PHP join() Function

The join() function is built-in function in PHP and is used to join an array of elements which are separated by a string. Syntax

string join( $separator, $array)

Parameter: The join() function accepts two parameters out of which one is optional and one is mandatory.

$separator : This is an optional parameter and is of string type. The values of the array will be join to form a string and will be separated by the $separator parameter provided here. This is optional, if not provided the default is “” (i.e. an empty string)
$array : The array whose value is to be joined to form a string.

Return Type: The return type of join() function is string. It will return the joined string formed from the elements of $array. Examples:

Input : join(array('Beginner','for','Beginner')
Output : w3wiki

Input : join("-",array('Beginner','for','Beginner')
Output : Beginner-for-Beginner

Below program illustrates the working of join() function in PHP:

PHP

<?php 
    // PHP Code to implement join function 
      
    $InputArray = array('Beginner','for','Beginner'); 
      
    // Join without separator 
    print_r(join($InputArray)); 
      
    print_r("\n"); 
      
    // Join with separator 
    print_r(join("-",$InputArray)); 
?> 

Output:

w3wiki
Beginner-for-Beginner

Tags:

#Functions #PHP-string #Web Technologies #Functions

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