Problemer med resizing av bilder

Ståle · 21. mars 2008

Hei, har satt sammen dette.

function resize( $image, $file_type, $path, $image_type)
{

if( $image_type == "personal_picture" )
{
$newwidth = 200; 
$newheight = 300;
}
elseif( $image_type == "avatar" ) {
$newwidth = 80; 
$newheight = 80;
}


if($file_type == "image/pjpeg" || $file_type == "image/jpeg")
	$new_img = imagecreatefromjpeg($image);
elseif( $file_type == "image/x-png" || $file_type == "image/png" ) {
$png = 1;
	$new_img = imagecreatefrompng($image);
	}
elseif($file_type == "image/gif") {
$gif = 1;
	$new_img = imagecreatefromgif($image);
	}





list($width, $height) = getimagesize($image);

if( $width > $newwidth )
{
$img_ratio = $width/$newwidth;
$after_height = $height/$img_ratio;
if( $after_height > $newheight )
{
	$img_ratio = $after_height/$height;
	$after_width = $height/$img_ratio;
	if( $width > $newwidth )
	{
		$img_ratio = $width/$newwidth;
		$after_height = $height/$img_ratio;

	}
}
$newheight = (isset( $after_height ) ) ? $after_height : $newheight;
$newwidth = (isset( $after_width ) ) ? $after_width : $newwidth;

echo '<br>'.$img_ratio;
echo '<br>'.$newheight;
echo '<br>'.$newwidth;
}
elseif( $height > $newheight )
{
$img_ratio = $height/$newheight;
$after_width = $width/$img_ratio;
if( $after_width > $newwidth )
{
	$img_ratio = $after_width/$width;
	$after_height = $width/$img_ratio;
	if( $height > $newheight )
	{
		$img_ratio = $height/$newheight;
		$after_width = $width/$img_ratio;

	}
}
$newheight = (isset( $after_height ) ) ? $after_height : $newheight;
$newwidth = (isset( $after_width ) ) ? $after_width : $newwidth;

}


else
{
$newwidth = $width;
$newheight = $height;
}

if( function_exists( imagecreatetruecolor ) )
	$resized_img = imagecreatetruecolor($newwidth,$newheight);
else
	die("Error: Please make sure you have GD library ver 2+");

imagecopyresampled($resized_img, $new_img, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
ImageJpeg ($resized_img,$path);

$image = $new_img;
$new_img = $resized_img;
/**
* Try to preserve transparency info
* $orig_type - Original Image Type
* $orig_img  - GD Image Resource for original image
* $new_img   - GD Image Resource for resized image
*/

// Transparency only available for GIFs & PNGs
if ($gif || $png ) {
$trnprt_indx = imagecolortransparent($image);

// If we have a specific transparent color
if ($trnprt_indx >= 0) {

	// Get the original image's transparent color's RGB values
	$trnprt_color	= imagecolorsforindex($image, $trnprt_indx);

	// Allocate the same color in the new image resource
	$trnprt_indx	= imagecolorallocate($new_img, $trnprt_color['red'], $trnprt_color['green'], $trnprt_color['blue']);

	// Completely fill the background of the new image with allocated color.
	imagefill($new_img, 0, 0, $trnprt_indx);

	// Set the background color for new image to transparent
	imagecolortransparent($new_img, $trnprt_indx);

// Always make a transparent background color for PNGs that don't have one allocated already
} elseif ($png) {

	// Turn off transparency blending (temporarily)
	imagealphablending($new_img, false);

	// Create a new transparent color for image
	$color = imagecolorallocatealpha($new_img, 0, 0, 0, 127);

	// Completely fill the background of the new image with allocated color.
	imagefill($new_img, 0, 0, $color);

	// Restore transparency blending
	imagesavealpha($new_img, true);
}
}


ImageDestroy ($image);
ImageDestroy ($new_img);
}

men det blir bare feil. Feil storrelse pa bildene, og ikke gjennomsiktig.

Endret 21. mars 2008 av Ståle

Ståle · 22. mars 2008

Ingen?

Mats Danielsen · 23. mars 2008

Hvilket format av bilde bruker du?

