---
date: 2017-07-29T18:56:36+01:00
description: "Function bash array_key_exists(), equivalent to PHP"
draft: false
include_toc: true
show_comments: false
tags: ["Bash", "array"]
title: "Bash: function array_key_exists()"
translationKey: "bash-array-key-exists"
---

## Description

`array_key_exists()`: check if key exists into array!

*Equivalent to the PHP Function [PHP array_key_exists](http://php.net/manual/en/function.array-key-exists.php)()*

## Source Code

{{< code "dev-bash-array-key-exists-src" bash >}}

### Parameters

* `key` is the searched key
* `haystack` is the array where to search

### Return Values

* Returns `0` if the `key` found into `haystack`; considere this value as `TRUE`
* Otherwise, returns `1`: considere this value as `FALSE`

## Example

{{< code "dev-bash-array-key-exists-example" bash >}}

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