What are some recommended resources for learning about regular expressions in PHP?

Regular expressions are powerful tools for pattern matching and manipulating strings in PHP. To learn about regular expressions in PHP, some recommended resources include the official PHP documentation on regular expressions, online tutorials on websites like W3Schools or TutorialsPoint, and books such as "Mastering Regular Expressions" by Jeffrey Friedl. These resources can help you understand the syntax, functions, and best practices for using regular expressions in PHP. 

// Example code using regular expressions in PHP
$pattern = '/\b(\w+)\s+\1\b/i';
$string = 'Hello hello World world';
if (preg_match($pattern, $string)) {
    echo 'Match found!';
} else {
    echo 'No match found.';
}

Keywords

Regular expressions PHP resources learning libraries

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