PHP Imagick getImageProperties()用法及代码示例

Imagick::getImageProperties()函数是PHP中的一个内置函数，用于获取图像属性。

用法:

array Imagick::getImageProperties( string $pattern, string $includes_values )

参数：该函数接受上述和以下描述的两个参数：

• $pattern:它指定属性名称的模式。默认值为*，它将返回所有属性。
• $includes_values:它指定是否仅返回属性名称。其默认值为TRUE。如果为FALSE，则仅返回属性名称。

返回值：此函数返回一个数组，其中包含图像属性或仅包含属性名称。

以下示例程序旨在说明PHP中的Imagick::getImageProperties()函数：

程序1:

<?php 
  
// Create a new imagick object 
$imagick = new Imagick( 
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png'); 
  
// Set the Image Properties 
$imagick->setImageProperty('property1', 'value1'); 
$imagick->setImageProperty('property2', 'value2'); 
$imagick->setImageProperty('hello', 'world'); 
  
// Get the Image Profiles without values starting from "pro" 
$properties = $imagick->getImageProperties("pro*", false); 
print("<pre>".print_r($properties, true)."</pre>"); 
?>

输出：

Array
(
    [0] => property1
    [1] => property2
)

程序2:

<?php 
  
// Create a new imagick object 
$imagick = new Imagick( 
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png'); 
  
// Set the Image Properties 
$imagick->setImageProperty('property1', 'value1'); 
$imagick->setImageProperty('property2', 'value2'); 
  
// Get the Image Profiles 
$properties = $imagick->getImageProperties("*"); 
print("<pre>".print_r($properties, true)."</pre>"); 
?>

输出：

Array
(
    [date:create] => 2019-11-21T22:32:52+05:00
    [date:modify] => 2019-11-21T22:32:52+05:00
    [png:cHRM] => chunk was found (see Chromaticity, above)
    [png:gAMA] => gamma=0.45455 (See Gamma, above)
    [png:IHDR.bit-depth-orig] => 8
    [png:IHDR.bit_depth] => 8
    [png:IHDR.color-type-orig] => 6
    [png:IHDR.color_type] => 6 (RGBA)
    [png:IHDR.interlace_method] => 0 (Not interlaced)
    [png:IHDR.width, height] => 667, 184
    [png:pHYs] => x_res=3780, y_res=3780, units=1
    [png:sRGB] => intent=0 (Perceptual Intent)
    [png:text] => 1 tEXt/zTXt/iTXt chunks were found
    [property1] => value1
    [property2] => value2
    [Software] => Adobe ImageReady
)

参考： https://www.php.net/manual/en/imagick.getimageproperties.php