PHP Reference

Quick Reference

The PHP array_reduce() function sends the values in an array to a user-defined function, and returns a string. If the array is empty and initial is not passed, this function returns NULL.

<?php
function my_function($z1, $z2) {
    return $z1 . '<br>' . $z2;
}

$a = array('Lamborghini', 'Ferrari', 'Maserati');
print_r(array_reduce($a, 'my_function'));
?>

Note

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.

Output

Lamborghini
Ferrari
Maserati

Syntax

array_reduce(array, my_function, initial)

Parameters

ParameterDescription
arraySpecifies an array (required)
my_functionSpecifies the name of the function (required)
initialSpecifies the initial value to send to the function

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

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.