How can warnings be differentiated from error messages in PHP?

Warnings in PHP are issued when there is a potential issue in the code that could cause problems but does not halt the script's execution. Error messages, on the other hand, indicate a more severe issue that prevents the script from running properly. To differentiate between warnings and error messages in PHP, you can check the return value of a function or use error_reporting() to adjust the level of error reporting. 

// Example of checking for warnings and error messages in PHP
$result = @file_get_contents('example.txt');

if ($result === false) {
    echo "Error occurred: " . error_get_last()['message'];
} else {
    echo "No errors or warnings.";
}

Keywords

PHP warnings error messages error types error handling

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