来自PHP脚本的mod_expires和图像

Question

I have a php script which returns images with a specific id.

getImage.php?id=12

I configured some mod_expires preferences. In example.

ExpiresByType image/gif "access plus 1 minute"
ExpiresByType image/jpeg "access plus 1 minute"
ExpiresByType image/jpg "access plus 1 minute"
ExpiresByType image/png "access plus 1 minute"

When i look in my chrome developer tools it works on static images but not on the images requested over my php script.

Am i doing anything wrong or what is the problem?

Thanks for helping

Answer 1

You need to set right MIME type and Cache-Control headers inside your getImage.php.

header('Content-type: image/jpeg');
header('Cache-Control: max-age=60');