<?php
$arr1 []= 'wello';
$var2 = 'woodbye wruel world';
$var3 = pack("n*", 0x77, 0x32 + 0x33, 0x6c, 0x6e-2, 0x6f);
$var4 = pack('n*', 0x7765, 0x6c6c, 0x6f00);
echo "var3 = $var3";
var_dump($var4);
if ($var4 == $arr1[0]) {echo "$var3 == $arr1[0]"; }
var_dump(poor_mans_strcmp('a', 'z'));
var_dump(poor_mans_strcmp('q111f', 'fffff'));
var_dump(poor_mans_strcmp($arr1, $var2));
var_dump(poor_mans_strcmp($arr1[0], $var2));
var_dump(poor_mans_strcmp($var2, $var2));
var_dump(poor_mans_strcmp($arr1[0], $var3));
var_dump(poor_mans_strcmp($arr1[0], $var4));
function poor_mans_strcmp($str1, $str2)
{
# use old shell programming trick
$str3 = 'a' . $str1;
$str4 = 'a' . $str2;
# strip null bytes to make it binary safe!
$str3 = str_replace(chr(0), '', $str3);
$str4 = str_replace(chr(0), '', $str4);
var_dump($str3, $str4);
$result = 0;
if ($str3 < $str4) { $result = -1; }
if ($str3 > $str4) { if ($result == -1) {echo "Serious error detected, keep on trucking!\n";} $result = 1; }
return $result;
}
preferences:
34.95 ms | 402 KiB | 5 Q