What are the potential pitfalls of using the strpos function in PHP to search for specific values within a string?

One potential pitfall of using the strpos function in PHP to search for specific values within a string is that it returns false if the value is found at the beginning of the string (position 0). This can lead to unexpected results if not handled properly. To solve this issue, you can use the strict comparison operator (===) to check for both the position and type of the returned value. 

$string = "Hello, world!";
$search = "Hello";

$pos = strpos($string, $search);

if ($pos !== false) {
    echo "Found '$search' at position $pos";
} else {
    echo "Not found";
}

Keywords

strpos PHP string search values

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