23. mars 2008

For min del ser det ut som om at du kjører imagejpeg()-funksjonen før du endrer på noen transparency-properties

Ståle · 23. mars 2008

mja, det var ogsa noe ja.

function resize( $image, $file_type, $path, $image_type)
{

if( $image_type == "personal_picture" )
{
$newwidth = 200; 
$newheight = 300;
}
elseif( $image_type == "avatar" ) {
$newwidth = 80; 
$newheight = 80;
}


if($file_type == "image/pjpeg" || $file_type == "image/jpeg")
{
	$jpg = 1;
	$new_img = imagecreatefromjpeg($image);
}
elseif( $file_type == "image/x-png" || $file_type == "image/png" )
{
	$png = 1;
	$new_img = imagecreatefrompng($image);
}
elseif($file_type == "image/gif")
{
	$gif = 1;
	$new_img = imagecreatefromgif($image);
}





list($width, $height) = getimagesize($image);

if( $width > $newwidth )
{
$img_ratio = $width/$newwidth;
$after_height = $height/$img_ratio;
if( $after_height > $newheight )
{
	$img_ratio = $after_height/$height;
	$after_width = $height/$img_ratio;
	if( $width > $newwidth )
	{
		$img_ratio = $width/$newwidth;
		$after_height = $height/$img_ratio;

	}
}
$newheight = (isset( $after_height ) ) ? $after_height : $newheight;
$newwidth = (isset( $after_width ) ) ? $after_width : $newwidth;

echo '<br>'.$img_ratio;
echo '<br>'.$newheight;
echo '<br>'.$newwidth;
}
elseif( $height > $newheight )
{
$img_ratio = $height/$newheight;
$after_width = $width/$img_ratio;
if( $after_width > $newwidth )
{
	$img_ratio = $after_width/$width;
	$after_height = $width/$img_ratio;
	if( $height > $newheight )
	{
		$img_ratio = $height/$newheight;
		$after_width = $width/$img_ratio;

	}
}
$newheight = (isset( $after_height ) ) ? $after_height : $newheight;
$newwidth = (isset( $after_width ) ) ? $after_width : $newwidth;

}


else
{
$newwidth = $width;
$newheight = $height;
}

if( function_exists( imagecreatetruecolor ) )
	$resized_img = imagecreatetruecolor($newwidth,$newheight);
else
	die("Error: Please make sure you have GD library ver 2+");

imagecopyresampled($resized_img, $new_img, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);

$image = $new_img;
$new_img = $resized_img;
/**
* Try to preserve transparency info
* $orig_type - Original Image Type
* $orig_img  - GD Image Resource for original image
* $new_img   - GD Image Resource for resized image
*/

// Transparency only available for GIFs & PNGs
if ($gif || $png ) {
$trnprt_indx = imagecolortransparent($image);

// If we have a specific transparent color
if ($trnprt_indx >= 0) {

	// Get the original image's transparent color's RGB values
	$trnprt_color	= imagecolorsforindex($image, $trnprt_indx);

	// Allocate the same color in the new image resource
	$trnprt_indx	= imagecolorallocate($new_img, $trnprt_color['red'], $trnprt_color['green'], $trnprt_color['blue']);

	// Completely fill the background of the new image with allocated color.
	imagefill($new_img, 0, 0, $trnprt_indx);

	// Set the background color for new image to transparent
	imagecolortransparent($new_img, $trnprt_indx);

// Always make a transparent background color for PNGs that don't have one allocated already
} elseif ($png) {

	// Turn off transparency blending (temporarily)
	imagealphablending($new_img, false);

	// Create a new transparent color for image
	$color = imagecolorallocatealpha($new_img, 0, 0, 0, 127);

	// Completely fill the background of the new image with allocated color.
	imagefill($new_img, 0, 0, $color);

	// Restore transparency blending
	imagesavealpha($new_img, true);
}
}

if( $jpg )
ImageJpeg ($new_image,$path);
if( $gif)
Imagegif ($new_image,$path);
if( $png )
Imagepng ($new_image,$path);

ImageDestroy ($image);
ImageDestroy ($new_img);
}

men na far jeg feil

Warning: imagepng(): supplied argument is not a valid Image resource in resize.php on line 630

