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  1. <?php
  2.  
  3. $p=0;
  4. $i  = 0;
  5. $a  = 1;
  6.  
  7. while($i!=10000){
  8.         $p=$p+(1/$a);
  9.         $a=$a+2;
  10.         $p=$p-(1/$a);
  11.         $a=$a+2;
  12.         $i++;
  13.     }
  14.     echo sprintf("%.64f\n",$p*4);
  15.     echo sprintf("%.8f\n",$p*4);
  16.     echo sprintf("%.6f\n",$p*4);
  17.  
Success #stdin #stdout #stderr 0.02s 52432KB
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stdin
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Standard input is empty
stdout
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3.14154265358982476286087148764636367559432983398437500
3.14154265
3.141543
stderr
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PHP Notice:  sprintf(): Requested precision of 64 digits was truncated to PHP maximum of 53 digits in /home/2wgqxT/prog.php on line 14
https://ideone.com/8U8umk
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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