result.next()) { Notas obj_notas = new Notas(); obj_notas.setAlura(obj_result.getInt("alu_in_ra")); obj_notas.setDiscsigla(obj_result.getString("dis_st_sigla")); obj_notas.setP1(obj_result.getInt("ald_fl_p1")); obj_notas.setP2(obj_result.getInt("ald_fl_p2")); obj_notas.setP3(obj_result.getInt("ald_fl_p3")); obj_notas.setTrb1(obj_result.getInt("ald_fl_trab1")); obj_notas.setTrb2(obj_result.getInt("ald_fl_trab2")); array_registros.add(obj_notas); } } catch (Exception e) { System.out.println("Erro no select" + e.getMessage()); } finally { obj_conexao.fecharConexao(); } return array_registros; } public void select(Aluno obj_aluno){ FacesContext mensagem = FacesContext.getCurrentInstance(); try{ String comando_sql = "Select alu_in_ra, dis_st_sigla, ald_fl_p1, ald_fl_p2, ald_fl_p3, ald_fl_trab1, ald_fl_trab2 from cad_aluno_disciplina where alu_in_ra=?"; PreparedStatement obj_sql = (PreparedStatement) obj_conexao.getConexao().prepareStatement(comando_sql); obj_sql.setInt(1, obj_aluno.getRa()); obj_sql.executeUpdate(); mensagem.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_WARN, "Erro ao selecionar aluno!","Snif")); }catch(Exception e){ mensagem.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_FATAL, "Erro na inclusão: "+e.getMessage()," Ocoreu o erro: "+e.getMessage())); }finally{ obj_conexao.fecharConexao(); } return; } }//fecha a classe package model; import java.io.Serializable; public class Notas implements Serializable{ private static final long serialVersionUID = 1L; private int alura; private String discsigla; private float p1; private float p2; private float p3; private float trb1; private float trb2; public Notas() { } public Notas (int alura, String discsigla, float p1, float p2, float p3, float trb1, float trb2){ super(); this.alura=alura; this.discsigla=discsigla; this.p1=p1; this.p2=p2; this.p3=p3; this.trb1=trb1; this.trb2=trb2; } public int getAlura() { return alura; } public void setAlura(int alura) { this.alura = alura; } public String getDiscsigla() { return discsigla; } public void setDiscsigla(String discsigla) { this.discsigla = discsigla; } public float getP1() { return p1; } public void setP1(float p1) { this.p1 = p1; } public float getP2() { return p2; } public void setP2(float p2) { this.p2 = p2; } public float getP3() { return p3; } public void setP3(float p3) { this.p3 = p3; } public float getTrb1() { return trb1; } public void setTrb1(float trb1) { this.trb1 = trb1; } public float getTrb2() { return trb2; } public void setTrb2(float trb2) { this.trb2 = trb2; } } <p:panel header="Grafico Notas Aluno" style="width: 550px"> <p:lineChart id="linear" value="#{notasDao.aluno.alura}" var="notas" xfield="#{notas.alura}" height="300px" width="500px" style="chartStyle"> <p:chartSeries label="Prova 1" value="#{notas.p1}" /> <p:chartSeries label="Prova 2" value="#{notas.p2}" /> <p:chartSeries label="Prova 3" value="#{notas.p3}" /> <p:chartSeries label="Trabalho 1" value="#{notas.trb1}" /> <p:chartSeries label="Trabalho 2" value="#{notas.trb2}" /> </p:lineChart> </p:panel> <p:panel header="Grafico Notas" style="width: 550px"> <p:lineChart id="linear" value="#{notasDao.natas}" var="notas" xfield="#{notas.p1}" height="300px" width="500px" style="chartStyle"> <p:chartSeries label="Prova 1" value="#{notas.p1}" /> <p:chartSeries label="Prova 2" value="#{notas.p2}" /> <p:chartSeries label="Prova 3" value="#{notas.p3}" /> <p:chartSeries label="Trabalho 1" value="#{notas.trb1}" /> <p:chartSeries label="Trabalho 2" value="#{notas.trb2}" /> </p:lineChart> </p:panel>

    Read the article

  • c++ queue template

    - by Dalton Conley
    ALright, pardon my messy code please. Below is my queue class. #include <iostream> using namespace std; #ifndef QUEUE #define QUEUE /*---------------------------------------------------------------------------- Student Class # Methods # Student() // default constructor Student(string, int) // constructor display() // out puts a student # Data Members # Name // string name Id // int id ----------------------------------------------------------------------------*/ class Student { public: Student() { } Student(string iname, int iid) { name = iname; id = iid; } void display(ostream &out) const { out << "Student Name: " << name << "\tStudent Id: " << id << "\tAddress: " << this << endl; } private: string name; int id; }; // define a typedef of a pointer to a student. typedef Student * StudentPointer; template <typename T> class Queue { public: /*------------------------------------------------------------------------ Queue Default Constructor Preconditions: none Postconditions: assigns default values for front and back to 0 description: constructs a default empty Queue. ------------------------------------------------------------------------*/ Queue() : myFront(0), myBack(0) {} /*------------------------------------------------------------------------ Copy Constructor Preconditions: requres a reference to a value for which you are copying Postconditions: assigns a copy to the parent Queue. description: Copys a queue and assigns it to the parent Queue. ------------------------------------------------------------------------*/ Queue(const T & q) { myFront = myBack = 0; if(!q.empty()) { // copy the first node myFront = myBack = new Node(q.front()); NodePointer qPtr = q.myFront->next; while(qPtr != NULL) { myBack->next = new Node(qPtr->data); myBack = myBack->next; qPtr = qPtr->next; } } } /*------------------------------------------------------------------------ Destructor Preconditions: none Postconditions: deallocates the dynamic memory for the Queue description: deletes the memory stored for a Queue. ------------------------------------------------------------------------*/ ~Queue() { NodePointer prev = myFront, ptr; while(prev != NULL) { ptr = prev->next; delete prev; prev = ptr; } } /*------------------------------------------------------------------------ Empty() Preconditions: none Postconditions: returns a boolean value. description: returns true/false based on if the queue is empty or full. ------------------------------------------------------------------------*/ bool empty() const { return (myFront == NULL); } /*------------------------------------------------------------------------ Enqueue Preconditions: requires a constant reference Postconditions: allocates memory and appends a value at the end of a queue description: ------------------------------------------------------------------------*/ void enqueue(const T & value) { NodePointer newNodePtr = new Node(value); if(empty()) { myFront = myBack = newNodePtr; newNodePtr->next = NULL; } else { myBack->next = newNodePtr; myBack = newNodePtr; newNodePtr->next = NULL; } } /*------------------------------------------------------------------------ Display Preconditions: requires a reference of type ostream Postconditions: returns the ostream value (for chaining) description: outputs the contents of a queue. ------------------------------------------------------------------------*/ void display(ostream & out) const { NodePointer ptr; ptr = myFront; while(ptr != NULL) { out << ptr->data << " "; ptr = ptr->next; } out << endl; } /*------------------------------------------------------------------------ Front Preconditions: none Postconditions: returns a value of type T description: returns the first value in the parent Queue. ------------------------------------------------------------------------*/ T front() const { if ( !empty() ) return (myFront->data); else { cerr << "*** Queue is empty -- returning garbage value ***\n"; T * temp = new(T); T garbage = * temp; delete temp; return garbage; } } /*------------------------------------------------------------------------ Dequeue Preconditions: none Postconditions: removes the first value in a queue ------------------------------------------------------------------------*/ void dequeue() { if ( !empty() ) { NodePointer ptr = myFront; myFront = myFront->next; delete ptr; if(myFront == NULL) myBack = NULL; } else { cerr << "*** Queue is empty -- " "can't remove a value ***\n"; exit(1); } } /*------------------------------------------------------------------------ pverloaded = operator Preconditions: requires a constant reference Postconditions: returns a const type T description: this allows assigning of queues to queues ------------------------------------------------------------------------*/ Queue<T> & operator=(const T &q) { // make sure we arent reassigning ourself // e.g. thisQueue = thisQueue. if(this != &q) { this->~Queue(); if(q.empty()) { myFront = myBack = NULL; } else { myFront = myBack = new Node(q.front()); NodePointer qPtr = q.myFront->next; while(qPtr != NULL) { myBack->next = new Node(qPtr->data); myBack = myBack->next; qPtr = qPtr->next; } } } return *this; } private: class Node { public: T data; Node * next; Node(T value, Node * first = 0) : data(value), next(first) {} }; typedef Node * NodePointer; NodePointer myFront, myBack, queueSize; }; /*------------------------------------------------------------------------ join Preconditions: requires 2 queue values Postconditions: appends queue2 to the end of queue1 description: this function joins 2 queues into 1. ------------------------------------------------------------------------*/ template <typename T> Queue<T> join(Queue<T> q1, Queue<T> q2) { Queue<T> q1Copy(q1), q2Copy(q2); Queue<T> jQueue; while(!q1Copy.empty()) { jQueue.enqueue(q1Copy.front()); q1Copy.dequeue(); } while(!q2Copy.empty()) { jQueue.enqueue(q2Copy.front()); q2Copy.dequeue(); } cout << jQueue << endl; return jQueue; } /*---------------------------------------------------------------------------- Overloaded << operator Preconditions: requires a constant reference and a Queue of type T Postconditions: returns the ostream (for chaining) description: this function is overloaded for outputing a queue with << ----------------------------------------------------------------------------*/ template <typename T> ostream & operator<<(ostream &out, Queue<T> &s) { s.display(out); return out; } /*---------------------------------------------------------------------------- Overloaded << operator Preconditions: requires a constant reference and a reference of type Student Postconditions: none description: this function is overloaded for outputing an object of type Student. ----------------------------------------------------------------------------*/ ostream & operator<<(ostream &out, Student &s) { s.display(out); } /*---------------------------------------------------------------------------- Overloaded << operator Preconditions: requires a constant reference and a reference of a pointer to a Student object. Postconditions: none description: this function is overloaded for outputing pointers to Students ----------------------------------------------------------------------------*/ ostream & operator<<(ostream &out, StudentPointer &s) { s->display(out); } #endif Now I'm having some issues with it. For one, when I add 0 to a queue and then I output the queue like so.. Queue<double> qdub; qdub.enqueue(0); cout << qdub << endl; That works, it will output 0. But for example, if I modify that queue in any way.. like.. assign it to a different queue.. Queue<double> qdub1; Queue<double> qdub2; qdub1.enqueue(0; qdub2 = qdub1; cout << qdub2 << endl; It will give me weird values for 0 like.. 7.86914e-316. Help on this would be much appreciated!

    Read the article

  • Blank Mail from PHP application

    - by brettlwilliams
    Problem: Blank email from PHP web application. Confirmed: App works in Linux, has various problems in Windows server environment. Blank emails are the last remaining problem. PHP Version 5.2.6 on the server I'm a librarian implementing a PHP based web application to help students complete their assignments.I have installed this application before on a Linux based free web host and had no problems. Email is controlled by two files, email_functions.php and email.php. While email can be sent, all that is sent is a blank email. My IT department is an ASP only shop, so I can get little to no help there. I also cannot install additional libraries like PHPmail or Swiftmailer. You can see a functional copy at http://rpc.elm4you.org/ You can also download a copy from Sourceforge from the link there. Thanks in advance for any insight into this! email_functions.php <?php /********************************************************** Function: build_multipart_headers Author: Michael Berkowski Last Modified: September 2007 *********************************************************** Purpose: Creates email headers for a message of type multipart/mime This will include a plain text part and HTML. **********************************************************/ function build_multipart_headers($boundary_rand) { global $EMAIL_FROM_DISPLAY_NAME, $EMAIL_FROM_ADDRESS, $CALC_PATH, $CALC_TITLE, $SERVER_NAME; // Using \n instead of \r\n because qmail doubles up the \r and screws everything up! $crlf = "\n"; $message_date = date("r"); // Construct headers for multipart/mixed MIME email. It will have a plain text and HTML part $headers = "X-Calc-Name: $CALC_TITLE" . $crlf; $headers .