Ståle · 24. mars 2008

Har endret en del pa det na

function resize( $image, $file_type, $path, $image_type)
{

if( $image_type == "personal_picture" )
{
$newwidth = 200; 
$newheight = 300;
}
elseif( $image_type == "avatar" ) {
$newwidth = 80; 
$newheight = 80;
}


if($file_type == "image/pjpeg" || $file_type == "image/jpeg" || $file_type == "application/octet-stream")
{
	$jpg = 1;
	$new_img = imagecreatefromjpeg($image);
}
elseif( $file_type == "image/x-png" || $file_type == "image/png" )
{
	$png = 1;
	$new_img = imagecreatefrompng($image);
}
elseif($file_type == "image/gif")
{
	$gif = 1;
	$new_img = imagecreatefromgif($image);
}





list($width, $height) = getimagesize($image);


if( $width > $newwidth )
{
$img_ratio = $width/$newwidth;
$after_height = $height/$img_ratio;

echo $newwidth;
echo '<br>';
echo $newheight;
echo '<br>';
$newheight = (isset( $after_height ) ) ? $after_height : $newheight;
$newwidth = (isset( $after_width ) ) ? $after_width : $newwidth;

echo $newwidth;
echo '<br>';
echo $newheight;
echo '<br>';
}
/*if( $after_height > $newheight )
{
	$img_ratio = $after_height/$height;
	$after_width = $height/$img_ratio;
	if( $width > $newwidth )
	{
		$img_ratio = $width/$newwidth;
		$after_height = $height/$img_ratio;

	}
}

echo '<br>'.$img_ratio;
echo '<br>'.$newheight;
echo '<br>'.$newwidth;
}
elseif( $height > $newheight )
{
$img_ratio = $height/$newheight;
$after_width = $width/$img_ratio;
if( $after_width > $newwidth )
{
	$img_ratio = $after_width/$width;
	$after_height = $width/$img_ratio;
	if( $height > $newheight )
	{
		$img_ratio = $height/$newheight;
		$after_width = $width/$img_ratio;

	}
}
$newheight = (isset( $after_height ) ) ? $after_height : $newheight;
$newwidth = (isset( $after_width ) ) ? $after_width : $newwidth;

}
*/


if( function_exists( imagecreatetruecolor ) )
	$resized_img = imagecreatetruecolor($newwidth,$newheight);
else
	die("Error: Please make sure you have GD library ver 2+");

imagecopyresampled($resized_img, $new_img, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);

$image = $new_img;
$new_img = $resized_img;
/**
* Try to preserve transparency info
* $orig_type - Original Image Type
* $orig_img  - GD Image Resource for original image
* $new_img   - GD Image Resource for resized image
*/

// Transparency only available for GIFs & PNGs
if ($gif || $png ) {
$trnprt_indx = imagecolortransparent($image);

// If we have a specific transparent color
if ($trnprt_indx >= 0) {

	// Get the original image's transparent color's RGB values
	$trnprt_color	= imagecolorsforindex($image, $trnprt_indx);

	// Allocate the same color in the new image resource
	$trnprt_indx	= imagecolorallocate($new_img, $trnprt_color['red'], $trnprt_color['green'], $trnprt_color['blue']);

	// Completely fill the background of the new image with allocated color.
	imagefill($new_img, 0, 0, $trnprt_indx);

	// Set the background color for new image to transparent
	imagecolortransparent($new_img, $trnprt_indx);

// Always make a transparent background color for PNGs that don't have one allocated already
} elseif ($png) {

	// Turn off transparency blending (temporarily)
	imagealphablending($new_img, false);

	// Create a new transparent color for image
	$color = imagecolorallocatealpha($new_img, 0, 0, 0, 127);

	// Completely fill the background of the new image with allocated color.
	imagefill($new_img, 0, 0, $color);

	// Restore transparency blending
	imagesavealpha($new_img, true);
}
}

/*
if( $jpg )
ImageJpeg ($new_image,$path, 100);
if( $gif)
Imagegif ($new_image,$path);
if( $png )
Imagepng ($new_image,$path);
ImageDestroy ($image);
ImageDestroy ($new_img);
*/
}

Outputten viser at det er riktig bredde og hoyde

80

137.049180328

men na blir ikke bildet resized i det hele tatt. :s

RipeX · 25. mars 2008

Har du sjekket at det ikke er noe med cache'en til nettleseren din? At den "husker" det gamle bildet ditt (det som du lastet opp før med samme navn), tror jeg var borti noe slikt for en stund siden.

