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<?php $debug = 0; $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 == $arr1[0]"; } if (! strcmp($var4, $arr1[0])) { echo "got a match with strcmp"; } poor_mans_strcmp('a', 'z'); poor_mans_strcmp('q111f', 'fffff'); poor_mans_strcmp($arr1, $var2); poor_mans_strcmp($arr1[0], $var2); poor_mans_strcmp($var2, $var2); poor_mans_strcmp($arr1[0], $var3); poor_mans_strcmp($arr1[0], $var4); echo "trying the binary safe node!\n"; poor_mans_strcmp($arr1[0], $var3, 1); poor_mans_strcmp($arr1[0], $var4, 1); function poor_mans_strcmp($str1, $str2, $binary_safe = 0) { global $debug; # use old shell programming trick $str3 = 'a' . $str1; $str4 = 'a' . $str2; if ($binary_safe) { # strip null bytes to make it binary safe! $str3 = str_replace(chr(0), '', $str3); $str4 = str_replace(chr(0), '', $str4); } if ($debug) {var_dump($str3, $str4);} $result = 0; if ($str3 < $str4) { echo "$str1 is LESSTHAN $str2\n"; $result = -1; } if ($str3 > $str4) { if ($result == -1) {echo "Serious error detected, keep on trucking!\n";} $result = 1; echo "$str1 is GREATERTHAN $str2\n"; } if ($result == 0) {echo "MATCH: $str1 with $str2\n";} return $result; }
based on dAg85
Output for 5.4.0 - 7.1.0
var3 = wellostring(6) "wello" a is LESSTHAN z q111f is GREATERTHAN fffff Notice: Array to string conversion in /in/HbclE on line 31 Notice: Array to string conversion in /in/HbclE on line 43 Array is LESSTHAN woodbye wruel world wello is LESSTHAN woodbye wruel world MATCH: woodbye wruel world with woodbye wruel world wello is GREATERTHAN wello wello is LESSTHAN wello trying the binary safe node! MATCH: wello with wello MATCH: wello with wello
Output for 4.3.0 - 5.3.29
var3 = wellostring(6) "wello" a is LESSTHAN z q111f is GREATERTHAN fffff Array is LESSTHAN woodbye wruel world wello is LESSTHAN woodbye wruel world MATCH: woodbye wruel world with woodbye wruel world wello is GREATERTHAN wello wello is LESSTHAN wello trying the binary safe node! MATCH: wello with wello MATCH: wello with wello