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run code in 150+ php & hhvm versions
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<?php function hex_dump($data, $newline="\n") { static $from = ''; static $to = ''; static $width = 16; # number of bytes per line static $pad = '.'; # padding for non-visible characters if ($from==='') { for ($i=0; $i<=0xFF; $i++) { $from .= chr($i); $to .= ($i >= 0x20 && $i <= 0x7E) ? chr($i) : $pad; } } $hex = str_split(bin2hex($data), $width*2); $chars = str_split(strtr($data, $from, $to), $width); $offset = 0; foreach ($hex as $i => $line) { echo sprintf('%6X',$offset).' : '.implode(' ', str_split($line,2)) . ' [' . $chars[$i] . ']' . $newline; $offset += $width; } } $str = "\xC2\xA1Hola!"; // 7 bytes (6 characters in UTF-8) echo $str."\n"; hex_dump($str); echo"\n"; hex_dump(mb_convert_encoding($str, 'UTF-32', 'UTF-8')); echo"\n"; hex_dump(iconv('UTF-8', 'UTF-32', $str));
Output for 5.0.0 - 5.5.34, 5.6.8 - 5.6.20, 5.6.28 - 7.0.5, 7.0.14 - 7.1.0
¡Hola! 0 : c2 a1 48 6f 6c 61 21 [..Hola!] 0 : 00 00 00 a1 00 00 00 48 00 00 00 6f 00 00 00 6c [.......H...o...l] 10 : 00 00 00 61 00 00 00 21 [...a...!] 0 : ff fe 00 00 a1 00 00 00 48 00 00 00 6f 00 00 00 [........H...o...] 10 : 6c 00 00 00 61 00 00 00 21 00 00 00 [l...a...!...]
Output for 7.0.6
¡Hola! 0 : c2 a1 48 6f 6c 61 21 [..Hola!] 0 : 00 00 00 a1 00 00 00 48 00 00 00 6f 00 00 00 6c [.......H...o...l] 10 : 00 00 00 61 00 00 00 21 [...a...!] Fatal error: Uncaught Error: Call to undefined function iconv() in /in/IHiGP:40 Stack trace: #0 {main} thrown in /in/IHiGP on line 40
Process exited with code 255.
Output for 5.5.35, 5.6.21
¡Hola! 0 : c2 a1 48 6f 6c 61 21 [..Hola!] 0 : 00 00 00 a1 00 00 00 48 00 00 00 6f 00 00 00 6c [.......H...o...l] 10 : 00 00 00 61 00 00 00 21 [...a...!] Fatal error: Call to undefined function iconv() in /in/IHiGP on line 40
Process exited with code 255.
Output for 4.4.5 - 4.4.9
¡Hola! Fatal error: Call to undefined function: str_split() in /in/IHiGP on line 21
Process exited with code 255.
Output for 4.3.2 - 4.4.4
¡Hola! Fatal error: Call to undefined function: str_split() in /in/IHiGP on line 21
Process exited with code 255.
Output for 4.3.0 - 4.3.1
¡Hola! Fatal error: Call to undefined function: str_split() in /in/IHiGP on line 21