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<?php function castNumber($n) { if(!is_numeric($n)) return 0; return (is_float($n)) ? (float) $n : (int) $n; } var_dump($casted = castNumber('8'));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(8)