What potential pitfalls should be considered when using explode() and strpos() functions in PHP for string manipulation?

One potential pitfall when using explode() and strpos() functions in PHP for string manipulation is that they may return unexpected results or errors if the input string does not match the expected format. To mitigate this issue, it is important to always check the return values of these functions before using them further in your code. This can help prevent errors and ensure that your string manipulation logic behaves as expected. 

// Example code snippet demonstrating how to check return values of explode() and strpos() functions

$input_string = "Hello, world!";
$delimiter = ",";
$position = strpos($input_string, $delimiter);

if ($position !== false) {
    $parts = explode($delimiter, $input_string);
    
    // Use the $parts array for further string manipulation logic
    print_r($parts);
} else {
    // Handle the case where the delimiter is not found in the input string
    echo "Delimiter not found in input string.";
}

Keywords

explode strpos string manipulation PHP pitfalls

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