Usage of ob_flush() function and flush() function in php

This article mainly introduces the ob_flush function and flush function usage in php. It analyzes the functions of ob_flush function and flush function and related usage skills with examples. It has certain reference. Value, friends in need can refer to

This article analyzes the usage of ob_flush function and flush function in PHP with examples. Share it with everyone 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 data in Server buffering , put into browser buffering

For example code:

<?php 
  echo str_repeat(&#39;m0sh1&#39; ,1000);   
  for($i=0;$i<4;$i++) { 
    echo $i.&#39;<br />&#39;; 
    ob_flush(); 
    flush(); 
    sleep(1); 
  } 
?> 
<?php 
//header("content-type:text/html;charset=&#39;utf-8&#39;"); 
//提示错误Cannot modify header information - headers already sent by 
?>

Execution discovery

The output result of the code here is output line by line,

Note: The correct order to use the two is. ob_flush first, then flush

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