pre php ini_set memory_limit 512M echo memory_get_usage true 1024 1024

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  • 10 Apr 2014 
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<pre>

<?php

ini_set('memory_limit', '512M');



/*

echo memory_get_usage(true)/1024/1024, "МБ\n";

$var = array_fill(0, 100000, null);

echo memory_get_usage(true)/1024/1024, "МБ\n";

#result = 0.75МБ 13.5МБ

*/





/*

echo memory_get_usage(true)/1024/1024, "МБ\n";

for ($i = 0; $i < 100000; $i++)$var[$i] = null;

echo memory_get_usage(true)/1024/1024, "МБ\n";

# result = 0.75МБ 21МБ

*/



/*

$tmp = null;

echo memory_get_usage(true)/1024/1024, "МБ\n";

for ($i = 0; $i < 100000; $i++)$var[$i] = $tmp;

echo memory_get_usage(true)/1024/1024, "МБ\n";

# result = 0.75МБ 13.5МБ

*/



$var = array_fill(0, 100001, null);

$counter = 0;



foreach ($var as $v) {

    if ($counter % 10000 == 0) echo memory_get_usage(true)/1024/1024, "МБ\n";

    $counter++;

}



echo "---\n\n\n";



$counter = 0;



foreach ($var as &$v) {

    if ($counter % 10000 == 0) echo memory_get_usage(true)/1024/1024, "МБ\n";

    $counter++;

}

?>

</pre>
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