replace array keys with given respective keys

Question

I have an array like below

$old = array(
       \'a\' => \'blah\',
       \'b\' => \'key\',
       \'c\' => \'amazing\',
       \'d\' => array(
          


        

Answer 1

This question is old but since it comes up first on Google I thought I'd add solution.

// Subject
$old = array('foo' => 1, 'baz' => 2, 'bar' => 3));

// Translations    
$tr  = array('foo'=>'FOO', 'bar'=>'BAR');

// Get result
$new = array_combine(preg_replace(array_map(function($s){return "/^$s$/";}, 
           array_keys($tr)),$tr, array_keys($old)), $old);

// Output
print_r($new);

Result:

    
    Array
    (
       [FOO] => 1
       [baz] => 2
       [BAR] => 3
    )