Analysis of the usage of ob_flush function and flush function in php

This article analyzes the usage of ob_flush function and flush function in PHP. Share it for your reference. The details are as follows:

ob_flush() function: Take out the data in PHP buffering and put it into server buffering

flush() function: Take out the server buffering data and put it in browser buffering

For example code:

<?php 
  echo str_repeat('m0sh1' ,1000);   
  for($i=0;$i<4;$i++) { 
    echo $i.'<br />'; 
    ob_flush(); 
    flush(); 
    sleep(1); 
  } 
?> 
<?php 
//header("content-type:text/html;charset='utf-8'"); 
//Cannot modify header information - headers already sent by?>

Execution Discovery

The output result of this code is output line by line.

Note: The order of using both is. First ob_flush, then flush

I hope this article will be helpful to everyone's PHP programming.