What potential pitfalls can arise when using strpos() function in PHP for string manipulation?

One potential pitfall when using the strpos() function in PHP for string manipulation is that it returns false if the substring is not found in the string, which can lead to unexpected behavior if not handled properly. To avoid this issue, you should always check the return value of strpos() against false using the strict comparison operator (===) to ensure that you are accurately detecting the position of the substring. 

$string = "Hello, World!";
$substring = "World";

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

if ($pos !== false) {
    // Substring found, do something with the position
    echo "The substring '$substring' was found at position $pos.";
} else {
    // Substring not found
    echo "The substring '$substring' was not found in the string.";
}

Keywords

strpos PHP string manipulation error handling edge cases

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