php移除图片exif信息（图片删除exif信息）

本文目录一览：

1、php图片缩放，对于包含exif信息的数码图片怎么处理？
2、php 怎么修改图片exif信息？或者有没有其他的程序可以修改的？
3、PHP如何读取照片的exif信息实现代码
4、PHP上传图片时，如何exif_read_data获取exif
5、我怎样才能修改图像EXIF数据与PHP
6、php删除图片文件代码

php图片缩放，对于包含exif信息的数码图片怎么处理？

缩放属于php压缩成新图片，当然就去掉exif头信息；

php获取exif使用 exif_read_data

php 怎么修改图片exif信息？或者有没有其他的程序可以修改的？

通过：来修改。

教程看：这里

懒得打开的话就看这里

?php

$image = new Imagick();

$image-newImage(300, 200, “black”);

$image-setImageProperty(‘Exif:Make’, ‘Imagick’);

echo $image-getImageProperty(‘Exif:Make’);

PHP如何读取照片的exif信息实现代码

先来了解什么是图片的Exif信息

Exif是一种图象文件格式，它的数据存储与JPEG格式是完全相同的。

实际上Exif格式就是在JPEG格式头部插入了数码照片的信息，包括拍摄时的光圈、快门、白平衡、ISO、焦距、日期时间等各种和拍摄条件以及相机品牌、型号、色彩编码、拍摄时录制的声音以及全球定位系统（GPS）、缩略图等。简单地说，Exif=JPEG+拍摄参数。

因此，你可以利用任何可以查看JPEG文件的看图软件浏览Exif格式的照片，但并不是所有的图形程序都能处理Exif信息。

具体代码你可以参考下面的

/**

* 获取图象信息的函数

* 一个全面获取图象信息的函数

* @access public

* @param string $img 图片路径

* @return array

function GetImageInfoVal($ImageInfo,$val_arr) {

$InfoVal = “未知”;

foreach($val_arr as $name=$val) {

if ($name==$ImageInfo) {

$InfoVal = $val;

break;

}

return $InfoVal;

}

function GetImageInfo($img) {

$imgtype = array(“”, “GIF”, “JPG”, “PNG”, “SWF”, “PSD”, “BMP”, “TIFF(intel byte order)”, “TIFF(motorola byte order)”, “JPC”, “JP2”, “JPX”, “JB2”, “SWC”, “IFF”, “WBMP”, “XBM”);

$Orientation = array(“”, “top left side”, “top right side”, “bottom right side”, “bottom left side”, “left side top”, “right side top”, “right side bottom”, “left side bottom”);

$ResolutionUnit = array(“”, “”, “英寸”, “厘米”);

$YCbCrPositioning = array(“”, “the center of pixel array”, “the datum point”);

$ExposureProgram = array(“未定义”, “手动”, “标准程序”, “光圈先决”, “快门先决”, “景深先决”, “运动模式”, “肖像模式”, “风景模式”);

$MeteringMode_arr = array(

“0” = “未知”,

“1” = “平均”,

“2” = “中央重点平均测光”,

“3” = “点测”,

“4” = “分区”,

“5” = “评估”,

“6” = “局部”,

“255” = “其他”

);

$Lightsource_arr = array(

“0” = “未知”,

“1” = “日光”,

“2” = “荧光灯”,

“3” = “钨丝灯”,

“10” = “闪光灯”,

“17” = “标准灯光A”,

“18” = “标准灯光B”,

“19” = “标准灯光C”,

“20” = “D55”,

“21” = “D65”,

“22” = “D75”,

“255” = “其他”

);

$Flash_arr = array(

“0” = “flash did not fire”,

“1” = “flash fired”,

“5” = “flash fired but strobe return light not detected”,

“7” = “flash fired and strobe return light detected”,

);

$exif = exif_read_data ($img,”IFD0″);

if ($exif===false) {

$new_img_info = array (“文件信息” = “没有图片EXIF信息”);

}

else

{

$exif = exif_read_data ($img,0,true);

