Cannot running next process when a variable save no value
- by bruine
First, I wanna compare between 2 tables tb_wrapper and tb_summary to get the data in the tb_wrapper that doesn't exist in the tb_summary then save in $link. If I don't get the same data, I want to print the result $link. When I don't get the not same data, I want it to go to another process.
Here's the code :
$q2 = mysql_query(" SELECT
a.doc_url
FROM
tb_wrapper a
LEFT JOIN
tb_summary b
ON a.doc_name = b.doc_summ
WHERE
b.doc_summ IS NULL");
while ($row = mysql_fetch_array($q2)){
$link = $row['doc_url'];
if (!$link){
include 'next_process.php';
}
else {
print_r($link);
}
}
it doesn't work. When I don't get the not same data or $link not save a value.
table :
CREATE TABLE tb1
(`id` int, `doc_name` varchar(100), `doc_url` varchar(50))
}
CREATE TABLE tb2
(`id` int, `doc_summ` varchar(100))
}
