Considering an array of strings:
$array = ('hello', 'hello1', 'hello2');
I need to preg_quote($value,'/'); each of the values.
I want to avoid using foreach. Array walk doesn't work because it passes the key too.
array_walk($array,'preg_quote','/'); //> Errors, third parameter given to preg_quote
Any alternative?
Try array_map() [doc] with an anonymous function (>= 5.3):
$array = array_map(function($value){
return preg_quote($value, '/');
}, $array);
$array = array_map('preg_quote', $array, array('/'));? Edit: never mind, the fact that this worked for me is a fluke of not having a / to escape. The second array is just being ignored.
array_map('preg_quote', $array) and would like to pass third argument as preg_quote() delimiter, you have to have the same amount of 2nd and 3rd parameter on array_map(). Example: array_map('preg_quote', ['/a', '/b', '/c'], ['/', '/', '/']). So, use the code in answer is the best in this case.Use array_map()
$newarray = array_map(function($a) {return preg_quote($a, '/');}, $input_array);
You can do (with PHP 5.3):
array_map(function($elem) { return preg_quote($elem, '/'); }, $array);
In PHP <5.2 there are no annoymous functions (first argument of array map) and in that case you should make a global function.
Use foreach. It's made for that reason. But if you insist:
array_walk($arr, create_function('&$val', '$val = preg_quote($val, "/");'));
The alternative we forgot to mention is:
function user_preg_quote($key, $value) {
return preg_quote($value, '/');
}
array_walk($array, 'user_preg_quote');
But still a simple foreach would be better maybe.
foreach?array_map();php.net/array-map