= "X-Calc-Url: http://{$SERVER_NAME}/{$CALC_PATH}" . $crlf; $headers .= "MIME-Version: 1.0" . $crlf; $headers .= "Content-type: multipart/alternative;" . $crlf; $headers .= " boundary=__$boundary_rand" . $crlf; $headers .= "From: $EMAIL_FROM_DISPLAY_NAME <$EMAIL_FROM_ADDRESS>" . $crlf; $headers .= "Sender: $EMAIL_FROM_DISPLAY_NAME <$EMAIL_FROM_ADDRESS>" . $crlf; $headers .= "Reply-to: $EMAIL_FROM_DISPLAY_NAME <$EMAIL_FROM_ADDRESS>" . $crlf; $headers .= "Return-Path: $EMAIL_FROM_DISPLAY_NAME <$EMAIL_FROM_ADDRESS>" . $crlf; $headers .= "Date: $message_date" . $crlf; $headers .= "Message-Id: $boundary_rand@$SERVER_NAME" . $crlf; return $headers; } /********************************************************** Function: build_multipart_body Author: Michael Berkowski Last Modified: September 2007 *********************************************************** Purpose: Builds the email body content to go with the headers from build_multipart_headers() **********************************************************/ function build_multipart_body($plain_text_message, $html_message, $boundary_rand) { //$crlf = "\r\n"; $crlf = "\n"; $boundary = "__" . $boundary_rand; // Begin constructing the MIME multipart message $multipart_message = "This is a multipart message in MIME format." . $crlf . $crlf; $multipart_message .= "--{$boundary}{$crlf}Content-type: text/plain; charset=\"us-ascii\"{$crlf}Content-Transfer-Encoding: 7bit{$crlf}{$crlf}"; $multipart_message .= $plain_text_message . $crlf . $crlf; $multipart_message .= "--{$boundary}{$crlf}Content-type: text/html; charset=\"iso-8859-1\"{$crlf}Content-Transfer-Encoding: 7bit{$crlf}{$crlf}"; $multipart_message .= $html_message . $crlf . $crlf; $multipart_message .= "--{$boundary}--$crlf$crlf"; return $multipart_message; } /********************************************************** Function: build_step_email_body_text Author: Michael Berkowski Last Modified: September 2007 *********************************************************** Purpose: Returns a plain text version of the email body to be used for individually sent step reminders **********************************************************/ function build_step_email_body_text($stepnum, $arr_instructions, $dates, $query_string, $teacher_info ,$name, $class, $project_id) { global $CALC_PATH, $CALC_TITLE, $SERVER_NAME; $step_email_body =<<<BODY $CALC_TITLE Step $stepnum: {$arr_instructions["step$stepnum"]["title"]} Name: $name Class: $class BODY; $step_email_body .= build_text_single_step($stepnum, $arr_instructions, $dates, $query_string, $teacher_info); $step_email_body .= "\n\n"; $step_email_body .=<<<FOOTER The $CALC_TITLE offers suggestions, but be sure to check with your teacher to find out the best working schedule for your assignment! If you would like to stop receiving further reminders for this project, click the link below: http://$SERVER_NAME/$CALC_PATH/deleteproject.php?proj=$project_id FOOTER; // Wrap text to 78 chars per line // Convert any remaining HTML <br /> to \r\n // Strip out any remaining HTML tags. $step_email_body = strip_tags(linebreaks_html2text(wordwrap($step_email_body, 78, "\n"))); return $step_email_body; } /********************************************************** Function: build_step_email_body_html Author: Michael Berkowski Last Modified: September 2007 *********************************************************** Purpose: Same as above, but with HTML **********************************************************/ function build_step_email_body_html($stepnum, $arr_instructions, $dates, $query_string, $teacher_info, $name, $class, $project_id) { global $CALC_PATH, $CALC_TITLE, $SERVER_NAME; $styles = build_html_styles(); $step_email_body =<<<BODY <html> <head> <title> $CALC_TITLE </title> $styles </head> <body> <h1> $CALC_TITLE Schedule </h1> <strong>Name:</strong> $name <br /> <strong>Class:</strong> $class <br /> BODY; $step_email_body .