Php: Concatenate string into all array items

Alternative example using array_map: http://php.net/manual/en/function.array-map.php

PHP:

$colors = array('red','green','blue');

$result = array_map(function($color) {
    return "color-$color";
}, $colors);

Output ($result):

array(
    'color-red',
    'color-green',
    'color-blue'
)

The method array_walk will let you 'visit' each item in the array with a callback. With php 5.3 you can even use anonymous functions

Pre PHP 5.3 version:

function carPrefix(&$value,$key) {
  $value="car-$value";
}
array_walk($colors,"carPrefix");
print_r($colors);

Newer anonymous function version:

array_walk($colors, function (&$value, $key) {
   $value="car-$value";
});
print_r($colors);

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