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PHP high concurrent access to write files

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Release： 2016-07-25 08:46:08
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  1. function write ( $data )
  2. {
  3. $return = false;
  4. if ( $handle = @fopen ( 'error.txt','a+' ) )
  5. {
  6. $i=0;
  7. while ( !flock ( $handle,2 ) && $i++ < 3 )
  8. {
  9. usleep ( 500000 );
  10. }
  12. if ( $i < 3 && fwrite ( $handle,$data . "rn" ) )
  13. {
  14. flock ( $handle,3 );
  15. $return = true;
  16. }
  18. fclose ( $handle );
  19. }
  20. return $return;
  21. }
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