I have some questions about mysql databases and php.

For some minor questions about the mysql database and php, please advise me that there are 20 pieces of data in the mysql database. However, only 16 pieces of data are displayed on my php webpage, I want to ask, why ?, The post code is king. PHPcodefor ($ I = 1; $ I & lt; = 4; $ I ++) {you have some minor questions about mysql databases and php.
My mysql database contains 20 pieces of data, but only 16 pieces of data are displayed on my php webpage. why?

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Sticking code is king

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PHP code

For ($ I = 1; $ I <= 4; $ I ++ ){...... If ($ I <4) // add this row $ row = mysql_fetch_array ($ result );}
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There is no need to capture data inside the loop.