How can the ungreedy modifier in regular expressions affect the matching behavior in PHP?

The ungreedy modifier in regular expressions changes the matching behavior from greedy (matching as much as possible) to ungreedy (matching as little as possible). This can be useful when you want to match the smallest possible substring that satisfies the pattern. To use the ungreedy modifier in PHP, you can add a question mark (?) after the quantifier in the regular expression pattern. Example: 

$string = "Hello, World! This is a test.";
$pattern = '/H.*?s/';
preg_match($pattern, $string, $matches);
echo $matches[0]; // Output: "Hello, World! This"

Keywords

ungreedy modifier regular expressions matching behavior PHP functions

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