PHP implementation of RMB digital format, every three bits plus commas

function Num_format ($num) { if (!is_numeric ($num)) { return false; } $rvalue = "; $num = Explode ('. ', $num);//separate integers and decimals $RL =!isset ($num [' 1 '])? ": $num [' 1 '];//value of the decimal part $j = strlen ($num [0])% 3;//integer number of bits $SL = substr ($num [0], 0, $j);//The number of the front less than three bits is taken out $SR = substr ($num [0], $j);//The number of full three digits after it is taken out $i = 0; while ($i <= strlen ($SR)) { $rvalue = $rvalue. ', '. substr ($SR, $i, 3);//three-bit three-bit remove and merge, separated by commas $i = $i + 3; } $rvalue = $sl. $rvalue; $rvalue = substr ($rvalue, 0,strlen ($rvalue)-1);//Remove the last comma $rvalue = Explode (', ', $rvalue);//decomposition of the array if ($rvalue [0]==0) { Array_shift ($rvalue);//If the first element is 0, delete the first element } $RV = $rvalue [0];//in front of three digits for ($i = 1; $i < count ($rvalue); $i + +) { $RV = $rv. ', '. $rvalue [$i]; } if (!empty ($RL)) { $rvalue = $rv. '. '. $RL;//decimals are not empty, integers and decimals are merged }else{ $rvalue = $RV;//Decimal is empty, only integer } return $rvalue; } Copy Code

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