w3resource

PHP: join() function

Description

The join() function is used to join array elements with a string. The join() function is similar to implode() function.

Version:

(PHP 4 and above)

Syntax:

 join (string_join, array_name)

Parameters:

Name Description Required /
Optional		 Type
string_join String-join is work as a connector between the array elements. The default value is a empty string (" "). Optional String
array_name The array who's elements will be joined. Required Array

Return values:

A string representation of all the array elements in the same order, with the string_join string between each array element.

Value Type: String.

Pictorial Presentation

php-string-join()

Example: 

<?php
 $array_name=array('1','2','3','4','....');
 $join_string=join(",", $array_name);
 echo $join_string;
 echo '<br>';
 $array_name=array('A','B','C','D','E');
 $join_string=join("-", $array_name);
 echo $join_string;
 ?>

Output:

1,2,3,4,....
A-B-C-D-E

View the example in the browser

See also

PHP Function Reference

Previous: implode
Next: ltrim



PHP: Tips of the Day

PHP: Pass a PHP string to a JavaScript variable (and escape newlines)

<script>
  var myvar = <?php echo json_encode($myVarValue); ?>;
</script>

Using json_encode() requires:

  • PHP 5.2.0 or greater
  • $myVarValue encoded as UTF-8 (or US-ASCII, of course)

Since UTF-8 supports full Unicode, it should be safe to convert on the fly.

Note that because json_encode escapes forward slashes, even a string that contains </script> will be escaped safely for printing with a script block.

Ref : https://bit.ly/34f0Dym