一个完整的PHP图片上传 生成缩略图 插入数据库代码流程

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下面是PHP编写上传图片同时生成缩略图和插入数据库的一个完代码。

<?php

$title = $_POST[title];

$descrīption = $_POST[descrīption];

$albumID = $_POST[albumID];

$iscommend = $_POST[iscommend];

$isvisible = $_POST[isvisible];

$uploadtime = date(“Y-m-d H:i:s”);

$MAX_FILE_SIZE = floor($_POST[MAX_FILE_SIZE] / 1024);

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$FileExtName = strtolower(pathinfo($_FILES[url][name],PATHINFO_EXTENSION));

if(!(($FileExtName == gif) or ($FileExtName == jpg) or ($FileExtName == jpeg) or ($FileExtName == png))){

echo “”;

echo ” alert(您上传的文件类型不对，本系统仅支持PNG，JPG，GIF三种格式。);”;

echo ” location=../uploadpicture.php?albumID=$albumID;”;

echo “”;

exit;

}

$Filename = date(“YmdHis”).substr(microtime(),2,5)…$FileExtName;

$PictureDir = substr(pathinfo($_SERVER[scrīpt_FILENAME],PATHINFO_DIRNAME),0,strlen(pathinfo($_SERVER[scrīpt_FILENAME],PATHINFO_DIRNAME))-8);

$UploadURL = $PictureDir./.$PictureFolder.$Filename;

$ThumbsURL = $PictureDir./.$ThumbsFolder.$Filename;

if (!move_uploaded_file($_FILES[url][tmp_name], $UploadURL)){

echo “”;

echo ” alert(上传失败，图片大小不能超过 $MAX_FILE_SIZE KB。);”;

echo ” location=../uploadpicture.php?albumID=$albumID;”;

echo “”;

exit;

}

list($RealWidth, $RealHeight) = getimagesize($UploadURL);

if($RealWidth < $MaxThumbWidth){

$percent = 1;

} else {

$percent = $MaxThumbWidth / $RealWidth;

}

$NewWidth = $RealWidth * $percent;

$NewHeight = $RealHeight * $percent;

$thumb = imagecreatetruecolor($NewWidth, $NewHeight);

list($width, $height, $PictureType, $attrib) = getimagesize($UploadURL);

switch($PictureType)

{

case “1”: $source = imagecreatefromgif($UploadURL); break;

case “2”: $source = imagecreatefromjpeg($UploadURL); break;

case “3”: $source = imagecreatefrompng($UploadURL); break;

}

imagecopyresized($thumb, $source, 0, 0, 0, 0, $NewWidth, $NewHeight, $RealWidth, $RealHeight);

switch($PictureType)

{

case “1”: imagegif($thumb, $ThumbsURL); break;

case “2”: imagejpeg($thumb, $ThumbsURL); break;

case “3”: imagepng($thumb, $ThumbsURL); break;

}

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$newpicture_SQL = “INSERT INTO pictures (flag,title,url,descrīption,uploadtime,updatetime,isvisible,iscommend) VALUES ($albumID,$title,$Filename,$descrīption,$uploadtime,$uploadtime,$isvisible,$iscommend);”;

$setCover = “Update pictures SET url = $Filename WHERE id = $albumID;”;

$totalPictures_SQL = “SELECT * FROM pictures WHERE flag = $albumID;”;

$totalPictures = mysql_query($totalPictures_SQL, $hesweb) or die(mysql_error());

$totalRows_totalPictures = mysql_num_rows($totalPictures);

$newpicture = mysql_query($newpicture_SQL, $hesweb) or die(mysql_error());

$pictureID = mysql_insert_id($hesweb);

$coverFlag = “UPDATE pictures SET iscover = 1 WHERE id = $pictureID;”;

if($totalRows_totalPictures < 1){

$cover = mysql_query($setCover, $hesweb) or die(mysql_error());

$flag = mysql_query($coverFlag, $hesweb) or die(mysql_error());

}

if($coverFlag){

echo “”;

echo ” alert(上传成功。);”;

echo ” location=../uploadpicture.php?albumID=$albumID;”;

echo “”;

}

?>

看啦上面的代码希望大家能有所收获。

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