PHP join() Function
Instance
Combine array elements into a string:
<?php
$arr = array('Hello', 'World!', 'I', 'love', 'Shanghai!');
echo join(" ", $arr);
?>
Definition and Usage
The join() function returns a string composed of array elements.
The join() function is implode() function alias.
Note:The join() function accepts two parameter orders. However, due to historical reasons, explode() is not possible, you must ensure that separator The parameter in string before the parameter.
Note:The join() function's separator The parameter is optional. However, for backward compatibility, it is recommended that you use two parameters.
Syntax
join(separator,array)
| Parameter | Description |
|---|---|
| separator | Optional. Specifies the content placed between array elements. The default is "" (empty string). |
| array | Required. The array to be combined into a string. |
Technical Details
| Return Value: | Returns a string composed of array elements. |
| PHP Version: | 4+ |
| Update Log: | In PHP 4.3.0,separator The parameter becomes optional. |
More Examples
Example 1
Use different characters to separate array elements:
<?php
$arr = array('Hello', 'World!', 'I', 'love', 'Shanghai!');
echo join(" ", $arr) . "<br>";
echo join("+", $arr) . "<br>";
echo join("-", $arr) . "<br>";
echo join("X", $arr);
?>
