CODEWITHSUNDEEP
phpphp-5.2php-5.4
chicharito
chicharito

Reputation: 1087

set_time_limit is not working as expected?

<?php
set_time_limit(4);
echo  ini_get('max_execution_time'); // give value as 4
while ($i<=10) 
{
    echo "i=$i ";
    sleep(1);
    $i++;
}

output: 4i= i=1 i=2 i=3 i=4 i=5 i=6 i=7 i=8 i=9 i=10

Expected behaviour: It should end its execution after 4 seconds.

Please explain ?

Upvotes: 0

Views: 2115

Answers (2)

Rohan Kumar
Rohan Kumar

Reputation: 40639

Which version you are using?

I used the version PHP Version 5.4.7 and I got the result

4i=0 i=1 i=2 i=3 i=4
Fatal error: Maximum execution time of 4 seconds exceeded in .......

Also while setting the set_time_limit(), the duration of sleep() will be ignored in the execution time. The following illustrates:

<?php
    set_time_limit(20);
    while ($i<=10)
    {
       echo "i=$i ";
       sleep(100);
       $i++;
    }    
?>

Output:
i=0 i=1 i=2 i=3 i=4 i=5 i=6 i=7 i=8 i=9 i=10

Source From set_time_limit()

Upvotes: 1

Mangesh Parte
Mangesh Parte

Reputation: 2177

You should try this, just have a script that sleeps for more than your maximum execution time.

sleep(ini_get('max_execution_time') + 10);

Read this : Under Linux, sleeping time is ignored, but under Windows, it counts as execution time.

This is how you can get the computation time and system calls time.

// Script start
$rustart = getrusage();

// Code ...

// Script end
function rutime($ru, $rus, $index) {
    return ($ru["ru_$index.tv_sec"]*1000 + intval($ru["ru_$index.tv_usec"]/1000))
     -  ($rus["ru_$index.tv_sec"]*1000 + intval($rus["ru_$index.tv_usec"]/1000));
}

$ru = getrusage();
echo "This process used " . rutime($ru, $rustart, "utime") .
    " ms for its computations\n";
echo "It spent " . rutime($ru, $rustart, "stime") .
    " ms in system calls\n";

Upvotes: 1

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