Imagecopyresized (destsrcdxdysxsyDWDH SWsh);
Imagecopyresampled (destsrcdxdysxsyDW dhSWSH
<?php
$src=Imagecreatefromjpeg(' Php.jpg ');
$width=Imagesx($src);
$height=Imagesy($src);
$x=$width/2; $y = $height / 2 ;
$dst = imagecreatetruecolor ( $x , $y );
imagecopyresized ( $dst , $src , 0 , 0 , 0 , 0 , $x , $y , $width , $height );
//imagecopyresampled ($DST, $SRC, 0,0,0,0, $x, $y, $width, $height);
header ( ' content-type: image/jpeg ' );
imagejpeg ( $dst , "" );
?>
Artwork:
using
ImageCopyResized()函数生成的结果：
使用ImageCopyResampled()函数生成的结果：
ImageCopyResampled()函数生成的结果比较平滑，效果较好。
By the way, you put an effect in ASCII to represent the image. Imagecolorat () has a very interesting use, it can be cycled check
The color of each pixel in the image, and then manipulate the color data.
Source:
<body bgcolor= "#000000" style= "line-height:6pt" > <?php
$im = imagecreatefromjpeg(' test1.jpg ' ));
$dx = imagesx($im );
$dy = imagesy($im );
For ($y = 0; $y < $dy; $y ++) {
For ($x=0; $x < $dx; $x ++) {
$col = imagecolorat($im, $x, $y );
$rgb = imagecolorsforindex($im,$col );
printf(' <font color=#%02x%02x%02x>*</font> ' ,
$rgb[' Red '],$rgb['Green '],$rgb['blue ' ] ]);
}
echo "<br>\n" ;
}
Imagedestroy($im );
?>
</body>
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