首先使用一个ini文件来设置要缩放的大小,其中为宽或高0的则为图片放大或缩小,都为0则还是原大小,都不为0都拉抻成指定的大小。 注意:ini文件使用php解释时为注释文件,什么也没有输出,这是为了安全起见而故意为之。而;则是ini文件的注释。 我设置的ini文件例子如下: <div class="codetitle"><a style="CURSOR: pointer" data="17840" class="copybut" id="copybut17840" onclick="doCopy('code17840')"> 代码如下:<div class="codebody" id="code17840"> <?php / ;Translate the image format using the original image size [Translation] width=0 height=0 ;Stretch the image to the specified size [Stretch] width=800 height=600 ;Zoom the image to the specified Width with height auto size [AutoHeight] width=740 height=0 ;Zoom the image to the specified Height with width auto size [AutoWidth] width=0 height=380 / ?> 下面是编写的缩放图片的php代码,其中变量classes是一个数组,可以选择任意多个ini文件中指定的设置: <div class="codetitle"><a style="CURSOR: pointer" data="9554" class="copybut" id="copybut9554" onclick="doCopy('code9554')"> 代码如下:<div class="codebody" id="code9554"> <?php $oimg = "test.jpg";//Original image name $classes = array('Translation','AutoHeight','AutoWidth','Stretch');//Give classes for the new creating images' size which are defined in the specified ini file $suffix = 'jpg';//The new image's suffix $inifile = 'image.ini.php'; $size = getimagesize($oimg); $x = $size[0]/$size[1]; $name = explode('.',$oimg); if(!file_exists($inifile)) die('Ini file does not exist!'); $cn = parse_inifile($inifile,true);//Parse the class style image size from ini file foreach($classes as $class){ foreach($cn as $k=>$v){ if($k==$class){ if($v['width'] && $v['height']){ $thumbWidth = $v['width']; $thumbHeight = $v['height']; }elseif($v['width']){ $thumbWidth = $v['width']; $thumbHeight = round($thumbWidth/$x); }elseif($v['height']){ $thumbHeight = $v['height']; $thumbWidth = round($thumbHeight*$x); }else{ $thumbWidth = $size[0]; $thumbHeight = $size[1]; } break; } } if(!isset($thumbHeight) && !isset($thumbWidth)) die('Ini file Settings error!'); $nimg = $name[0].''.$class.'.'.$suffix;//New image file name $source = imagecreatefromjpeg($oimg); $thumb = imagecreatetruecolor($thumbWidth,$thumbHeight); imagecopyresampled($thumb,$source,$thumbWidth,$thumbHeight,$size[0],$size[1]); if($suffix=='jpg') $method = 'imagejpeg'; else $method='image'.$suffix; $method($thumb,$nimg); imagedestroy($thumb);//Release the image source imagedestroy($source); } ?>
(编辑:李大同)
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