<?php
$array = array(0 => 'blue', 1 => 'red', 2 => 'green', 3 => 'red');
echo "Using array_search() function: <br>";
$key = array_search('green', $array); // $key = 2;
echo "Value green is at the location : ". $key."<br>";
echo "------------------------------------<br>";
echo "Using in_array() function: <br>";
$a = array('1.10', 12.4, 1.13);

if (in_array('12.4', $a, true)) {
    echo "'12.4' found with strict check\n";
}

if (in_array(1.13, $a, true)) {
    echo "1.13 found with strict check\n";
}
echo "------------------------------------<br>";

?>