GD knihovana ( ImageCreateTrueColor )

hosting může omezit prostředky a větší obrázky samozdřejmě chtějí více výkonu

<input type="hidden" value="<?=$MAX_SIZE?>" name="MAX_FILE_SIZE"/>
$file = array();
$file = isset($_FILES[$a])?$_FILES[$a]: (isset($HTTP_POST_FILES[$a])?$HTTP_POST_FILES[$a]:"");
$fileOk = fileCheck($file);
if ($fileOk===1)
{
$photo1 = $file['tmp_name'];
$size1 = $file['size'];
$type1 = $FILE_MIMES[$file['type']];
...
}

<?php
$FILE_MIMES = array('image/pjpeg'=>"jpg",'image/jpeg'=>"jpg",'image/jpg'=>"jpg",'ima ge/png'=>"png",'image/x-png'=>"png",'image/gif'=>"gif",'image/bmp'=>"b mp");
$FILE_EXTS = array('.jpeg','.jpg','.png','.gif','.bmp');
$MAX_SIZE = 2097152; //asi 2M

//=== check file ===
function fileCheck($file)
{
global $FILE_MIMES,$FILE_EXTS,$MAX_SIZE;
$fileOK = 0;
if (is_array($file)) $fileOK = 33;
//name
if (is_array($file) && $file['name']!=="" && File_Exists($file['tmp_name']))
{
$fileOK = 2;
//size
if (is_uploaded_file($file['tmp_name']) && $file['size']<$MAX_SIZE)
{
$fileOK = 3;
$file_ext = strtolower(substr($file['name'],strrpos($file['name'],".")));
if (array_key_exists($file['type'],$FILE_MIMES) && in_array($file_ext,$FILE_EXTS) )
//type,ext
{
$fileOK = 1;
}
}
}
return $fileOK;
}

// === img transform ===
function PPimageTransform($photo1,$type1,$dim,$crop,$format,$methode,$photo2,$t ype2)
{
/*
need GD library (first PHP line: WIN dl("php_gd.dll"); UNIX dl("gd.so");
www.boutell.com/gd/
interval.cz/clanky/php-skript-pro-generovani-galerie-obrazku-2/
cz2.php.net/imagecopyresampled
cz2.php.net/GetImageSize
www.linuxsoft.cz/sw_detail.php?id_item=871
www.webtip.cz/art/wt_tech_php/liquid_ir.html
*/
$ok = 0;/*obrazek neumim zpracovat*/
if ($photo1!=="" && File_Exists($photo1))
{
if (!($crop>0 && $crop<5)) {$crop = 0;}
// get width, height
list($w,$h) = GetImageSize($photo1); //array = width, height, type (gif), (string) "height=x width=x"
$w = ($w<1)?1:$w;
$h = ($h<1)?1:$h;
$wh= $w/$h;

// set format
switch($format)
{
case '4/3': $format = 4/3; break;
default : $format = 1; break;
}

// set auto crop
if ($crop==0)
{
$z1 = $format- ($format-1)/2;
$z2 = $format+(1-$format-1)/2;
if ($wh>$z1) {$crop = 1;}
elseif ($wh<$z2) {$crop = 2;}
else {$crop = 3;}
}

// scale,nw,nh
if ($crop==4)
{
$a=$w>$h?$w:$h;
$scale=$dim/$a;
$nw=$w*$scale; $nw=($nw<1)?1:$nw;
$nh=$h*$scale; $nh=($nh<1)?1:$nh;
// crop
$d=array(0,0,floor($nw),floor($nh));
$s=array(0,0,$w,$h);
}
else
{
if ($crop==3) {$nw=1;$nh=1;}
elseif ($crop==2) {$nw=1/$format;$nh=1;}
elseif ($crop==1) {$nw=1;$nh=1/$format;}
$nw*=$dim; $nw=($nw<1)?1:$nw;
$nh*=$dim; $nh=($nh<1)?1:$nh;

