PHP upload files and generate thumbnail code _php tutorial

PHP uploads files and generates thumbnail code

if (Isset ($_files[' upimg '))
{
if ($userGroup [$LOGINARR [' Group ']][' upload '] = = 0)
{
Echo ' {' ERROR ': ' Your user group does not have permission to upload pictures! '} ';
}
Else
{
$savePath = "attachment/img/". Date (' y/m/d/h ');

Mkdirs ($savePath);

$fileType = Strtolower (STRRCHR ($_files[' upimg ' [' Name '], "."));

if (!in_array ($fileType, Array (". jpg", ". jpeg", ". gif", ". png")))
{
Echo ' {"error": "Currently only supports images formatted as JPG, JPEG, GIF, PNG!"} ';
}
ElseIf ($_files[' upimg ' [' Size '] > 204800)
{
Echo ' {' Error ': ' The picture cannot exceed 200k! '} ';
}
Else
{
$SAVEIMG = $savePath. " /". $LOGINARR [' uid ']." _ ". Time (). Rand (). $fileType;

if (@move_uploaded_file ($_files[' upimg ' [' tmp_name '], $SAVEIMG))
{
Echo ' {"Error": "", "MSG": "/http". $site _domain. $site _catalog. $saveImg. ' "};
}
Else
{
Echo ' {' Error ': ' Picture upload failed! '} ';
}
}
}
}

if ($loginArr [' state '] = = 0)
{
Echo ' {' ERROR ': ' You are not logged in! '} ';
}
Else
{
$avatarPath = "attachment/avatar/". ($LOGINARR [' uid ']%32). " /". ($LOGINARR [' uid ']%257). " /". $LOGINARR [' uid '];

if (Isset ($_files[' Upavatar '))
{
Mkdirs ($avatarPath);

$fileType = Strtolower (STRRCHR ($_files[' Upavatar ' [' Name '], "."));

if (!in_array ($fileType, Array (". jpg", ". jpeg", ". gif", ". png")))
{
Echo ' {"error": "Currently only supports images formatted as JPG, JPEG, GIF, PNG!"} ';
}
ElseIf ($_files[' Upavatar ' [' Size '] > 2097152)
{
Echo ' {' Error ': ' The picture cannot exceed 2mb! '} ';
}
Else
{
$imgInfo = @getimagesize ($_files[' Upavatar ' [' tmp_name ']);

if (! $imgInfo | |!in_array ($imgInfo [2], Array ()))
{
Echo ' {' Error ': ' The system does not recognize the file you uploaded! '} ';
}
Else
{
$TmpAvatar = $avatarPath. " /temp ". $fileType;

if (@move_uploaded_file ($_files[' Upavatar ' [' tmp_name '], $TmpAvatar))
{
$maxWidth = 520;

$maxHeight = 520;

if ($maxWidth > $imgInfo [0] | | $maxHeight > $imgInfo [1])
{
$maxWidth = $imgInfo [0];

$maxHeight = $imgInfo [1];
}
Else
{
if ($imgInfo [0] < $imgInfo [1])
$maxWidth = ($maxHeight/$imgInfo [1]) * $imgInfo [0];
Else
$maxHeight = ($maxWidth/$imgInfo [0]) * $imgInfo [1];
}

if ($maxWidth < 40)
{
$maxWidth = 40;
}

if ($maxHeight < 40)
{
$maxHeight = 40;
}

$image _p = Imagecreatetruecolor ($maxWidth, $maxHeight);

Switch ($imgInfo [2])
{
Case 1:
$image = Imagecreatefromgif ($TmpAvatar);
Break
Case 2:
$image = Imagecreatefromjpeg ($TmpAvatar);
Break
Case 3:
$image = Imagecreatefrompng ($TmpAvatar);
Break
}

Imagecopyresampled ($image _p, $image, 0, 0, 0, 0, $maxWidth, $maxHeight, $imgInfo [0], $imgInfo [1]);

Imagejpeg ($image _p, $avatarPath. " /temp.jpg ", 100);

Imagedestroy ($image _p);

Imagedestroy ($image);

if ($fileType! = ". jpg" && file_exists ($TmpAvatar))
{
Unlink ($TmpAvatar);
}

Echo ' {"Error": "", "url": "'. $avatarPath. ' /temp.jpg? '. Rand (). ' "," width ":" '. $maxWidth. ' "," height ":" '. $maxHeight. '} ';
}
Else
{
Echo ' {' Error ': ' Picture upload failed! '} ';
}
}
}
}

if (Isset ($_post[' x '],$_post[' y '],$_post[' W '],$_post[' h ']))
{
if (Is_numeric ($_post[' x ')) && is_numeric ($_post[' y ']) && $_post[' W '] > 0 && $_post[' h '] > 0)
{
$image _p = Imagecreatetruecolor (40, 40);

$image = Imagecreatefromjpeg ($avatarPath. " /temp.jpg ");

Imagecopyresampled ($image _p, $image, 0, 0, $_post[' x '], $_post[' y '], max,, $_post[' W '], $_post[' h ']);

Imagejpeg ($image _p, $avatarPath. " /40_40.jpg ", 100);

Imagedestroy ($image _p);

Imagedestroy ($image);

Unlink ($avatarPath. " /temp.jpg ");

echo "1";
}
}

if (Isset ($_post[' Avatar ')) && $_post[' avatar '] = = "Delete")
{
if (File_exists ($avatarPath. " /temp.jpg "))
{
Unlink ($avatarPath. " /temp.jpg ");
}
}
}

Ob_end_flush ();

http://www.bkjia.com/PHPjc/444998.html www.bkjia.com true http://www.bkjia.com/PHPjc/444998.html techarticle PHP uploads the file and generates the thumbnail code if (isset ($_files[' upimg ')) {if ($userGroup [$LOGINARR [' Group ']][' upload '] = = 0) {echo ' {error: You The user group is not authorized to upload pictures!...

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