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<?php $throwableName = 'Hello\World\Class\ClassName'; $classNameArr = explode('\\', $throwableName); $className = implode('\\', array_map(function($item){ return $item[0]; }, array_slice($classNameArr, 0, -1))).$classNameArr[count($classNameArr) - 1]; var_dump($className);
Output for 7.0.0 - 7.0.25, 7.1.0 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
string(14) "H\W\CClassName"

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