- var_dump: documentation ( source)
- memory_get_peak_usage: documentation ( source)
- range: documentation ( source)
<?php
var_dump(memory_get_peak_usage(true));
$a = range(1, 100000);
var_dump(memory_get_peak_usage(true));
$a[-1] = 1;
var_dump(memory_get_peak_usage(true));