Ståle · 25. mars 2008

Er nok ikke det.

Jeg fikk det faktisk til na

function resize( $orig_image, $file_type, $path, $image_type)
{

if( $image_type == "personal_picture" )
{
$pre_width = 200; 
$pre_height = 300;
}
elseif( $image_type == "avatar" ) {
$pre_width = 80; 
$pre_height = 80;
}


if($file_type == "image/pjpeg" || $file_type == "image/jpeg" || $file_type == "application/octet-stream")
{
	$jpg = 1;
	$image = imagecreatefromjpeg($orig_image);
}
elseif( $file_type == "image/x-png" || $file_type == "image/png" )
{
	$png = 1;
	$image = imagecreatefrompng($orig_image);
}
elseif($file_type == "image/gif")
{
	$gif = 1;
	$image = imagecreatefromgif($orig_image);
}





list($width, $height) = getimagesize($orig_image);


if( $width > $pre_width || $height > $pre_height ) {

if( $width > $pre_width )
{
$img_ratio = $width/$pre_width;
$after_height = ceil( $height/$img_ratio);

$newheight = (isset( $after_height ) ) ? $after_height : $pre_height;
$newwidth = (isset( $after_width ) ) ? $after_width : $pre_width;


if( $newheight > $pre_height )
{
$img_ratio = $newheight/$pre_height;
$after_width = ceil( $newwidth/$img_ratio );
$after_height = ceil( $newheight/$img_ratio );

$newheight = (isset( $after_height ) ) ? $after_height : $pre_height;
$newwidth = (isset( $after_width ) ) ? $after_width : $pre_width;

}

}


elseif( $height > $pre_height && !isset( $newheight ) )
{
$img_ratio = $height/$pre_height;
$after_width = $width/$img_ratio;


$newheight = (isset( $after_height ) ) ? $after_height : $pre_height;
$newwidth = (isset( $after_width ) ) ? $after_width : $pre_width;

if( $newwidth > $pre_width )
{
$img_ratio = $newwidth/$pre_width;
$after_height = $newheight/$img_ratio;
$after_width = $newwidth/$img_ratio;

$newheight = (isset( $after_height ) ) ? $after_height : $pre_height;
$newwidth = (isset( $after_width ) ) ? $after_width : $pre_width;

}

}





if( function_exists( imagecreatetruecolor ) )
	$resized_img = imagecreatetruecolor($newwidth,$newheight);
else
	die("Error: Please make sure you have GD library ver 2+");

/**
* Try to preserve transparency info
* $orig_type - Original Image Type
* $orig_img  - GD Image Resource for original image
* $new_img   - GD Image Resource for resized image
*/

// Transparency only available for GIFs & PNGs
if ($gif || $png ) {
$trnprt_indx = imagecolortransparent($image);

// If we have a specific transparent color
if ($trnprt_indx >= 0) {

	// Get the original image's transparent color's RGB values
	$trnprt_color	= imagecolorsforindex($image, $trnprt_indx);

	// Allocate the same color in the new image resource
	$trnprt_indx	= imagecolorallocate($resized_img, $trnprt_color['red'], $trnprt_color['green'], $trnprt_color['blue']);

	// Completely fill the background of the new image with allocated color.
	imagefill($resized_img, 0, 0, $trnprt_indx);

	// Set the background color for new image to transparent
	imagecolortransparent($resized_img, $trnprt_indx);

// Always make a transparent background color for PNGs that don't have one allocated already
} elseif ($png) {

	// Turn off transparency blending (temporarily)
	imagealphablending($resized_img, false);

	// Create a new transparent color for image
	$color = imagecolorallocatealpha($resized_img, 0, 0, 0, 127);

	// Completely fill the background of the new image with allocated color.
	imagefill($resized_img, 0, 0, $color);

	// Restore transparency blending
	imagesavealpha($resized_img, true);
}
}

imagecopyresampled($resized_img, $image, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);

if( $jpg )
ImageJpeg ($resized_img,$path, 100);
if( $gif)
Imagegif ($resized_img,$path);
if( $png )
Imagepng ($resized_img,$path);
ImageDestroy ($image);
ImageDestroy ($resized_img);

}
}

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Problemer med resizing av bilder

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Ståle

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Mats Danielsen

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Gjest Slettet+142

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