在手机safari上传图片时,竖着的照片会变成横着的照片,以下程序片段利用图片exif信息把图片旋转回去,代码抄自php.net官网。
http://php.net/manual/zh/function.exif-read-data.php
<?<span style="color: #000000;">php </span><span style="color: #800080;">$image</span> = imagecreatefromstring(<span style="color: #008080;">file_get_contents</span>(<span style="color: #800080;">$_FILES</span>['image_upload']['tmp_name'<span style="color: #000000;">])); </span><span style="color: #800080;">$exif</span> = exif_read_data(<span style="color: #800080;">$_FILES</span>['image_upload']['tmp_name'<span style="color: #000000;">]); </span><span style="color: #0000ff;">if</span>(!<span style="color: #0000ff;">empty</span>(<span style="color: #800080;">$exif</span>['Orientation'<span style="color: #000000;">])) { </span><span style="color: #0000ff;">switch</span>(<span style="color: #800080;">$exif</span>['Orientation'<span style="color: #000000;">]) { </span><span style="color: #0000ff;">case</span> 8: <span style="color: #800080;">$image</span> = imagerotate(<span style="color: #800080;">$image</span>,90,0<span style="color: #000000;">); </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 3: <span style="color: #800080;">$image</span> = imagerotate(<span style="color: #800080;">$image</span>,180,0<span style="color: #000000;">); </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; </span><span style="color: #0000ff;">case</span> 6: <span style="color: #800080;">$image</span> = imagerotate(<span style="color: #800080;">$image</span>,-90,0<span style="color: #000000;">); </span><span style="color: #0000ff;">break</span><span style="color: #000000;">; } } </span><span style="color: #008000;">//以下代码自行处理即可</span> ?>
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