PHP:iptcembed()的用法_GD库图像处理函数(phpipam使用)

iptcembed

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(PHP 4, PHP 5)

iptcembed — 将二进制 IPTC 数据嵌入到一幅 JPEG 图像中

说明 mixed iptcembed ( string $iptcdata , string $jpeg_file_name [, int $spool ] )

Embeds binary IPTC data into a JPEG image.

参数

iptcdata

The data to be written.

jpeg_file_name

Path to the JPEG image.

spool

Spool flag. If the spool flag is over 2 then the JPEG will be returned as a string.

返回值

If success and spool flag is lower than 2 then the JPEG will not be returned as a string, FALSE on errors.

范例

Example #1 Embedding IPTC data into a JPEG

<?php//iptc_make_tag()functionbyThiesC.Arntzenfunctioniptc_make_tag($rec,$data,$value){$length=strlen($value);$retval=chr(0x1C).chr($rec).chr($data);if($length<0x){$retval.=chr($length>>8).chr($length&0xFF);}else{$retval.=chr(0x).chr(0x).chr(($length>>)&0xFF).chr(($length>>)&0xFF).chr(($length>>8)&0xFF).chr($length&0xFF);}return$retval.$value;}//Pathtojpegfile$path='./phplogo.jpg';//WeneedtocheckiftheresanyIPTCdatainthejpegimage.Ifthereisthen//bailoutbecausewecannotembedanyimagethatalreadyhassomeIPTCdata!$image=getimagesize($path,$info);if(isset($info['APP'])){die('Error:IPTCdatafoundinsourceimage,cannotcontinue');}//SettheIPTCtags$iptc=array('2#'=>'Testimage','2#'=>'Copyright-,ThePHPGroup');//ConverttheIPTCtagsintobinarycode$data='';foreach($iptcas$tag=>$string){$tag=substr($tag,2);$data.=iptc_make_tag(2,$tag,$string);}//EmbedtheIPTCdata$content=iptcembed($data,$path);//Writethenewimagedataouttothefile.$fp=fopen($path,"wb");fwrite($fp,$content);fclose($fp);?> 注释

Note:

此函数不需要 GD 图象库。

PHP:png2wbmp()的用法_GD库图像处理函数 png2wbmp(PHP4=4.0.5,PHP5)png2wbmp将PNG图像文件转换为WBMP图像文件说明boolpng2wbmp(string$pngname,string$wbmpname,int$dest_height,int$dest_width,int$threshold)将名为pngname的PNG文件

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