Imagick::pingImageBlob()
(PECL imagick 2.0.0)
Quickly fetch attributes
说明
Imagick::pingImageBlob(string $image): bool
This method can be used to query image width, height, size, and format without reading the whole image to memory.此方法在Imagick基于ImageMagick 6.2.9以上版本编译时可用。
参数
- $image
A string containing the image.
返回值
成功时返回TRUE
。
范例
Example #1 Using Imagick::pingImageBlob()
Pinging an image from a string
<?php /* read image contents */ $image = file_get_contents("test.jpg"); /* create new imagick object */ $im = new Imagick(); /* pass the string to the imagick object */ $im->pingImageBlob($image); /* output image width and height */ echo $im->getImageWidth() . 'x' . $im->getImageHeight(); ?>
参见
- Imagick::pingImage() Fetch basic attributes about the image
- Imagick::pingImageFile() Get basic image attributes in a lightweight manner
- Imagick::readImage() Reads image from filename
- Imagick::readImageBlob() 从二进制字符串里读取图片
- Imagick::readImageFile() Reads image from open filehandle