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<?php $px = '1000px'; function get_cm_by_px($px, $dpi = 300, $precision = 2) { $comma = ','; // if US use '.' return number_format(2.54 * (int)$px / $dpi , $precision, $comma,'') ; } var_dump(get_cm_by_px($px));

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44.11 ms | 402 KiB | 5 Q