The PHP array_walk() function runs each array element in a user-defined function with the array’s keys and values as parameters in the function.
<?php
function my_function($value, $key, $param) {
echo $key . $param . $value;
echo '<br>';
}
$a = array('Car 1' => 'Lamborghini', 'Car 2' => 'Ferrari', 'Car 3' => 'Maserati');
array_walk($a, 'my_function', '- has the value ');
?>
Output
Car 1 - has the value Lamborghini
Car 2 - has the value Ferrari
Car 3 - has the value Maserati
Syntax
array_walk(array, my_function, parameter, ...)
Parameters
| Parameter | Description |
|---|---|
| array | Specifies an array (required) |
| my_function | The name of the user-defined function (required) |
| parameter, ... | Specifies a parameter or numerous parameters to the user-defined function |
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.
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PHP NOTES:
- When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
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