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run code in 150+ php & hhvm versions
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<?php function preg_array_key_exists($pattern, $array) { $keys = array_keys($array); return (int) preg_grep($pattern,$keys); } //Пример: $arr = array( "DirName" => "Ivan Ivanovich", "DirPhone" => '(843) 123-45-67', "ContactName" => 'Dmitriy Nikolaevich'); $pattern = '/^Dir/'; var_dump(preg_array_key_exists($pattern, $arr));
Output for 4.3.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(1)