如何在php中制作一个带有变量的可点击图像到另一个页面？

Question

My question is pretty simple. I tried doing some research into this but I never got it working with images.

I want to have a clickable image so when a user clicks on that image, it carries over some type of variable (ID) to another php page, so I can know which image that user clicked on and give the result.

My current code is this:

    echo '<a href="viewer.php"><img  src=' . $covers->src . 'height="300" width="190" value=' . $test . ' name="view" /></a>';

I tried doing this on my second php page:

$var_value = $_GET['view];
echo $var_value;

but I get undefined error on line 1.

Answer 1

You try to fetch a parameter called view with $_GET. Simply add a parameter to your link called view and then its value.

echo '<a href="viewer.php?view=theValueIWantToBringAlong"><img  src="' . $covers->src . '" height="300" width="190" name="view" /></a>';

In this example, using

echo $_GET['view'];

when at viewer.php will print "theValueIWantToBringAlong".

If your value is is stored in a variable, then do like this:

$myValue = 'theValueIWantToBringAlong';
echo '<a href="viewer.php?view='.$myValue.'"><img  src="' . $covers->src . '" height="300" width="190" name="view" /></a>';