php里array_work用法实例分析

// the test array 
$array = array(
  php, arrays, are, cool  
);
// some variable for testing:
$some_var = NEW;
// the function that gets called for each entry
function format_array_values(&$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/>
)
*/