3v4l.org

run code in 300+ PHP versions simultaneously
<?php function concat_path_components($path_components) { $first_component = array_shift($path_components); if ($first_component == NULL) return ""; return array_reduce( $path_components, function ($path, $path_component) { return $path . DIRECTORY_SEPARATOR . $path_component; }, $first_component); } function path_components($path) { $components = array(); while ($path != "." && $path != "/") { array_unshift($components, basename($path)); $path = dirname($path); } if ($path == "/") array_unshift($components, "/"); return $components; } function path_relative_to($path, $rel) { $path_components = path_components($path); $copy = $path_components; $rel_components = path_components($rel); for($i = 0 ; $i < count($rel_components) ; ++$i) { if ($path_components[$i] == $rel[$i]) array_shift($copy); else break; } echo $i, count($rel_components); if ($i == count($rel_components) -1) return concat_path_components($copy); else return ""; } var_dump(path_relative_to("/a/b/c", "/a/bc"));
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
23string(3) "b/c"
Output for 5.2.3 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/5eDIF on line 12
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.2
<br /> <b>Parse error</b>: syntax error, unexpected T_FUNCTION in <b>/in/5eDIF</b> on line <b>12</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
<br /> <b>Parse error</b>: parse error, unexpected T_FUNCTION in <b>/in/5eDIF</b> on line <b>12</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error in <b>/in/5eDIF</b> on line <b>12</b><br />
Process exited with code 255.

preferences:
328.42 ms | 401 KiB | 464 Q