Solution to blank lines appearing in http://www.kaqima.com/index.ht php template

It was solved locally, but there were still blank lines when uploading to the server. After working on it all morning, it almost crashed. Finally, I decided to find a way to solve it myself. After several hours of exploration, I finally found a perfect solution.
Using the PHP display buffer display principle, successfully removed
Add a line of ob_start() at the top of PHP; then add ob_end_clean() before the template is displayed; add ob_end_flush() after the template is displayed;
This problem is solved , now give the overall structure example code:

Copy code The code is as follows:

ob_start(); //This is the php logical operation
ob_end_clean(); //This is PHP template display
ob_end_flush();
?>

Additions from other netizens:
A problem that has never been solved during development, favorite
　The page uses UTF8 encoding, and the header and tail use the method of template inclusion files. As a result, there is an extra blank line of about 10px at the head and the tail for no reason, and there is nothing.
　The reason is that they are all encoded in utf8. When including files, the final binary stream contains multiple UTF8 BOM tags. IE cannot parse pages containing multiple UTF8 BOM tags normally and directly replaces them with the actual displayed carriage return, which causes A blank line, but firefox doesn't have this problem.
　So if the template uses the inclusion method to contain multiple utf8 files and needs to be saved with ultraedit, just select utf8 and save it in no BOM format.
　In addition, if the Chinese page puts the title tag in front of in the html head tag, the page will be blank.
　So utf8 The page should use the standard order

Copy the code The code is as follows: