PHP cannot extract the value of submit after replacing the submit button with an image_PHP Tutorial

There are two questions here:

1. Image buttons are different from ordinary buttons and require js to simulate the submission operation.

2. When obtaining the button operation in php, the normal isset($_POST[object name]) cannot be used. After printing_r($_POST), it is found that:

Array ( [btn_reg_x] => 81 [btn_reg_y] => 27 )

After reviewing the information, it was found:

$_POST[thisname_x] --The X position of the picture when the mouse is clicked
$_POST[thisname_y] --The Y position of the picture when the mouse is clicked

Therefore, modify the original client submission code to:

php code changed to:

if(isset($_POST[btn_reg_x])) // or (isset($_POST[btn_reg_y]))
{
echo ok!Thats right.;
}

http://www.bkjia.com/PHPjc/478758.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/478758.htmlTechArticleThere are two problems here: 1. Image buttons are different from ordinary buttons and need to use js to simulate the submission operation. 2. When obtaining button operations in php, the normal isset($_POST[object name]) cannot be used...