php number formatting sample code

Many times we need to format numbers, such as adding 0 in front of insufficient digits. It can be easily implemented with PHP, because PHP comes with functions for related functions. The

number_format() function formats a number by thousands grouping.

For example, echo number_format(285266237);

can output 285,266,237

In addition, if you need to format the file byte size , the following method can be used for reference:

 function byte_format($input, $dec=0)   
 {    
  $prefix_arr = array(' B', 'K', 'M', 'G', 'T');   
  $value = round($input, $dec);   
  $i=0;   
  while ($value>1024)   
  {    
   $value /= 1024;   
   $i++;   
  }   
  $return_str = round($value, $dec).$prefix_arr[$i];   
  return $return_str;   
 }   

 echo byte_format(285266237);

The display result is 272M

For example, echo number_format(285266237);
Can output 285,266,237
In addition, if you need to format the file Byte size, the following method can be used for reference:

 function byte_format($input, $dec=0)   
 {    
  $prefix_arr = array(' B', 'K', 'M', 'G', 'T');   
  $value = round($input, $dec);   
  $i=0;   
  while ($value>1024)   
  {    
   $value /= 1024;   
   $i++;   
  }   
  $return_str = round($value, $dec).$prefix_arr[$i];   
  return $return_str;   
 }   

 echo byte_format

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