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Digg  array_change_key_case
Changes all keys in an array
(PHP 4 >= 4.2.0, PHP 5)
Example 233. array_change_key_case() example<?phpThe above example will output: ArrayCode Examples / Notes » array_change_key_caseanonymous
To change all values case simply make use of array_flip. $array = array_flip($array); $array = array_change_key_case($array , CASE_LOWER); $array = array_flip($array); aidan
This functionality is now implemented in the PEAR package PHP_Compat. More information about using this function without upgrading your version of PHP can be found on the below link: http://pear.php.net/package/PHP_Compat felix dot gilcher
Please, someone remove the note below by anonymous. Using array_flip($array); array_change_key_case($array); array_flip($array); to uppercase/lowercase all values is not only inefficient as hell, but also produces wrong results - it will remove all duplicate values. The proper way to do this is using array_map() and strtoupper()/strtolower() thanks cm
I just changed the code a little bit so you havent got a code that repeats itself. <?php function array_change_key_case_secure($array = array(), $case = CASE_UPPER){ $secure = array(); $functionWrap = array(CASE_UPPER => 'strtoupper', CASE_LOWER => 'strtolower'); foreach($array as $key => $val){ if(isset($functionWrap[$key])){ $key = $functionWrap[$case]($key); $secure[$key][] = $val; } else { die('Not a known Type'); } } foreach($secure as $key => $val){ if(count($secure[$key]) == 1){ $secure[$key] = $val[0]; } } return $secure; } $myArray = array('A' => 'Hello', 'B' => 'World', 'a' => 'how are you?'); print_r($myArray); $myArray = array_change_key_case_secure($myArray); print_r($myArray); /* Array ( [A] => Hello [B] => World [a] => how are you? ) Array ( [A] => Array ( [0] => Hello [1] => how are you? ) [B] => World ) */ john
<?php function array_change_value_case($input, $case = CASE_LOWER) { $aRet = array(); if (!is_array($input)) { return $aRet; } foreach ($input as $key => $value) { if (is_array($value)) { $aRet[$key] = array_change_value_case($value, $case); continue; } $aRet[$key] = ($case == CASE_UPPER ? strtoupper($value) : strtolower($value)); } return $aRet; } ?> cdblog
<?php /** * @return array * @author Cocol * @desc change the key case , if found repeat keys, then convert to array * for more detail please visit http://php.clickz.cn/array/array_change_key_case.html */ function array_change_key_case_secure($array = array(),$case = CASE_UPPER) { $secure = array(); if ($case == CASE_UPPER) { foreach ($array as $key=>$val) { $key = strtoupper($key); if (!array_key_exists($key,$secure)) { $secure[$key][] = $val; } else { $secure[$key][] = $val; } } } else if ($case == CASE_LOWER) { foreach ($array as $key=>$val) { $key = strtolower($key); if (!array_key_exists($key,$secure)) { $secure[$key][] = $val; } else { $secure[$key][] = $val; } } } foreach ($secure as $key=>$val) { if (count($secure[$key]) == 1) { $secure[$key] = $val[0]; } } return $secure; } $array = array( 'a' => "john", 'A' => "vary", 'c' => "cocol", ); print_r($array); $array = array_change_key_case_secure($array,CASE_UPPER); print_r($array); ?> output: Array ( [a] => john [A] => vary [c] => cocol ) Array ( [A] => Array ( [0] => john [1] => vary ) [C] => cocol ) |
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