This function seems to do the same thing as photoshop feture convas size, you set size of convas and position of your image's top left corner (x,y) inside that convas.
(No version information available, might only be in Git)
Imagick::resetImagePage — Reset image page
$page
) : boolThe page definition as a string. The string is in format WxH+x+y. 此方法在Imagick基于ImageMagick 6.3.6以上版本编译时可用。
pageThe page definition. For example 7168x5147+0+0
成功时返回 TRUE。
This function seems to do the same thing as photoshop feture convas size, you set size of convas and position of your image's top left corner (x,y) inside that convas.