(PHP 4, PHP 5, PHP 7, PHP 8)
ob_end_clean — Clean (erase) the contents of the active output buffer and turn it off
   This function calls the output handler
   (with the PHP_OUTPUT_HANDLER_CLEAN and
   PHP_OUTPUT_HANDLER_FINAL flags),
   discards it's return value,
   discards the contents of the active output buffer
   and turns off the active output buffer.
  
   ob_end_clean() will fail
   without an active output buffer started with the
   PHP_OUTPUT_HANDLER_REMOVABLE flag.
  
   ob_end_clean()
   will discard the contents of the active output buffer
   even if it was started without the
   PHP_OUTPUT_HANDLER_CLEANABLE flag.
  
This function has no parameters.
   If the function fails it generates an E_NOTICE.
  
The following example shows an easy way to get rid of the contents of the active output buffer:
Example #1 ob_end_clean() example
<?php
ob_start();
echo 'Text that won\'t get displayed.';
ob_end_clean();
?>