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run code in 150+ php & hhvm versions
Bugs & Features
<?php function combineColumns(array $row, $separator) // {{{ { $combined = array(); foreach ($row as $key => $value) { if (false !== strpos($key, $separator)) { $parts = explode($separator, $key); $pkey = array_pop($parts); $ptr = &$combined; while (null !== ($part = array_shift($parts))) { if (!isset($ptr[$part]) || !is_array($ptr[$part])) { $ptr[$part] = array(); } $ptr = &$ptr[$part]; } $ptr[$pkey] = $value; unset($ptr); } else { $combined[$key] = $value; } } return $combined; } print_r(combineColumns(array( 'A' => 1, 'B_C' => 2, 'B_D_A' => 3, 'D_K_F' => 4, ), '_'));
Output for 5.1.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [A] => 1 [B] => Array ( [C] => 2 [D] => Array ( [A] => 3 ) ) [D] => Array ( [K] => Array ( [F] => 4 ) ) )
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/4KDnR on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/4KDnR on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_ARRAY, expecting ')' in /in/4KDnR on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/4KDnR on line 3
Process exited with code 255.