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本文檔使用 php中文網手册 發布
(PECL imagick 2.0.0)
Imagick::hasPreviousImage — Checks if the object has a previous image
Returns TRUE
if the object has more images when traversing the list in the reverse direction
Returns TRUE
if the object has more images when traversing the list in the
reverse direction, returns FALSE
if there are none.