php里array_work用法实例分析

// the test array 
$array = array(
  'php', 'arrays', 'are', 'cool'  
);
// some variable for testing:
$some_var = 'new';
// the function that get's called for each entry
function format_array_values(&$item, $key, $some_var) {
  $item = $some_var . ": $item (key: $key)<br/>";
}
// "walk" trough each array item and call the function:
// "format_array_values"
array_walk($array, 'format_array_values', $some_var);
// print the result:
print_r($array);
/*
the output will be:
array
(
  [0] => new: php (key: 0)<br/>
  [1] => new: arrays (key: 1)<br/>
  [2] => new: are (key: 2)<br/>
  [3] => new: cool (key: 3)<br/>
)
*/