$s1=$nw/$w;
$s2=$nh/$h;
$h1=$nh*$s1;
$w2=$nw*$s2;

$s1=($h1<=$nh)?$s1:0;
$s2=($w2<=$nw)?$s2:0;
$scale=($s1>$s2)?$s1:$s2;
$scale=($scale<=0)?1:$scale;

// crop
$d=array(0,0,floor($nw),floor($nh));
$x1=floor(($w-$d[2]/$scale)/2);$x1=$x1<0?0:$x1;
$y1=floor(($h-$d[3]/$scale)/2);$y1=$y1<0?0:$y1;
$s=array($x1,$y1,floor($w-2*$x1),floor($h-2*$y1));
}
//print_r($s);
//print_r($d);

// set type input/output
switch($type1)
{
case 'png': $x = "ImageCreateFromPNG"; $imgIn = function_exists($x) ? $x : -1; break;
case 'jpg': $x = "ImageCreateFromJPEG"; $imgIn = function_exists($x) ? $x : -1; break;
case 'gif': $x = "ImageCreateFromGIF"; $imgIn = function_exists($x) ? $x : -1; break;
case 'bmp': $x = "ImageCreateFromWBMP"; $imgIn = function_exists($x) ? $x : -1; break;
case 'xbm': $x = "ImageCreateFromXBM"; $imgIn = function_exists($x) ? $x : -1; break;
case 'xpm': $x = "ImageCreateFromXPM"; $imgIn = function_exists($x) ? $x : -1; break;
default: return FALSE; break;
}
if ($imgIn!=-1)
{
switch($type2)
{
case 'jpg': $x = "ImageJPEG"; $imgOut = function_exists($x) ? $x : -1; break;
case 'png': $x = "ImagePNG"; $imgOut = function_exists($x) ? $x : -1; break;
case 'gif': $x = "ImageGIF"; $imgOut = function_exists($x) ? $x : -1; break;
case 'bmp': $x = "ImageWBMP"; $imgOut = function_exists($x) ? $x : -1; break;
case 'xbm': $x = "ImageXBM"; $imgOut = function_exists($x) ? $x : -1; break;
default: return FALSE; break;
}

if ($imgOut!=-1)
{
// Content type
//header('Content-type: image/jpeg');
// Resample (d-destination, s-source)
if (@$image1 = $imgIn($photo1))
{
if ($methode==0)
{
$transf1 = ImageCreateTruecolor;
$transf2 = ImageCopyResampled;
}
else {
$transf1 = ImageCreate;
$transf2 = ImageCopyResized;
}
$image2 = $transf1($d[2],$d[3]);
$transf2($image2, $image1, $d[0],$d[1], $s[0],$s[1], $d[2],$d[3], $s[2],$s[3]);

// Output
if ($type2=='jpg' || $type2=='png')
{$imgOut($image2,$photo2,85);} // save image, jpg/png quality
else {$imgOut($image2,$photo2);} // save image

ImageDestroy($image2); // free mem image2
ImageDestroy($image1); // free mem image1
$ok = 1;
}
}
}
}
return $ok;
}

/*
's_imgDimension'=>array("rozmer",array(
"80",
"320",
"640",
"800"
)),
's_imgCrop' =>array("oriznuti",array(
"- auto -",
"na sirku",
"na vysku",
"ctverec",
"- zadne -"
)),
's_imgFormat' =>array("format",array(
"4/3",
"1/1"
)),
's_imgType' =>array("vystup",array(
"jpg",
"png",
"gif",
"bmp"
)),
's_imgMethode' =>array("metoda",array(
"resample",
"resize"
))
*/

Cyva
Cili ja to omezuji na 130k a typ JPG jinak obrazek transformuji pomoci transformace a to klidne i z 2M. Ze ti to omezuje hosting, a pravdepodobne jakykoliv soubor, za to ja nemuzu.