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  • PHP GD issues with ImageCreateTrueColor and PNGs

    - by DrPheltRight
    I am resizing PNG images using the GD image library function ImageCopyResampled(). It all works fine, I can even keep alpha blending transparency with the use of ImageCreateTrueColor() rather than using ImageCreate() to create the resized image. The problem is, that if I use ImageCreateTrueColor() rather than ImageCreate() the file size of PNG files increases from something like 80kb to 150kb. If I use ImageCreate() the file size stays around the same size, but colors screw! So my question is, how can I retain alpha blending when resizing PNG images without increasing the file size? Oh and I am reducing the dimensions of the PNGs.

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  • How to assign variable dynamically to php list function

    - by ravisoni
    What I am doing that I want to generate a list based on how many items are in an array, so I have counted the items and loop over them, create a number based var and construct a string $var which contains $a1,$a2.... and assigns the $var to list list($var) and tried to access $a1 but it gives me the error "Undefined variable: a1" Is there any other way to do it? Here is my code: $arr = array('1','2','3'); $listsize = count($arr); $var=''; for($i=1;$i<=$listsize;$i++){ $var.='$a'.$i; if($i!=$listsize){ $var.=','; } } list($var) = $arr; echo $a1;

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  • Using regex to strip out certain data from HTML code via PHP

    - by Chris
    I have the following HTML snippet <tr> <td class="1">...</td> <td class="2">...</td> <td class="3">...</td> <td class="4">...</td> </tr> etc... I basically have N rows, and each row contains 4 TD's each with a unique class. I would like a simple way to split out all the rows and TD's by class so I can choose what data I want to use. I expect the easiest way to achieve this would be regex (maybe two). One to split up the TR's then another to split up the TDs (by class preferably) Thanks

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  • PHP: Remove all fcn not acting as expected, Code Inside

    - by Josh K
    I made this simple function (remove all $elem from $array): function remall($array, $elem) { for($i=0; $i < count($array); $i++) if($array[$i] == $elem) unset($array[$i]); $newarray = array_values($array); return $newarray; } But it isn't working perfectly, here are some inputs and outputs $u = array(1, 7, 2, 7, 3, 7, 4, 7, 5, 7, 6, 7); $r = remall($u, 7); Output of $r: 12345767 $n = array(7, 7, 1, 7, 3, 4, 6, 7, 2, 3, 1, -3, 10, 11, 7, 7, 7, 2, 7); $r = remall($n, 7); Output of $r: 1346231-30117727 Notice how there are still 7s in my outputs. Also, My function will only be removing numbers from an array. Let me know if you spot something, thanks.

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  • PHP parameter without value using for navigation

    - by somewalri
    Hello, I am trying to set up a navigation system that uses GET parameters with no value, example: http://foo.bar/?mainPage takes the visitor to the main page. So I am using if statements and I am wondering if there is a way I can do this without a bunch of if statements? I don't think switch statements would work for this. This is currently what I have: $mainPage = $_GET['mainPage']; $contact = $_GET['contact']; if(isset($mainPage)) { // go to main page } if(isset($contact)) { // go to contact page } I don't want to have to end up writing a ton of if statements, though. Any ideas? Thanks.

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  • "Distance" between colours in PHP

    - by Phil
    I'm looking for a function that can accurately represent the distance between two colours as a number or something. For example I am looking to have an array of HEX values or RGB arrays and I want to find the most similar colour in the array for a given colour eg. I pass a function a RGB value and the 'closest' colour in the array is returned

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  • Substr from end of string php?

    - by Gorostas
    I have this kind of array, i will make it very simple to understand $picture = ( 'artist2-1_thumb.jpg', 'artist2-2.jpg' , 'artist2-3_thumb.jpg', 'artist2-4.jpg', 'artist2-5_thumb.jpg'); Now i want use substr to get new array that only have thumb, to have new array like this $picturethumbs = ( 'artist2-1_thumb.jpg', 'artist2-3_thumb.jpg', 'artist2-5_thumb.jpg'); Can some substr but where to start?

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  • function_exists php

    - by user527800
    Hi all I'm trying to write a function that could receive it's second arg a name of a function. In order to validate function's name (that will be used in an eval statement) I use function_exists such as: if(function_exists($type)){ $toEval= $type.'(\''.$file.'\');'; }else{ But if the arg sent is include or require (with 'once' variations) this code fails (function_exists returns false). How could this be fixed? Thanks, Alex

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  • PHP/regex: matching/replacing 24-hour times

    - by confusedphpnoob
    Hi, How can I take a line like this: Digital Presentation (10:45), (11:30), 12:00, 12:40, 13:20, 14:00, 14:40, 15:20, 16:00, 16:40, 17:20, 18:00, 18:40, 19:20, 20:00, 20:40, 21:20, 22:00, 22:40, 23:10, 23:40. And match all the 24 hour times so I can convert to a more human readable format using date()? Also I want to match times in the 24:00-24:59 range too Thanks!

