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@ 2015-12-04T14:48:07Z

<?php

$memory = memory_get_peak_usage(TRUE);
$foo = 'foo';
$foo .= 'bar';
$foo .= 'baz';
echo memory_get_peak_usage(TRUE) - $memory, PHP_EOL;

$memory = memory_get_peak_usage(TRUE);
$foo = implode('', ['foo', 'bar', 'baz']);
echo memory_get_peak_usage(TRUE) - $memory, PHP_EOL;

Output
Performance
VLD
References
Branches

memory_get_peak_usage: documentation ( source)
implode: documentation ( source)

preferences:dark modelive preview

69.16 ms | 402 KiB | 5 Q