What are best practices for using regular expressions in PHP?

When using regular expressions in PHP, it is important to follow best practices to ensure efficient and effective pattern matching. Some best practices include using delimiters to clearly define the start and end of the regex pattern, escaping special characters when necessary, and using the appropriate regex functions provided by PHP. 

// Example of using regular expressions in PHP
$string = "Hello, World!";
$pattern = '/Hello/';
if (preg_match($pattern, $string)) {
    echo "Pattern found in the string.";
} else {
    echo "Pattern not found in the string.";
}

Keywords

Regular expressions PHP preg_match preg_replace pattern matching

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