How can the use of preg_match_all in PHP be improved to handle a wider range of characters and patterns effectively?

The use of preg_match_all in PHP can be improved to handle a wider range of characters and patterns effectively by using proper regular expressions that account for the variations in characters and patterns. This can be achieved by using character classes, quantifiers, and anchors to match specific patterns more accurately. 

// Example code snippet to improve preg_match_all usage
$string = "Hello 123 world!";
$pattern = '/\b[a-zA-Z0-9]+\b/';
preg_match_all($pattern, $string, $matches);
print_r($matches[0]);

Keywords

preg_match_all PHP regular expressions character sets pattern matching

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