- strcmp: documentation ( source)
<?php
string_lt('22', '123');
function string_lt($str1, $str2)
{
# you can't use < operator for comparing strings
# wacky stuff will happen
$lt_says = ((string) $str1 < (string) $str2);
# see what strcmp() says
$strcmp_says = strcmp($str1, $str2);
echo "$str1 less than $str2; lt_says: $lt_says, strcmp_says: $strcmp_says\n";
}