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<?php $utterance = 'This is a brown bear with 7 kids'; $template = 'This is a {color} bear with {kids} kids'; $newPattern = '/'; foreach(preg_split('/(\{.*?\})/', $template, -1, PREG_SPLIT_DELIM_CAPTURE) as $part) { if(preg_match('/^(\{.*\})$/', $part)) { $varName = trim($part, '{}'); $newPattern .= '(?P<'. preg_quote($varName) . '>.+)'; } else { $newPattern .= preg_quote($part); } } $newPattern .= '/'; echo $newPattern; echo "\n"; preg_match($newPattern, $utterance, $variables); var_dump($variables);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.13
/This is a (?P<color>.+) bear with (?P<kids>.+) kids/ array(5) { [0]=> string(32) "This is a brown bear with 7 kids" ["color"]=> string(5) "brown" [1]=> string(5) "brown" ["kids"]=> string(1) "7" [2]=> string(1) "7" }

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