php实现图片上传并利用ImageMagick生成缩略图
使用ImageMagick，您可以轻松，更快地创建缩略图，比使用PHP的容易得多。
<?php
//Locationtouploadmainimage:
$mainDir=$_SERVER['DOCUMENT_ROOT'].'/images/l/';
//Locationtocreatethethumbimage:
$smalDir=$_SERVER['DOCUMENT_ROOT'].'/images/s/';
//Commandtouse:
$command='/usr/bin/convert';
//Thumbnailwidth:
$size=210;
//Makesurewehaveanimage:
if(isset($_POST['submit'])){
if(getimagesize($_FILES['photo']['tmp_name'])){
$name=$_FILES['photo']['name'];
$uploadfile=$mainDir.$name;
move_uploaded_file($_FILES['photo']['tmp_name'],$uploadfile);
$lrgImg=$mainDir.$name;
$smlImg=$smalDir.$name;
$imageMagick=$command."'".$lrgImg."'-resize'$size''".$smlImg."'";
shell_exec($imageMagick);
}
header("Location:/test.php");
exit;
}else{
?>
<formaction="<?phpecho$_SERVER['PHP_SELF'];?>"method="post"enctype="multipart/form-data">
<p><inputtype="file"name="photo"/></p>
<p><inputtype="submit"value="Upload!"name="submit"/></p>
</form>
<?php
foreach(glob($smalDir.'*')as$img){
echo'<imgsrc="'.str_replace($_SERVER['DOCUMENT_ROOT'],'',$img).'"/>';
}
}
?>
希望本文所述对大家学习php程序设计有所帮助。