生成缩略图并保存文件代码,PHP代码库,德仔网

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【PHP】生成缩略图并保存文件
作者:Dezai.CN / 发布于2011/6/11/ 422
<div><span style="color: rgb(0,0,0); font-weight: bold">function</span> createthumb<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$IMAGE_SOURCE</span>,<span style="color: rgb(0,0,255)">$THUMB_X</span>,<span style="color: rgb(0,0,255)">$THUMB_Y</span>,<span style="color: rgb(0,0,255)">$OUTPUT_FILE</span>,<span style="color: rgb(0,0,255)">$ASPECT</span>=<span style="color: rgb(255,0,0)">"true"</span>,<span style="color: rgb(0,0,255)">$format</span>=<span style="color: rgb(255,0,0)">"jpg"</span><span style="color: rgb(102,204,102)">)</span><span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(0,0,255)">$BACKUP_FILE</span> = <span style="color: rgb(0,0,255)">$OUTPUT_FILE</span> . <span style="color: rgb(255,0,0)">"_backup.$format"</span>;
<a href="http://www.php.net/copy" target="_blank"><span style="color: rgb(0,0,102)">copy</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$IMAGE_SOURCE</span>,<span style="color: rgb(0,0,255)">$BACKUP_FILE</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(0,0,255)">$IMAGE_PROPERTIES</span> = <a href="http://www.php.net/getimagesize" target="_blank"><span style="color: rgb(0,0,102)">GetImageSize</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$BACKUP_FILE</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(177,177,0)">if</span> <span style="color: rgb(102,204,102)">(</span>!<span style="color: rgb(0,0,255)">$IMAGE_PROPERTIES</span><span style="color: rgb(102,204,102)">[</span><span style="color: rgb(204,102,204)">2</span><span style="color: rgb(102,204,102)">]</span> == <span style="color: rgb(204,102,204)">2</span><span style="color: rgb(102,204,102)">)</span> <span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(177,177,0)">return</span><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(204,102,204)">0</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(102,204,102)">}</span> <span style="color: rgb(177,177,0)">else</span> <span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(177,177,0)">if</span><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$format</span>==<span style="color: rgb(255,0,0)">"jpg"</span><span style="color: rgb(102,204,102)">)</span>
<span style="color: rgb(0,0,255)">$SRC_IMAGE</span> = ImageCreateFromJPEG<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$BACKUP_FILE</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(177,177,0)">else</span> 
<span style="color: rgb(0,0,255)">$SRC_IMAGE</span> = ImageCreateFromGIF<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$BACKUP_FILE</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(0,0,255)">$SRC_X</span> = ImageSX<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$SRC_IMAGE</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(0,0,255)">$SRC_Y</span> = ImageSY<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$SRC_IMAGE</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(177,177,0)">if</span><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$ASPECT</span>==<span style="color: rgb(255,0,0)">"true"</span><span style="color: rgb(102,204,102)">)</span>
<span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(0,0,255)">$SCALEX</span> = <span style="color: rgb(0,0,255)">$THUMB_X</span>/<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$SRC_X</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(0,0,255)">$SCALEY</span> = <span style="color: rgb(0,0,255)">$THUMB_Y</span>/<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$SRC_Y</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(177,177,0)">if</span> <span style="color: rgb(102,204,102)">(</span><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$THUMB_Y</span> == <span style="color: rgb(204,102,204)">0</span><span style="color: rgb(102,204,102)">)</span> && <span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$THUMB_X</span> == <span style="color: rgb(204,102,204)">0</span><span style="color: rgb(102,204,102)">)</span><span style="color: rgb(102,204,102)">)</span> <span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(177,177,0)">return</span><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(204,102,204)">0</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(102,204,102)">}</span> <span style="color: rgb(177,177,0)">elseif</span> <span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$THUMB_Y</span> == <span style="color: rgb(204,102,204)">0</span><span style="color: rgb(102,204,102)">)</span> <span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(0,0,255)">$THUMB_Y</span> = <span style="color: rgb(0,0,255)">$SRC_Y</span>*<span style="color: rgb(0,0,255)">$SCALEX</span>;
<span style="color: rgb(0,0,255)">$RATIO</span>=<a href="http://www.php.net/max" target="_blank"><span style="color: rgb(0,0,102)">MAX</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$SCALEY</span>,<span style="color: rgb(0,0,255)">$SCALEX</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(102,204,102)">}</span> <span style="color: rgb(177,177,0)">elseif</span> <span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$THUMB_X</span> == <span style="color: rgb(204,102,204)">0</span><span style="color: rgb(102,204,102)">)</span> <span style="color: rgb(102,204,102)">{</span>
<span style="color: rgb(0,0,255)">$THUMB_X</span> = <span style="color: rgb(0,0,255)">$SRC_X</span>*<span style="color: rgb(0,0,255)">$SCALEY</span>;
<span style="color: rgb(0,0,255)">$RATIO</span>=<a href="http://www.php.net/max" target="_blank"><span style="color: rgb(0,0,102)">MAX</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$SCALEY</span>,<span style="color: rgb(0,0,255)">$SCALEX</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(102,204,102)">}</span>
<span style="color: rgb(177,177,0)">if</span><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$SCALEY</span>><span style="color: rgb(204,102,204)">0</span> && <span style="color: rgb(0,0,255)">$SCALEY</span><<span style="color: rgb(204,102,204)">1</span> && <span style="color: rgb(0,0,255)">$SCALEX</span>><span style="color: rgb(204,102,204)">0</span> && <span style="color: rgb(0,0,255)">$SCALEX</span><<span style="color: rgb(204,102,204)">1</span><span style="color: rgb(102,204,102)">)</span>
<span style="color: rgb(0,0,255)">$RATIO</span>=<a href="http://www.php.net/min" target="_blank"><span style="color: rgb(0,0,102)">MIN</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$SCALEY</span>,<span style="color: rgb(0,0,255)">$SCALEX</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(177,177,0)">elseif</span><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$SCALEX</span>><span style="color: rgb(204,102,204)">1</span> || <span style="color: rgb(0,0,255)">$SCALEY</span>><span style="color: rgb(204,102,204)">1</span><span style="color: rgb(102,204,102)">)</span>
<span style="color: rgb(0,0,255)">$RATIO</span>=<a href="http://www.php.net/max" target="_blank"><span style="color: rgb(0,0,102)">MAX</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$SCALEY</span>,<span style="color: rgb(0,0,255)">$SCALEX</span><span style="color: rgb(102,204,102)">)</span>;

