GDlib? imagecopyresampled? ???? PNG ???? ??? ??
PHP? GDlib imagecopyresampled ??? ???? PNG ???? ??? ??? ? ???? ???? ?? ?????. ???? ?? ? ??? ?? ??? ???? ???? ????? ??? ?? ?? ????? ?? ??? ??? ????.
?? ??
?? PHP ?? ??? ?????.
$uploadTempFile = $myField[ 'tmp_name' ]
list( $uploadWidth, $uploadHeight, $uploadType )
= getimagesize( $uploadTempFile );
$srcImage = imagecreatefrompng( $uploadTempFile );
imagesavealpha( $targetImage, true );
$targetImage = imagecreatetruecolor( 128, 128 );
imagecopyresampled( $targetImage, $srcImage,
0, 0,
0, 0,
128, 128,
$uploadWidth, $uploadHeight );
imagepng( $targetImage, 'out.png', 9 );
? ??? ????? ???? PNG ???? ??? 128x128? ????? ?????. ??? ?? ???? ??? ??? ????? ?????. Imagesavealpha? true? ?????? ???? ???? ???? ????.
???
???? ???? ?? ??? ??? ????.
imagealphablending( $targetImage, false ); imagesavealpha( $targetImage, true );
imagealphablending? ???? false? ???? imageavealpha? true? ???? ?? ?? ??? ?? ???? ???? ?????.
?? ?? ??
??? ??? ??? ?? ?? ??? ??? ????.
$uploadTempFile = $myField[ 'tmp_name' ]
list( $uploadWidth, $uploadHeight, $uploadType )
= getimagesize( $uploadTempFile );
$srcImage = imagecreatefrompng( $uploadTempFile );
$targetImage = imagecreatetruecolor( 128, 128 );
imagealphablending( $targetImage, false );
imagesavealpha( $targetImage, true );
imagecopyresampled( $targetImage, $srcImage,
0, 0,
0, 0,
128, 128,
$uploadWidth, $uploadHeight );
imagepng( $targetImage, 'out.png', 9 );? ??? PHP? GDlib? PNG ??? ??? ??? ? ??? ???? ??? ? ?????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!
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PHP?? ?? ? ??? ????? ?????????
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?? PHP ?? ? ?? ??? ??? ?? ??? ??????
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PHP ? ???? ? ??? ? ??????
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TOSETTHERIGHTTIMEZONEINPHP, usedate_default_timezone_set () functionattStartOfyourscriptwitHavalidInlifiersuchas'America/new_york'.1.edate_default_timezone_set () beforeanydate/timeFunctions.2
