What are the potential pitfalls of using the strpos function in PHP?

The potential pitfalls of using the strpos function in PHP include the fact that it returns false if the substring is not found in the string, which can lead to unexpected behavior if not properly handled. To mitigate this issue, it is recommended to use the strict comparison operator (===) to check for the exact position of the substring within the string. 

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

if(strpos($string, $substring) !== false){
    echo "Substring found at position: " . strpos($string, $substring);
} else {
    echo "Substring not found";
}

Keywords

strpos PHP string manipulation error handling edge cases

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