- memory_get_peak_usage: documentation ( source)
- memory_get_usage: documentation ( source)
- shuffle: documentation ( source)
- range: documentation ( source)
- printf: documentation ( source)
<?php
$a = range(1000, 9999);
shuffle($a);
printf("%.2F MB\n%.2F MB\n", memory_get_usage() / 1024 / 1024, memory_get_peak_usage() / 1024 / 1024);