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  • Clone XML node PHP

    - by Kemrop
    I want to grab an xml node with its attributes plus all the chilren with their attributes and move them to a different node in the same XML file.I believe cloneNode is the most closest thing i can use.Right? Again to be more specific i am using DOM and Xpath to query the node.

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  • PHP sort multidimensional array by value

    - by stef
    How can I sort this array by the value of the "order" key? Even though the values are currently sequential, they will not always be. Array ( [0] => Array ( [hashtag] => a7e87329b5eab8578f4f1098a152d6f4 [title] => Flower [order] => 3 ) [1] => Array ( [hashtag] => b24ce0cd392a5b0b8dedc66c25213594 [title] => Free [order] => 2 ) [2] => Array ( [hashtag] => e7d31fc0602fb2ede144d18cdffd816b [title] => Ready [order] => 1 ) )

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  • A self-creator: What pattern is this? php

    - by user151841
    I have several classes that are basically interfaces to database rows. Since the class assumes that a row already exists ( __construct expects a field value ), there is a public static function that allows creation of the row and returns an instance of the class. Here's a pseudo-code example : class fruit { public $id; public function __construct( $id ) { $this->id = $id; $sql = "SELECT * FROM Fruits WHERE id = $id"; ... $this->arrFieldValues[$field] = $row[$value]; } public function __get( $var ) { return $this->arrFieldValues[$var]; } public function __set( $var, $val ) { $sql = "UPDATE fruits SET $var = $val WHERE id = $this->id"; } public static function create( $id ) { $sql = "INSERT INTO Fruits ( fruit_name ) VALUE ( '$fruit' )"; $id = mysql_insert_id(); $fruit = & new fruit($id); return $fruit; } } $obj1 = fruit::create( "apple" ); $obj2 = & new fruit( 12 ); What is this pattern called? Edit: I changed the example to one that has more database-interface functionality. For most of the time, this kind of class would be instantiated normally, through __construct(). But sometimes when you need to create a new row first, you would call create().

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  • PHP MySQL query help

    - by user547794
    Hello, I am trying to use this query to return every instance where the variable $d['userID'] is equal to the User ID in a separate table, and then echo the username tied to that user ID. Here's what I have so far: $uid = $d['userID']; $result = mysql_query("SELECT u.username FROM users u LEFT JOIN comments c ON c.userID = u.id WHERE u.id = $uid;")$row = mysql_fetch_assoc($result); echo $row['username'];

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  • display php foreach values in div

    - by San82moon
    Hi, I have foreach ($a as $key = $value) { echo $value; } which displays result one below other, like 1234 5678 2010-05-20 5678 1590 2010-05-19 but i want it in a table like structure like 1234 5678 2010-05-20 5678 1590 2010-05-19 how can i do that?

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  • (PHP) - Changing two substrings inside a string

    - by Imp4ct
    This is my BIG string BEGIN:VEVENT UID:xxxxxx DTSTAMP:xxxxxx STATUS:CONFIRMED CLASS:PUBLIC URL:xxxxxx SUMMARY:YYYYYYY DESCRIPTION:xxxxxx; YYYYYYY; DTSTART:xxxxxx DTEND:xxxxxx GEO:xxxxxx LOCATION:xxxxxx END:VEVENT I need to change position of the two "YYYYYYY" in SUMMARY/DESCRIPTION I have to replace them without being specific since it is implemented in a much larger function. (This string is already sliced out of a 3700 line - Calendar) pls help! :)

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  • how to change default mailed by : address in php mail()

    - by testkhan
    i have the following code $subject = "Subject Here"; $headers = 'MIME-Version: 1.0' . "\r\n"; $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n"; // Additional headers $headers .= 'From: Domain Name <[email protected]>' . "\r\n"; $to = $email; $body = ' My Message here '; mail($to, $subject, $body, $headers); and it send mail correctly but when i see details in the email in gmail ... it shows from Domain Name to [email protected] date Tue, May 25, 2010 at 12:41 PM subject my subject here mailed-by mars.myhostingcompany.net while i want to show my own address in mailed by section so that it should be mydomain.com instead of mars.myhostingcompany.net

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  • How to open multiple socket connections and do callbacks in PHP

    - by Click Upvote
    I'm writing some code which processes a queue of items. The way it works is this: Get the next item flagged as needing to be processed from the mysql database row. Request some info from a google API using Curl, wait until the info is returned. Do the remainder of the processing based on the info returned. Flag the item as processed in the db, move onto the next item. The problem is that on step # 2. Google sometimes takes 10-15 seconds to return the requested info, during this time my script has to remain halted and wait. I'm wondering if I could change the code to do the following instead: Get the next 5 items to be processed as usual. Request info for items 1-5 from google, one after the other. When the info for item 1 is returned, a 'callback' should be done which calls up a function or otherwise calls some code which then does the remainder of the processing on items 1-5. And then the script starts over until all pending items in db are marked processed. How can something like this be achieved?

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