PHP implementation of digital format, the number of every three comma-plus function function

This article mainly introduces the implementation of the PHP digital format, the number of every three comma-based function function, interested in the reference of friends, hope to help you.

The specific code is as follows:

function Num_format ($num) {  if (!is_numeric ($num)) {   return false;  }  $num = Explode ('. ', $num);//separates integers from decimals  $rl = $num [1];//fractional value  $j = strlen ($num [0])% 3;//integer number of bits  $SL = substr ($ Num[0], 0, $j);//The number of the preceding three digits is taken out  $SR = substr ($num [0], $j);//The number of full three digits after//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 (', ', $rvalue);//Decompose the array  if ($ rvalue[0]==0) {   array_shift ($rvalue);//If the first element is 0, delete the first element  }  $rv = $rvalue [0];//front less than three digits for  ($i = 1; $i < count ($rvalue); $i + +) {   $rv = $rv. ', '. $rvalue [$i];  }  if (!empty ($RL)) {   $rvalue = $rv. '. '. $RL;//decimal is not empty, integer and decimal merge  }else{   $rvalue = $RV;//Decimal is empty, only integer  }  return $rvalue;}

You can also use the system's own function string Number_format (float number [, int decimals [, String Dec_point, String thousands_sep]):

Example:

echo Number_format (' 169856420 ');

the output will be:169,856,420

echo Number_format (' 1000000 ', 2);

the output will be:1,000,000.00

echo Number_format (' 1000000 ', 2, ', ', '. ');

the output will be:1.000.000,00

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