Imagick::setImageResolution

(PECL imagick 2.0.0)

Imagick::setImageResolution — Sets the image resolution

说明

bool Imagick::setImageResolution ( float $x_resolution , float $y_resolution )

Sets the image resolution.

参数

x_resolution
y_resolution

返回值

成功时返回 TRUE 。

错误／异常

错误时抛出 ImagickException。

范例

Example #1 Imagick::setImageResolution()

  <?php
 function  setImageResolution ( $imagePath ) {
     $imagick  = new \ Imagick ( realpath ( $imagePath ));
     $imagick -> setImageResolution ( 50 ,  50 );
    
     header ( "Content-Type: image/jpg" );
    echo  $imagick -> getImageBlob ();
}

 ?>

用户评论:

[#1] craig dot fairhurst at nospamyouds dot com [2010-02-12 10:12:10]

Note that any changes to the resolution (-density option) must be made before specifying the file, so construct the object with no file path and then use $object->readImage('path/to/file'); otherwise the density won't change.
Also see Imagick::setResolution.

[#2] octave at web dot de [2009-07-17 09:27:14]

This method uses the ImageMagick "-density {$x_resolution}x{$y_resolution}" parameter