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How to use imageline in php gd?

WBOY
WBOYOriginal
2016-10-17 09:29:591089browse

I don’t understand the four coordinates of imageline. I’ve read the official documents and I don’t understand either. Can someone please help explain it

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I don’t understand the four coordinates of imageline. I’ve read the official documents and I don’t understand either. Can someone please help explain it

Have you never learned about coordinate axes?

The two points of the coordinate axis are connected to form a straight line. The coordinates of the two points are an x ​​and y coordinate, which represent the horizontal and vertical positions respectively. The two points add up to 4 coordinates

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