GD Image resize functie
Auteur: Koen - 01 januari 2009 - 13:43 - Gekeurd door: Stijn - Hits: 8586 - Aantal punten: 5.00 (6 stemmen)
Uitleg
Met deze functie kan je gemakkelijk een afbeelding resizen zonder dat deze uitgerokken wordt.
Vergeet niet om het bestand voldoende chmod rechten te geven!
Veel plezier
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Code: |
<?php
/**
* ResizeImage
* @desc A function to easily resize images
*
* @author Koen <koen@sitemasters.be>
* @version 1.2
*
* @param string $sImage The image you would like to have resized
* @param int $iMaxWidth The maximum width [Optional, default: 600]
* @param int $iMaxHeight The maximum height [Optional, default: 600]
*
* @return False on failure, Array(name, mime, width, height) on succeed.
*
*
* Changelog:
* 10-01-2009
* Added support for "image/pjepg" mime type. (Internet Explorer uses this.)
* 24-01-2009
* Fastened script.
*/
function ResizeImage($sImage, $iMaxWidth=600, $iMaxHeight=600)
{
if($aSize = @getimagesize($sImage))
{
list($iOrigWidth, $iOrigHeight) = $aSize;
$sMimeType = $aSize['mime'];
$rResized = null;
switch($sMimeType)
{
case 'image/jpeg':
case 'image/pjpeg':
case 'image/jpg':
$rResized = imagecreatefromjpeg($sImage);
break;
case 'image/gif':
$rResized = imagecreatefromgif($sImage);
break;
case 'image/png':
case 'image/x-png':
$rResized = imagecreatefrompng($sImage);
break;
default:
return false;
}
if(isset($iOrigWidth, $iOrigHeight))
{
if($iOrigWidth <= $iMaxWidth && $iOrigHeight <= $iMaxHeight)
{
$iNewWidth = $iOrigWidth;
$iNewHeight = $iOrigHeight;
} else
{
$iOrigRatio = $iOrigWidth / $iOrigHeight;
if(($iMaxWidth/$iMaxHeight) > $iOrigRatio)
{
$iNewWidth = $iMaxHeight * $iOrigRatio;
$iNewHeight = $iMaxHeight;
} else
{
$iNewHeight = $iMaxWidth / $iOrigRatio;
$iNewWidth = $iMaxWidth;
}
}
$rResampledImage = imagecreatetruecolor($iNewWidth, $iNewHeight);
imagecopyresampled($rResampledImage, $rResized, 0, 0, 0, 0, $iNewWidth, $iNewHeight, $iOrigWidth, $iOrigHeight);
unlink($sImage);
switch($sMimeType)
{
case 'image/jpeg':
case 'image/pjpeg':
case 'image/jpg':
imagejpeg($rResampledImage, $sImage, 100);
break;
case 'image/gif':
imagegif($rResampledImage, $sImage);
break;
case 'image/png':
case 'image/x-png':
imagepng($rResampledImage, $sImage);
break;
default:
return false;
}
@chmod($sImage, 0777);
return array( "name" => $sImage,
"mime" => $sMimeType,
"width" => $iNewWidth,
"height" => $iNewHeight
);
} else
{
return false;
}
} else
{
return false;
}
}
// Voorbeeld:
echo '<pre>', print_r(resize('picture.png')), '</pre>';
// Return Value:
Array
(
[name] => picture.png
[mime] => image/png
[width] => 436
[height] => 600
)
?>
<?php /** * ResizeImage * @desc A function to easily resize images * * @author Koen <koen@sitemasters.be> * @version 1.2 * * @param string $sImage The image you would like to have resized * @param int $iMaxWidth The maximum width [Optional, default: 600] * @param int $iMaxHeight The maximum height [Optional, default: 600] * * @return False on failure, Array(name, mime, width, height) on succeed. * * * Changelog: * 10-01-2009 * Added support for "image/pjepg" mime type. (Internet Explorer uses this.) * 24-01-2009 * Fastened script. */ function ResizeImage($sImage, $iMaxWidth=600, $iMaxHeight=600) { { list($iOrigWidth, $iOrigHeight) = $aSize; $sMimeType = $aSize['mime']; $rResized = null; switch($sMimeType) { case 'image/jpeg': case 'image/pjpeg': case 'image/jpg': $rResized = imagecreatefromjpeg($sImage); break; case 'image/gif': $rResized = imagecreatefromgif($sImage); break; case 'image/png': case 'image/x-png': $rResized = imagecreatefrompng($sImage); break; default: return false; } if(isset($iOrigWidth, $iOrigHeight)) { if($iOrigWidth <= $iMaxWidth && $iOrigHeight <= $iMaxHeight) { $iNewWidth = $iOrigWidth; $iNewHeight = $iOrigHeight; } else { $iOrigRatio = $iOrigWidth / $iOrigHeight; if(($iMaxWidth/$iMaxHeight) > $iOrigRatio) { $iNewWidth = $iMaxHeight * $iOrigRatio; $iNewHeight = $iMaxHeight; } else { $iNewHeight = $iMaxWidth / $iOrigRatio; $iNewWidth = $iMaxWidth; } } $rResampledImage = imagecreatetruecolor($iNewWidth, $iNewHeight); imagecopyresampled($rResampledImage, $rResized, 0, 0, 0, 0, $iNewWidth, $iNewHeight, $iOrigWidth, $iOrigHeight); switch($sMimeType) { case 'image/jpeg': case 'image/pjpeg': case 'image/jpg': imagejpeg($rResampledImage, $sImage, 100); break; case 'image/gif': imagegif($rResampledImage, $sImage); break; case 'image/png': case 'image/x-png': imagepng($rResampledImage, $sImage); break; default: return false; } return array( "name" => $sImage, "mime" => $sMimeType, "width" => $iNewWidth, "height" => $iNewHeight ); } else { return false; } } else { return false; } } // Voorbeeld: echo '<pre>', print_r(resize ('picture.png')), '</pre>'; // Return Value: ( [name] => picture.png [mime] => image/png [width] => 436 [height] => 600 ) ?>
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