- var_dump: documentation ( source)
- memory_get_usage: documentation ( source)
- range: documentation ( source)
<?php
$foo = 'foo';
var_dump(memory_get_usage());
foreach (range(1,100) as $i) {
$$i = $foo;
}
var_dump(memory_get_usage());
foreach (range(1,100) as $y) {
$$y &= $foo;
}
var_dump(memory_get_usage());