= build_html_single_step($stepnum, $arr_instructions, $dates, $query_string, $teacher_info); $step_email_body .=<<<FOOTER <p> The $CALC_TITLE offers suggestions, but be sure to check with your teacher to find out the best working schedule for your assignment! </p> <p> If you would like to stop receiving further reminders for this project, <a href="http://{$SERVER_NAME}/$CALC_PATH/deleteproject.php?proj=$project_id">click this link.</a> </p> </body> </html> FOOTER; return $step_email_body; } /********************************************************** Function: build_html_styles Author: Michael Berkowski Last Modified: September 2007 *********************************************************** Purpose: Just returns a string of <style /> for the HTML message body **********************************************************/ function build_html_styles() { $styles =<<<STYLES <style type="text/css"> body { font-family: Arial, sans-serif; font-size: 85%; } h1 { font-size: 120%; } table { border: none; } tr { vertical-align: top; } img { display: none; } hr { border: 0; } </style> STYLES; return $styles; } /********************************************************** Function: linebreaks_html2text Author: Michael Berkowski Last Modified: October 2007 *********************************************************** Purpose: Convert <br /> html tags to \n line breaks **********************************************************/ function linebreaks_html2text($in_string) { $out_string = ""; $arr_br = array("<br>", "<br />", "<br/>"); $out_string = str_replace($arr_br, "\n", $in_string); return $out_string; } ?> email.php <?php require_once("include/config.php"); require_once("include/instructions.php"); require_once("dbase/dbfunctions.php"); require_once("include/email_functions.php"); ini_set("sendmail_from", "[email protected]"); ini_set("SMTP", "mail.qatar.net.qa"); // Verify that the email has not already been sent by checking for a cookie // whose value is generated each time the form is loaded freshly. if (!(isset($_COOKIE['rpc_transid']) && $_COOKIE['rpc_transid'] == $_POST['transid'])) { // Setup some preliminary variables for email. // The scanning of $_POST['email']already took place when this file was included... $to = $_POST['email']; $subject = $EMAIL_SUBJECT; $boundary_rand = md5(rand()); $mail_type = ""; switch ($_POST['reminder-type']) { case "progressive": $arr_dbase_dates = array(); $conn = rpc_connect(); if (!$conn) { $mail_success = FALSE; $mail_status_message = "Could not register address!"; break; } // Sanitize all the data that will be inserted into table... // We need to remove "CONTENT-TYPE:" from name/class to defang them. // Additionall, we can't allow any line-breaks in those fields to avoid // hacks to email headers. $ins_name = mysql_real_escape_string($name); $ins_name = eregi_replace("CONTENT-TYPE", "...Content_Type...", $ins_name); $ins_name = str_replace("\n", "", $ins_name); $ins_class = mysql_real_escape_string($class); $ins_class = eregi_replace("CONTENT-TYPE", "...Content_Type...", $ins_class); $ins_class = str_replace("\n", "", $ins_class); $ins_email = mysql_real_escape_string($email); $ins_teacher_info = $teacher_info ? "YES" : "NO"; switch ($format) { case "Slides": $ins_format = "SLIDES"; break; case "Video": $ins_format = "VIDEO"; break; case "Essay": default: $ins_format = "ESSAY"; break; } // The transid from the previous form will be used as a project identifier // Steps will be grouped by project identifier. $ins_project_id = mysql_real_escape_string($_POST['transid'] . md5(rand())); $arr_dbase_dates = dbase_dates($dates); $arr_past_dates = array(); // Iterate over the dates array and build a SQL statement for each one. $insert_success = TRUE; // $min_reminder_date = date("Ymd", mktime(0,0,0,date("m"),date("d")+$EMAIL_REMINDER_DAYS_AHEAD,date("Y"))); for ($date_index = 0; $date_index < sizeof($arr_dbase_dates); $date_index++) { // Make sure we're using the right keys... $ins_date_index = $date_index + 1; // The insert will only happen if the date of the event is in the future. // For dates today and earlier, no insert. // For dates today or after the reminder deadline, we'll send the email immediately after the inserts. if ($arr_dbase_dates[$date_index] > (int)$min_reminder_date) { $qry =<<<QRY INSERT INTO email_queue ( NOTIFICATION_ID, PROJECT_ID, EMAIL, NAME, CLASS, FORMAT, TEACHER_INFO, STEP, MESSAGE_DATE ) VALUES ( NULL, '$ins_project_id', '$ins_email', '$ins_name', '$ins_class', '$ins_format', '$ins_teacher_info', $ins_date_index, /*step number*/ {$arr_dbase_dates[$date_index]} /* Date in the integer format yyyymmdd */ ) QRY; // Attempt to do the insert... $result = mysql_query($qry); // If even one insert fails, bail out. if (!