- substr: documentation ( source)
- preg_match: documentation ( source)
- print_r: documentation ( source)
- array_shift: documentation ( source)
- explode: documentation ( source)
<?php
$x = "/user12345 lorem ipsum dolor";
$z = explode(' ', $x, 2);
$z[0] = substr($z[0], 5);
print_r($z);
preg_match('#^/user(\d+)\s+(.*)$#', $x, $z);
array_shift($z);
print_r($z);