<?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) { $result = 1; }
return $result;
}
- Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- var3 = w e l l ostring(6) "wello "
string(2) "aa"
string(2) "az"
int(-1)
string(6) "aq111f"
string(6) "afffff"
int(1)
Warning: Array to string conversion in /in/ZdNJX on line 22
string(6) "aArray"
string(20) "awoodbye wruel world"
int(-1)
string(6) "awello"
string(20) "awoodbye wruel world"
int(-1)
string(20) "awoodbye wruel world"
string(20) "awoodbye wruel world"
int(0)
string(6) "awello"
string(6) "awello"
int(0)
string(6) "awello"
string(6) "awello"
int(0)
- Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
- var3 = w e l l ostring(6) "wello "
string(2) "aa"
string(2) "az"
int(-1)
string(6) "aq111f"
string(6) "afffff"
int(1)
Notice: Array to string conversion in /in/ZdNJX on line 22
string(6) "aArray"
string(20) "awoodbye wruel world"
int(-1)
string(6) "awello"
string(20) "awoodbye wruel world"
int(-1)
string(20) "awoodbye wruel world"
string(20) "awoodbye wruel world"
int(0)
string(6) "awello"
string(6) "awello"
int(0)
string(6) "awello"
string(6) "awello"
int(0)
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 7.3.32 - 7.3.33
- var3 = w e l l ostring(6) "wello "
string(2) "aa"
string(2) "az"
int(-1)
string(6) "aq111f"
string(6) "afffff"
int(1)
string(6) "aArray"
string(20) "awoodbye wruel world"
int(-1)
string(6) "awello"
string(20) "awoodbye wruel world"
int(-1)
string(20) "awoodbye wruel world"
string(20) "awoodbye wruel world"
int(0)
string(6) "awello"
string(6) "awello"
int(0)
string(6) "awello"
string(6) "awello"
int(0)
preferences:
307.4 ms | 404 KiB | 422 Q