Finding a Given Value in an Array in PHP

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Q

How To Find a Specific Value in an Array in PHP?

✍: FYIcenter.com

A

There are two functions can be used to test if a value is defined in an array or not:

array_search($value, $array) - Returns the first key of the matching value in the array, if found. Otherwise, it returns false.
in_array($value, $array) - Returns true if the $value is defined in $array.

Here is a PHP script on how to use array_search():

<?php 
$array = array("Perl", "PHP", "Java", "PHP");
print("Search 1: ".array_search("PHP",$array)."\n");
print("Search 2: ".array_search("Perl",$array)."\n");
print("Search 3: ".array_search("C#",$array)."\n");
print("\n");
?>

This script will print:

Search 1: 1
Search 2: 0
Search 3:

⇒ Retrieving All Keys from an Array in PHP

⇐ Verifying If a Key Exists in an Array in PHP

⇑ PHP Built-in Functions for Arrays

⇑⇑ PHP Tutorials

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PHP Built-in Functions for Arrays
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How To Get the Total Number of Values in an Array in PHP? You can get the total number of values in an array by using the count() function. Here is a PHP example script: <?php $array = array("PHP", "Perl", "Java"); print_r("Size 1: ".count($array)."\n"); $array = array(); print_r("Size 2: ".c... 2017-01-29, ∼2698🔥, 0💬

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Finding a Given Value in an Array in PHP
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Retrieving All Keys from an Array in PHP
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