📄 function.iptcembed.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Embed binary IPTC data into a JPEG image</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagexbm.html">imagexbm</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.iptcparse.html">iptcparse</a></div> <div class="up"><a href="ref.image.html">GD Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.iptcembed" class="refentry"> <div class="refnamediv"> <h1 class="refname">iptcembed</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">iptcembed</span> — <span class="dc-title">Embed binary IPTC data into a JPEG image</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><b><b>iptcembed</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$iptcdata</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$jpeg_file_name</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$spool</tt></span> ] )</div> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">iptcdata</tt></i></span> <dd> <p class="para"> The data to be written. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">jpeg_file_name</tt></i></span> <dd> <p class="para"> Path to the JPEG image. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">spool</tt></i></span> <dd> <p class="para"> Spool flag. If the spool flag is over 2 then the JPEG will be returned as a string. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> If success and spool flag is lower than 2 then the JPEG will not be returned as a string, <b><tt>FALSE</tt></b> on errors. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <div class="example"> <p><b>Example #1 Embedding IPTC data into a JPEG</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /><br /></span><span style="color: #FF8000">// iptc_make_tag() function by Thies C. Arntzen<br /></span><span style="color: #007700">function </span><span style="color: #0000BB">iptc_make_tag</span><span style="color: #007700">(</span><span style="color: #0000BB">$rec</span><span style="color: #007700">, </span><span style="color: #0000BB">$data</span><span style="color: #007700">, </span><span style="color: #0000BB">$value</span><span style="color: #007700">)<br />{<br /> </span><span style="color: #0000BB">$length </span><span style="color: #007700">= </span><span style="color: #0000BB">strlen</span><span style="color: #007700">(</span><span style="color: #0000BB">$value</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$retval </span><span style="color: #007700">= </span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">0x1C</span><span style="color: #007700">) . </span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">$rec</span><span style="color: #007700">) . </span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">);<br /><br /> if(</span><span style="color: #0000BB">$length </span><span style="color: #007700">< </span><span style="color: #0000BB">0x8000</span><span style="color: #007700">)<br /> {<br /> </span><span style="color: #0000BB">$retval </span><span style="color: #007700">.= </span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">$length </span><span style="color: #007700">>> </span><span style="color: #0000BB">8</span><span style="color: #007700">) . </span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">$length </span><span style="color: #007700">& </span><span style="color: #0000BB">0xFF</span><span style="color: #007700">);<br /> }<br /> else<br /> {<br /> </span><span style="color: #0000BB">$retval </span><span style="color: #007700">.= </span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">0x80</span><span style="color: #007700">) . <br /> </span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">0x04</span><span style="color: #007700">) . <br /> </span><span style="color: #0000BB">chr</span><span style="color: #007700">((</span><span style="color: #0000BB">$length </span><span style="color: #007700">>> </span><span style="color: #0000BB">24</span><span style="color: #007700">) & </span><span style="color: #0000BB">0xFF</span><span style="color: #007700">) . <br /> </span><span style="color: #0000BB">chr</span><span style="color: #007700">((</span><span style="color: #0000BB">$length </span><span style="color: #007700">>> </span><span style="color: #0000BB">16</span><span style="color: #007700">) & </span><span style="color: #0000BB">0xFF</span><span style="color: #007700">) . <br /> </span><span style="color: #0000BB">chr</span><span style="color: #007700">((</span><span style="color: #0000BB">$length </span><span style="color: #007700">>> </span><span style="color: #0000BB">8</span><span style="color: #007700">) & </span><span style="color: #0000BB">0xFF</span><span style="color: #007700">) . <br /> </span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">$length </span><span style="color: #007700">& </span><span style="color: #0000BB">0xFF</span><span style="color: #007700">);<br /> }<br /><br /> return </span><span style="color: #0000BB">$retval </span><span style="color: #007700">. </span><span style="color: #0000BB">$value</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #FF8000">// Path to jpeg file<br /></span><span style="color: #0000BB">$path </span><span style="color: #007700">= </span><span style="color: #DD0000">'./phplogo.jpg'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// We need to check if theres any IPTC data in the jpeg image. If there is then <br />// bail out because we cannot embed any image that already has some IPTC data!<br /></span><span style="color: #0000BB">$image </span><span style="color: #007700">= </span><span style="color: #0000BB">getimagesize</span><span style="color: #007700">(</span><span style="color: #0000BB">$path</span><span style="color: #007700">, </span><span style="color: #0000BB">$info</span><span style="color: #007700">);<br /><br />if(isset(</span><span style="color: #0000BB">$info</span><span style="color: #007700">[</span><span style="color: #DD0000">'APP13'</span><span style="color: #007700">]))<br />{<br /> die(</span><span style="color: #DD0000">'Error: IPTC data found in source image, cannot continue'</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #FF8000">// Set the IPTC tags<br /></span><span style="color: #0000BB">$iptc </span><span style="color: #007700">= array(<br /> </span><span style="color: #DD0000">'2#120' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'Test image'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'2#116' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'Copyright 2008, The PHP Group'<br /></span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Convert the IPTC tags into binary code<br /></span><span style="color: #0000BB">$data </span><span style="color: #007700">= </span><span style="color: #DD0000">''</span><span style="color: #007700">;<br /><br />foreach(</span><span style="color: #0000BB">$iptc </span><span style="color: #007700">as </span><span style="color: #0000BB">$tag </span><span style="color: #007700">=> </span><span style="color: #0000BB">$string</span><span style="color: #007700">)<br />{<br /> </span><span style="color: #0000BB">$tag </span><span style="color: #007700">= </span><span style="color: #0000BB">substr</span><span style="color: #007700">(</span><span style="color: #0000BB">$tag</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$data </span><span style="color: #007700">.= </span><span style="color: #0000BB">iptc_make_tag</span><span style="color: #007700">(</span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #0000BB">substr</span><span style="color: #007700">(</span><span style="color: #0000BB">$tag</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">), </span><span style="color: #0000BB">$string</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #FF8000">// Embed the IPTC data<br /></span><span style="color: #0000BB">$content </span><span style="color: #007700">= </span><span style="color: #0000BB">iptcembed</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">, </span><span style="color: #0000BB">$path</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </div> <div class="refsect1 notes"> <h3 class="title">Notes</h3> <blockquote><p><b class="note">Note</b>: This function does not require the GD image library. <br /> </p></blockquote> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagexbm.html">imagexbm</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.iptcparse.html">iptcparse</a></div> <div class="up"><a href="ref.image.html">GD Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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