3v4l.org

run code in 300+ PHP versions simultaneously
<?php function encode($to_encode){ $i=0; $len=strlen($to_encode); $ret=''; for($i=0;$i<$len;++$i){ $ret.=str_pad(ord($to_encode[$i]),3,"0",STR_PAD_LEFT); } return $ret; } function decode($numberstr){ $numberstr=(string)$numberstr; $ret=''; $i=0; } $str="the quick brown fox jumps over the lazy dog こどものじかん"; var_dump(encode($str));
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, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(195) "116104101032113117105099107032098114111119110032102111120032106117109112115032111118101114032116104101032108097122121032100111103032227129147227129169227130130227129174227129152227129139227130147"

preferences:
213.21 ms | 406 KiB | 371 Q