Answer / samarth sinha

in_array : -Checks if a value exists in an array
array_search() :-searches an array for a given value and returns the corresponding key if successful.

in_array Syntax:
in_array(search value, array , strict Boolean);
search value:- will be the value to search in an array
array: will the array to search
strict Boolean: is optional.

Example:

<?php
$name = array("Samarth", "Sinha", "PHP", "Windows");
if (in_array("Samarth", $name))
{
echo "Yes";
}
else
{
echo "False";
}
?>

Output: Yes

array_search() :-searches an array for a given value and returns the corresponding key if successful.

Syntax:
array_search()(search value, array , strict Boolean);
search value:- will be the value to search in an array
array: will the array to search
strict Boolean: is optional.

Example:

<?php
$name = array(0=>"Samarth", 1=>"Sinha", 2=>"PHP", 3=>"Windows");
echo $key = array_search("Samarth", $name);

?>
Output: 0

Answer / developer diary

Similar kind a article and answer you can find here
https://www.developerdiary.in/php/difference-between-in_array-and-array_search-in-php/

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