check data exist in array php code example

Example 1: check if array has value php

$myArr = [38, 18, 10, 7, "15"];

echo in_array(10, $myArr); // TRUE
echo in_array(19, $myArr); // TRUE

// Without strict check
echo in_array("18", $myArr); // TRUE
// With strict check
echo in_array("18", $myArr, true); // FALSE

Example 2: php in array

$colors = array("red", "blue", "green"); 
 
if (in_array("red", $colors)) { 
	echo "found red in array"; 
}

Example 3: check if array value exists in another array php

$result = !empty(array_intersect($people, $criminals));

Example 4: in_array

in_array ( mixed $needle , array $haystack [, bool $strict = FALSE ] ) : bool

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