How to Use join() Function in PHP 8.1 and 8.2 with Example?

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Hello Friends Today, through this tutorial, I will tell you How to Use `join()` function using PHP, PHP 8, PHP 8.1, PHP 8.2 With Example. In PHP 8.1 and 8.2, the `join()` function remains the same as in earlier versions. It’s an alias for the `implode()` function and is used to join array elements with a string. Here’s how you can use it with examples:


join(separator, array)


1. `separator`: Specifies the string to use for separating the array elements. This parameter is optional. If omitted, the elements will be concatenated without any delimiter.
2. `array`: Specifies the array whose elements will be joined into a string.



// Example 1: Using join() with default separator
$array = array('apple', 'banana', 'orange');
$result = join($array);
echo $result; // Output: applebananaorange

// Example 2: Using join() with a custom separator
$array = array('apple', 'banana', 'orange');
$result = join(', ', $array);
echo $result; // Output: apple, banana, orange

// Example 3: Joining elements of an associative array
$assocArray = array('name' => 'John', 'age' => 30, 'city' => 'New York');
$result = join(', ', $assocArray);
echo $result; // Output: John, 30, New York


In the examples above:

1. In Example 1, `join()` concatenates array elements without any separator.
2. In Example 2, `join()` joins array elements with a comma and space separator.
3. In Example 3, `join()` works with associative arrays. It converts the associative array into a regular indexed array and then joins its elements.

Remember, in PHP 8.1 and 8.2, `join()` and `implode()` are interchangeable, so you can use either function according to your preference.