#MET
MET library allows to overcome Php's max_execution_time
limit by splitting code execution into parts.
##Description
In case you cannot modify Php's max_execution_time
directive and need to execute long-running script, you can use MET to split it and rerun itself each time limit is close with saving done changes.
Before run, class checks the ability to save data:
* Start session for web request
* Execute php self_script.php
for CLI mode
###Usage examples
Say you have some script, which imports big database data into file:
<?php
require 'met/MET.php';
function mysqlClose() {
mysql_close();
}
mysql_connect('127.0.0.1', 'root', 'password') || die('Error connecting to Mysql');
mysql_select_db('bigdata_db') || die('Error switching database');
$MET = new MET();
$offset = $MET->value('offset', 0);
$r = mysql_query('SELECT * FROM logs ORDER BY id LIMIT '.$offset.' LIMIT 50');
while($row = mysql_fetch_assoc($r)) {
appendToLogFile($row);
++$offset;
$MET->check('offset', $offset, 'mysqlClose');
}
mysqlClose();
Here we define $offset
variable (0 for first call) and after each row iteration check whether time limit is close.
If reload is needed, $offset
variable is updated to current value and user-defined mysqlClose
function is called before exit to close existing Mysql connection.