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下面的代码演示了php中如何获取用户上传的文件,并限制文件类型的一般图片文件,最后保存到服务器
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | <?php $allowedExts = array ( "gif" , "jpeg" , "jpg" , "png" ); $extension = end ( explode ( "." , $_FILES [ "file" ][ "name" ])); if ((( $_FILES [ "file" ][ "type" ] == "image/gif" ) || ( $_FILES [ "file" ][ "type" ] == "image/jpeg" ) || ( $_FILES [ "file" ][ "type" ] == "image/jpg" ) || ( $_FILES [ "file" ][ "type" ] == "image/pjpeg" ) || ( $_FILES [ "file" ][ "type" ] == "image/x-png" ) || ( $_FILES [ "file" ][ "type" ] == "image/png" )) && ( $_FILES [ "file" ][ "size" ] < 20000) && in_array( $extension , $allowedExts )) { if ( $_FILES [ "file" ][ "error" ] > 0) { echo "Return Code: " . $_FILES [ "file" ][ "error" ] . "<br>" ; } else { echo "Upload: " . $_FILES [ "file" ][ "name" ] . "<br>" ; echo "Type: " . $_FILES [ "file" ][ "type" ] . "<br>" ; echo "Size: " . ( $_FILES [ "file" ][ "size" ] / 1024) . " kB<br>" ; echo "Temp file: " . $_FILES [ "file" ][ "tmp_name" ] . "<br>" ; if ( file_exists ( "upload/" . $_FILES [ "file" ][ "name" ])) { echo $_FILES [ "file" ][ "name" ] . " already exists. " ; } else { move_uploaded_file( $_FILES [ "file" ][ "tmp_name" ], "upload/" . $_FILES [ "file" ][ "name" ]); echo "Stored in: " . "upload/" . $_FILES [ "file" ][ "name" ]; } } } else { echo "Invalid file" ; } ?> |