zend_thread_id
  Returns a unique identifier for the current thread
  
 
 
  Description
  
   int zend_thread_id
    ( void
   )
  
  
 
  Return Values
  
   Returns the thread id as an integer.
  
  
 
  Examples
  
   
    Example #1 zend_thread_id example
    
<?php
$thread_id = zend_thread_id();
echo 'Current thread id is: ' . $thread_id;
?>
     
    The above example will output
something similar to:
Current thread id is: 7864
 
    
  
  
 
  Notes
  Note: 
   
    This function is only available if PHP has been built with ZTS (Zend
    Thread Safety) support and debug mode (--enable-debug).