search and replace value in PHP array

Question

I was looking for some standard PHP function to replace some value of an array with other, but surprisingly I haven\'t found any, so I have to write my own:

Answer 1

If performance is an issue, one may consider not to create multiple functions within array_map(). Note that isset() is extremely fast, and this solutions does not call any other functions at all.

$replacements = array(
    'search1' => 'replace1',
    'search2' => 'replace2',
    'search3' => 'replace3'
);
foreach ($a as $key => $value) {
    if (isset($replacements[$value])) {
        $a[$key] = $replacements[$value];
    }
}