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Checking memory_limit in PHP
The ‘memory_limit’ is the maximum amount of server memory that a single PHP script is allowed to use. The value needs to be converted before comparing the threshold of memory.
For example − 64M is converted to 64 * 1024 * 1024. After this, the comparison is done and the result is printed out.
<?php $memory_limit = ini_get('memory_limit'); if (preg_match('/^(\d+)(.)$/', $memory_limit, $matches)) { if ($matches[2] == 'M') { $memory_limit = $matches[1] * 1024 * 1024; // nnnM -> nnn MB } else if ($matches[2] == 'K') { $memory_limit = $matches[1] * 1024; // nnnK -> nnn KB } } $ok = ($memory_limit >= 640 * 1024 * 1024); // at least 64M? echo '<phpmem>'; echo '<val>' . $memory_limit . '</val>'; echo '<ok>' . ($ok ? 1 : 0) . '</ok>'; echo '</phpmem>';
The output will be the memory limit of that specific environment setup.
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