fenom/docs/en/mods/join.md

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Modifier split
==============
Join array elements with a string.
```
{$string|join:$delimiter = ","}
```
Returns an array of strings, each of which is a substring of `$string` formed by splitting it on boundaries formed by the string `$delimiter`.
```smarty
{var $fruits1 = ["banana", "apple", "pear"]}
{$fruits1|join} output banana, apple, pear
{$fruits1|join:" is not "} output banana is not apple is not pear
```