$new_img_info = array (

“文件信息” = “—————————–“,

“文件名” = $exif[FILE][FileName],

“文件类型” = $imgtype[$exif[FILE][FileType]],

“文件格式” = $exif[FILE][MimeType],

“文件大小” = $exif[FILE][FileSize],

“时间戳” = date(“Y-m-d H:i:s”,$exif[FILE][FileDateTime]),

“图像信息” = “—————————–“,

“图片说明” = $exif[IFD0][ImageDescription],

“制造商” = $exif[IFD0][Make],

“型号” = $exif[IFD0][Model],

“方向” = $Orientation[$exif[IFD0][Orientation]],

“水平分辨率” = $exif[IFD0][XResolution].$ResolutionUnit[$exif[IFD0][ResolutionUnit]],

“垂直分辨率” = $exif[IFD0][YResolution].$ResolutionUnit[$exif[IFD0][ResolutionUnit]],

“创建软件” = $exif[IFD0][Software],

“修改时间” = $exif[IFD0][DateTime],

“作者” = $exif[IFD0][Artist],

“YCbCr位置控制” = $YCbCrPositioning[$exif[IFD0][YCbCrPositioning]],

“版权” = $exif[IFD0][Copyright],

“摄影版权” = $exif[COMPUTED][Copyright.Photographer],

“编辑版权” = $exif[COMPUTED][Copyright.Editor],

“拍摄信息” = “—————————–“,

“Exif版本” = $exif[EXIF][ExifVersion],

“FlashPix版本” = “Ver. “.number_format($exif[EXIF][FlashPixVersion]/100,2),

“拍摄时间” = $exif[EXIF][DateTimeOriginal],

“数字化时间” = $exif[EXIF][DateTimeDigitized],

“拍摄分辨率高” = $exif[COMPUTED][Height],

“拍摄分辨率宽” = $exif[COMPUTED][Width],

The actual aperture value of lens when the image was taken.

Unit is APEX.

To convert this value to ordinary F-number(F-stop),

calculate this value’s power of root 2 (=1.4142).

For example, if the ApertureValue is ‘5’, F-number is pow(1.41425,5) = F5.6.

“光圈” = $exif[EXIF][ApertureValue],

“快门速度” = $exif[EXIF][ShutterSpeedValue],

“快门光圈” = $exif[COMPUTED][ApertureFNumber],

“最大光圈值” = “F”.$exif[EXIF][MaxApertureValue],

“曝光时间” = $exif[EXIF][ExposureTime],

“F-Number” = $exif[EXIF][FNumber],

“测光模式” = GetImageInfoVal($exif[EXIF][MeteringMode],$MeteringMode_arr),

“光源” = GetImageInfoVal($exif[EXIF][LightSource], $Lightsource_arr),

“闪光灯” = GetImageInfoVal($exif[EXIF][Flash], $Flash_arr),

“曝光模式” = ($exif[EXIF][ExposureMode]==1?”手动”:”自动”),

“白平衡” = ($exif[EXIF][WhiteBalance]==1?”手动”:”自动”),

“曝光程序” = $ExposureProgram[$exif[EXIF][ExposureProgram]],

Brightness of taken subject, unit is APEX. To calculate Exposure(Ev) from BrigtnessValue(Bv), you must add SensitivityValue(Sv).

Ev=Bv+Sv Sv=log((ISOSpeedRating/3.125),2)

ISO100:Sv=5, ISO200:Sv=6, ISO400:Sv=7, ISO125:Sv=5.32.

“曝光补偿” = $exif[EXIF][ExposureBiasValue].”EV”,

“ISO感光度” = $exif[EXIF][ISOSpeedRatings],

“分量配置” = (bin2hex($exif[EXIF][ComponentsConfiguration])==”01020300″?”YCbCr”:”RGB”),//’0x04,0x05,0x06,0x00’=”RGB” ‘0x01,0x02,0x03,0x00’=”YCbCr”

“图像压缩率” = $exif[EXIF][CompressedBitsPerPixel].”Bits/Pixel”,

“对焦距离” = $exif[COMPUTED][FocusDistance].”m”,

“焦距” = $exif[EXIF][FocalLength].”mm”,

“等价35mm焦距” = $exif[EXIF][FocalLengthIn35mmFilm].”mm”,

Stores user comment. This tag allows to use two-byte character code or unicode. First 8 bytes describe the character code. ‘JIS’ is a Japanese character code (known as Kanji).