$result) { $mail_success = FALSE; $mail_status_message = "Could not register address!"; break; } } // For dates today or earlier, store the steps=>dates in an array so the mails can // be sent immediately. else { $arr_past_dates[$ins_date_index] = $arr_dbase_dates[$date_index]; } } // Close the connection resources. mysql_close($conn); // SEND OUT THE EMAILS THAT HAVE TO GO IMMEDIATELY... // This should only be step 1, but who knows... //var_dump($arr_past_dates); for ($stepnum=1; $stepnum<=sizeof($arr_past_dates); $stepnum++) { $email_teacher_info = ($teacher_info && $EMAIL_TEACHER_REMINDERS) ? TRUE : FALSE; $boundary = md5(rand()); $plain_text_body = build_step_email_body_text($stepnum, $arr_instructions, $dates, $query_string, $email_teacher_info ,$name, $class, $ins_project_id); $html_body = build_step_email_body_html($stepnum, $arr_instructions, $dates, $query_string, $email_teacher_info ,$name, $class, $ins_project_id); $multipart_headers = build_multipart_headers($boundary); $multipart_body = build_multipart_body($plain_text_body, $html_body, $boundary); mail($to, $subject . ": Step " . $stepnum, $multipart_body, $multipart_headers, "[email protected]"); } // Set appropriate flags and messages $mail_success = TRUE; $mail_status_message = "Email address registered!"; $mail_type = "progressive"; set_mail_success_cookie(); break; // Default to a single email message. case "single": default: // We don't want to send images in the message, so strip them out of the existing structure. // This big ugly regex strips the whole table cell containing the image out of the table. // Must find a better solution... //$email_table_html = eregi_replace("<td class=\"stepImageContainer\" width=\"161px\">[\s\r\n\t]*<img class=\"stepImage\" src=\"images/[_a-zA-Z0-9]*\.gif\" alt=\"Step [1-9]{1} logo\" />[\s\r\n\t]*</td>", "\n", $table_html); // Show more descriptive text based on the value of $format switch ($format) { case "Video": $format_display = "Video"; break; case "Slides": $format_display = "Presentation with electronic slides"; break; case "Essay": default: $format_display = "Essay"; break; } $days = (int)$days; $html_message = ""; $styles = build_html_styles(); $html_message =<<<HTMLMESSAGE <html> <head> <title> $CALC_TITLE </title> $styles </head> <body> <h1> $CALC_TITLE Schedule </h1> <strong>Name:</strong> $name <br /> <strong>Class:</strong> $class <br /> <strong>Email:</strong> $email <br /> <strong>Assignment type:</strong> $format_display <br /><br /> <strong>Starting on:</strong> $date1 <br /> <strong>Assignment due:</strong> $date2 <br /> <strong>You have $days days to finish.</strong><br /> <hr /> $email_table_html </body> </html> HTMLMESSAGE; // Create the plain text version of the message... $plain_text_message = strip_tags(linebreaks_html2text(build_text_all_steps($arr_instructions, $dates, $query_string, $teacher_info))); // Add the title, since it doesn't get built in by build_text_all_steps... $plain_text_message = $CALC_TITLE . " Schedule\n\n" . $plain_text_message; $plain_text_message = wordwrap($plain_text_message, 78, "\n"); $multipart_headers = build_multipart_headers($boundary_rand); $multipart_message = build_multipart_body($plain_text_message, $html_message, $boundary_rand); $mail_success = FALSE; if (mail($to, $subject, $multipart_message, $multipart_headers, "[email protected]")) { $mail_success = TRUE; $mail_status_message = "Email sent!"; $mail_type = "single"; set_mail_success_cookie(); } else { $mail_success = FALSE; $mail_status_message = "Could not send email!"; } break; } } function set_mail_success_cookie() { // Prevent the mail from being resent on page reload. Set a timestamp cookie. // Expires in 24 hours. setcookie("rpc_transid", $_POST['transid'], time() + 86400); } ?>

    Read the article

< Previous Page | 37 38 39 40 41