Tác dụng của hàm join()
The join() function join array elements into a single string.
This function is an alias of implode() function.
The following table summarizes the technical details of this function.
| Return Value: | Returns a string created by joining array's values. |
|---|---|
| Changelog: | Passing the separator after the array has been deprecated since PHP 7.4.0 |
| Version: | PHP 4+ |
Syntax
The basic syntax of the join() function is given with:
join(separator, array);
The following example shows the join() function in action.
Example
<?php
// Sample array
$array = array("one", "two", "three", "four", "five");
// Creating comma separated string from array elements
echo join(",", $array);
?>Parameters
The join() function accepts the following parameters.
| Parameter | Description |
|---|---|
| separator | Optional. Specifies the string to be inserted between each element of the array while joining. It is also called glue string. Default is an empty string (""). |
| array | Required. Specifies the array to be joined. |
More Examples
Here're some more examples showing how join() function actually works:
The following example shows how to join array elements using different characters.
Example
<?php
// Sample array
$array = array("one", "two", "three", "four", "five");
// Imploding array with different separators
echo join(", ", $array); // comma plus space
echo join("_", $array); // underscore
echo join("-", $array); // hyphen
echo join(" ", $array); // space
?>