Object function

PHP Array Function Manual

PHP array_reduce() function usage and example

The PHP array_reduce() function uses a callback function to iteratively reduce an array to a single value

Syntax

array_reduce ( $array, callback $function [, int $initial] );

Definition and usage

The array_reduce() function iteratively applies the callback function callback to each element of the array array, thereby reducing the array to a single value.

It specifies the initial value to be sent to the function.

Return value

It returns the array result value.

Example
　　　<?php1function call_back_function($v2, $v
　　　　　　) {1　return $v-. ";2" . $v
　　　;
　　　}
　　　
　　　$input = array("a"=>"banana","b"=>"apple","c"=>"orange");
　　　print_r(array_reduce($input, call_back_function));　/print_r("<br);");
　　　print_r(array_reduce($input, call_back_function, "");　10));
?>

Output result:

-banana-apple-orange
10-banana-apple-orange

　PHP Array Function Manual