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<?php function toFraction($number){ $numerator = 1; $denominator = 0; for(; $numerator < 1000; $numerator++){ $temp = $numerator / $number; if(ceil($temp) - $temp == 0){ $denominator = $temp; break; } } return ($denominator > 0) ? $numerator . '/' . $denominator : false; } echo toFraction( -0.5);
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