<span style="color: rgb(0,0,255)">$THUMB_X</span>=<span style="color: rgb(0,0,255)">$SRC_X</span>*<span style="color: rgb(0,0,255)">$RATIO</span>; 
<span style="color: rgb(0,0,255)">$THUMB_Y</span>=<span style="color: rgb(0,0,255)">$SRC_Y</span>*<span style="color: rgb(0,0,255)">$RATIO</span>; 
<span style="color: rgb(102,204,102)">}</span>
<span style="color: rgb(177,177,0)">else</span>
<span style="color: rgb(102,204,102)">{</span> 
<span style="color: rgb(0,0,255)">$RATIO</span>=<span style="color: rgb(204,102,204)">1</span>; 
<span style="color: rgb(102,204,102)">}</span>
<span style="color: rgb(0,0,255)">$THUMB_X</span> = <span style="color: rgb(102,204,102)">(</span>int<span style="color: rgb(102,204,102)">)</span><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$THUMB_X</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(0,0,255)">$THUMB_Y</span> = <span style="color: rgb(102,204,102)">(</span>int<span style="color: rgb(102,204,102)">)</span><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$THUMB_Y</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(0,0,255)">$DEST_IMAGE</span> = imagecreatetruecolor<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$THUMB_X</span>, <span style="color: rgb(0,0,255)">$THUMB_Y</span><span style="color: rgb(102,204,102)">)</span>;
<a href="http://www.php.net/unlink" target="_blank"><span style="color: rgb(0,0,102)">unlink</span></a><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$BACKUP_FILE</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(177,177,0)">if</span> <span style="color: rgb(102,204,102)">(</span>!imagecopyresampled<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$DEST_IMAGE</span>, <span style="color: rgb(0,0,255)">$SRC_IMAGE</span>, <span style="color: rgb(204,102,204)">0</span>, <span style="color: rgb(204,102,204)">0</span>, <span style="color: rgb(204,102,204)">0</span>, <span style="color: rgb(204,102,204)">0</span>, <span style="color: rgb(0,0,255)">$THUMB_X</span>, <span style="color: rgb(0,0,255)">$THUMB_Y</span>, <span style="color: rgb(0,0,255)">$SRC_X</span>, <span style="color: rgb(0,0,255)">$SRC_Y</span><span style="color: rgb(102,204,102)">)</span><span style="color: rgb(102,204,102)">)</span> <span style="color: rgb(102,204,102)">{</span>
imagedestroy<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$SRC_IMAGE</span><span style="color: rgb(102,204,102)">)</span>;
imagedestroy<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$DEST_IMAGE</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(177,177,0)">return</span><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(204,102,204)">0</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(102,204,102)">}</span> <span style="color: rgb(177,177,0)">else</span> <span style="color: rgb(102,204,102)">{</span>
imagedestroy<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$SRC_IMAGE</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(177,177,0)">if</span> <span style="color: rgb(102,204,102)">(</span>ImageJPEG<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$DEST_IMAGE</span>,<span style="color: rgb(0,0,255)">$OUTPUT_FILE</span><span style="color: rgb(102,204,102)">)</span><span style="color: rgb(102,204,102)">)</span> <span style="color: rgb(102,204,102)">{</span>
imagedestroy<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$DEST_IMAGE</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(177,177,0)">return</span><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(204,102,204)">1</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(102,204,102)">}</span>
imagedestroy<span style="color: rgb(102,204,102)">(</span><span style="color: rgb(0,0,255)">$DEST_IMAGE</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(102,204,102)">}</span>
<span style="color: rgb(177,177,0)">return</span><span style="color: rgb(102,204,102)">(</span><span style="color: rgb(204,102,204)">0</span><span style="color: rgb(102,204,102)">)</span>;
<span style="color: rgb(102,204,102)">}</span>

<span style="color: rgb(102,204,102)">}</span>
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