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<?php $func = function ($property) { echo preg_replace_callback( '#(?<start>[a-z]+)(_)(?<ucfirst>[a-z]+)#msU', function ($matches) { return $matches['start'] . ucfirst($matches['ucfirst']); }, $property ); echo PHP_EOL; }; $func('$some_property'); echo PHP_EOL; $func('$this->some_property'); echo PHP_EOL; $func('$this->some_property_multiple_underscore_to_camel');
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
$someProperty $this->someProperty $this->somePropertyMultipleUnderscoreToCamel

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97.32 ms | 1572 KiB | 4 Q