Shulou(Shulou.com)06/02 Report--

This article mainly explains how PHP deals with the problem that pictures uploaded by IOS mobile cameras are rotated 90 degrees counterclockwise. Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how PHP handles the problem that pictures uploaded by IOS mobile cameras are rotated 90 degrees counterclockwise.

When the photos uploaded by the IOS camera are taken, the vertical screen will be rotated 90 degrees counterclockwise because of the characteristics of the photos, so the back end can do some special processing here.

The function used is exif_read_data, which needs to enable the php_exif extension

Orientation is the positioning feature of the picture. The direction corresponding to the specific value is not detailed, but the solution is posted directly.

$image = imagecreatefromstring (file_get_contents ($_ FILES ['image_upload'] [' tmp_name']))

$exif = exif_read_data ($_ FILES ['image_upload'] [' tmp_name'])

If (! empty ($exif ['Orientation'])) {

Switch ($exif ['Orientation']) {

Case 8:

$image = imagerotate ($image,90,0)

Break

Case 3:

$image = imagerotate ($image,180,0)

Break

Case 6:

$image = imagerotate ($image,-90,0)

Break

}

}

At this point, I believe you have a deeper understanding of "how PHP handles the problem that pictures uploaded by IOS mobile cameras are rotated 90 degrees counterclockwise". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.