phpimagick完整安装
+php+%E4%B8%AD%E7%9A%84+Imagick%3A%3AgetImageIndex+%E6%80%8E%E4%B9%88%E7%94%A8%EF%BC%8C%E8%AF%B7%E8%AF%A6%E7%BB%86%E8%A7%A3%E9%87%8A%EF%BC%8C%E5%B9%B6%E5%86%99%E5%87%BA%E7%9B%B8%E5%BA%94%E7%9A%84%E4%BE%8B%E5%AD%90

The Imagick::getImageIndex function in PHP is used to retrieve the index of the current active image within the Imagick object. An Imagick object can contain multiple images, so this function allows you to determine the index of the currently selected image.

Here is an example to demonstrate its usage:

php
$image = new Imagick('path/to/image.jpg');

// Add multiple images to the Imagick object
$image->addimage($anotherImage);
$image->addimage($yetAnotherImage);

// Set the active image to the second image (index 1)
$image->setimageindex(1);

// Get the index of the current active image
$index = $image->getImageIndex();
echo "Current image index: " . $index;


In this example, we create an Imagick object from an image file. We then add two more images to the object using the addimage function. We then set the active image to the second image using the setimageindex function. Finally, we retrieve the index of the active image using getImageIndex and display it.

Note that the index is zero-based, so the first image has an index of 0, the second image has an index of 1, and so on.