PHP string join() Function

Last Updated : 17 Mar 2025

PHP string join() is predefined function. It is used to return a string from the elements of an array. It is an alias of the implode() function.

Syntax:

Parameter	Description	Required/Optional
separator	Specify the array element	optional
array	The array to join to a string	required

Example 1

<?php
$arr = array('Hello','PHP','Join','Function');
echo join(" ",$arr)."<br>";
?>

Output:

Hello PHP Join Function

Example 2

<?php
$arr = array('Hello','PHP','Join','Function');
echo join("+",$arr)."<br>";
?>

Output:

Hello+PHP+Join+Function

Example 3

<?php
$arr = array('Hello','PHP','Join','Function');
echo join("-",$arr)."<br>";
?>

Output:

Hello-PHP-Join-Function

Example 4

<?php
$arr = array('1', '2', '3', '4', '5', '6', '7', '8', '9', '10');
echo join('<br>', $arr);
?>

Output:

Next TopicPHP String

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