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Digg array_change_key_case
Changes all keys in an array
(PHP 4 >= 4.2.0, PHP 5)
Returns an array with all keys from input lowercased or uppercased. Numbered indices are left as is. Return ValuesReturns an array with its keys lower or uppercased, or false if input is not an array. ExamplesExample 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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array_change_key_case array_chunk array_combine array_count_values array_diff_assoc array_diff_key array_diff_uassoc array_diff_ukey array_diff array_fill_keys array_fill array_filter array_flip array_intersect_assoc array_intersect_key array_intersect_uassoc array_intersect_ukey array_intersect array_key_exists array_keys array_map array_merge_recursive array_merge array_multisort array_pad array_pop array_product array_push array_rand array_reduce array_reverse array_search array_shift array_slice array_splice array_sum array_udiff_assoc array_udiff_uassoc array_udiff array_uintersect_assoc array_uintersect_uassoc array_uintersect array_unique array_unshift array_values array_walk_recursive array_walk array arsort asort compact count current each end extract in_array key krsort ksort list natcasesort natsort next pos prev range reset rsort shuffle sizeof sort uasort uksort usort |