‘0x41,0x53,0x43,0x49,0x49,0x00,0x00,0x00’:ASCII

‘0x4a,0x49,0x53,0x00,0x00,0x00,0x00,0x00’:JIS

‘0x55,0x4e,0x49,0x43,0x4f,0x44,0x45,0x00’:Unicode

‘0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00’:Undefined

“用户注释编码” = $exif[COMPUTED][UserCommentEncoding],

“用户注释” = $exif[COMPUTED][UserComment],

“色彩空间” = ($exif[EXIF][ColorSpace]==1?”sRGB”:”Uncalibrated”),

“Exif图像宽度” = $exif[EXIF][ExifImageLength],

“Exif图像高度” = $exif[EXIF][ExifImageWidth],

“文件来源” = (bin2hex($exif[EXIF][FileSource])==0x03?”digital still camera”:”unknown”),

“场景类型” = (bin2hex($exif[EXIF][SceneType])==0x01?”A directly photographed image”:”unknown”),

“缩略图文件格式” = $exif[COMPUTED][Thumbnail.FileType],

“缩略图Mime格式” = $exif[COMPUTED][Thumbnail.MimeType]

);

}

return $new_img_info;

}

$innerhtml = “”;

$exif = GetImageInfo($_GET[‘img’]);

$innerhtml .= “TABLE”;

foreach($exif as $name=$val) {

$innerhtml .= “TRTD{$name}/TDTD{$val}/TD/TR”;

}

$innerhtml .= “TRTD colspan=\”2\””;

if ($_GET[‘img’]) {

$image = exif_thumbnail($_GET[‘img’]);

} else {

$image = false;

}

if ($image!==false) {

$innerhtml .= “img src=\”thumbnail.php?img=”.$_GET[‘img’].”\””;

} else {

// no thumbnail available, handle the error here

$innerhtml .= “No thumbnail available”;

}

$innerhtml .= “/TD/TR/TABLE”;

html

head

title图片信息/title

meta http-equiv=”Content-Type” content=”text/html; charset=??????”

/head

body

SCRIPT

!–

//初始化内容值

parent.followTd?=$_GET[‘r_id’];?.innerHTML=’?=$innerhtml;?’;

//已读取

parent.document.images.followImg?=$_GET[‘r_id’];?.loaded=’yes’;

—

/SCRIPT

/body

/html

PHP上传图片时，如何exif_read_data获取exif

php获取

图片的exif信息，php自带一个exif_read_data函数可以用来读取图片的exif信息，代码来自php手册：

?php

echo “test1.jpg:br /\n”;

$exif = exif_read_data(‘tests/test1.jpg’, ‘IFD0’);

echo $exif===false ? “No header data found.br /\n” : “Image contains headersbr /\n”;

$exif = exif_read_data(‘tests/test2.jpg’, 0, true);

echo “test2.jpg:br /\n”;

foreach ($exif as $key = $section) {

foreach ($section as $name = $val) {

echo “$key.$name: $valbr /\n”;

}

输出结果如下

test1.jpg:

No header data found.

test2.jpg:

FILE.FileName: test2.jpg

FILE.FileDateTime: 1017666176

FILE.FileSize: 1240

FILE.FileType: 2

FILE.SectionsFound: ANY_TAG, IFD0, THUMBNAIL, COMMENT

COMPUTED.html:

COMPUTED.Height: 1

COMPUTED.Width: 1

COMPUTED.IsColor: 1

COMPUTED.ByteOrderMotorola: 1

COMPUTED.UserComment: Exif test image.

COMPUTED.UserCommentEncoding: ASCII

COMPUTED.Copyright: Photo (c) M.Boerger, Edited by M.Boerger.

COMPUTED.Copyright.Photographer: Photo (c) M.Boerger

COMPUTED.Copyright.Editor: Edited by M.Boerger.

IFD0.Copyright: Photo (c) M.Boerger

IFD0.UserComment: ASCII

THUMBNAIL.JPEGInterchangeFormat: 134

THUMBNAIL.JPEGInterchangeFormatLength: 523

COMMENT.0: Comment #1.

COMMENT.1: Comment #2.

COMMENT.2: Comment #3end

THUMBNAIL.JPEGInterchangeFormat: 134

THUMBNAIL.Thumbnail.Height: 1

我怎样才能修改图像EXIF数据与PHP

你可以参考一下这个方法 Imagick::setImageProperty() 网页链接

需要先安装 ImageMagick

php删除图片文件代码

php删除文件非常简单,用unlink函数简单操作:

?php

$file = ‘dirlist.php’;

$result = @unlink ($file);

if ($result == false) {

echo ‘蚊子赶走了’;

} else {

echo ‘无法赶走’;

}

原创文章，作者：简单一点，如若转载，请注明出处：https://www.506064.com/n/128656.html

php移除图片exif信息（图片删除exif信息）

本文目录一览：

php图片缩放，对于包含exif信息的数码图片怎么处理？

php 怎么修改图片exif信息？或者有没有其他的程序可以修改的？

PHP如何读取照片的exif信息实现代码

PHP上传图片时，如何exif_read_data获取exif

我怎样才能修改图像EXIF数据与PHP

php删除图片文件代码

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