How can you ensure that the preg_match function returns the desired result in PHP?

To ensure that the preg_match function returns the desired result in PHP, you need to make sure that the regular expression pattern you provide matches the specific string you are trying to search within. Additionally, you should pay attention to any special characters in the pattern that may need to be escaped. Testing the regular expression with sample strings can also help verify that it is working correctly. 

$string = "Hello, World!";
$pattern = "/Hello/";

if (preg_match($pattern, $string)) {
    echo "Match found!";
} else {
    echo "No match found.";
}

Keywords

preg_match PHP regular expression pattern matching validation

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