(PHP 4, PHP 5, PHP 7)
imagecolortransparent — 锟斤拷某锟斤拷锟斤拷色锟斤拷锟斤拷为透锟斤拷色
$image
[, int $color
] ) : int
imagecolortransparent() 锟斤拷
image 图锟斤拷锟叫碉拷透锟斤拷色锟借定为
color锟斤拷image
锟斤拷 imagecreatetruecolor()
锟斤拷锟截碉拷图锟斤拷锟绞讹拷锟斤拷锟�color
锟斤拷 imagecolorallocate() 锟斤拷锟截碉拷锟斤拷色锟斤拷识锟斤拷锟斤拷
Note:
透锟斤拷色锟斤拷图锟斤拷锟揭伙拷锟斤拷锟斤拷裕锟酵革拷锟斤拷炔锟斤拷锟斤拷锟缴拷锟斤拷锟斤拷浴锟揭伙拷锟斤拷瓒拷锟侥筹拷锟斤拷锟缴革拷锟缴拷锟酵硷拷锟斤拷锟街帮拷锟轿拷锟缴拷锟斤拷魏锟斤拷锟斤拷蚨汲锟轿革拷锟斤拷摹锟�
锟斤拷锟斤拷锟斤拷透锟斤拷色锟侥憋拷识锟斤拷锟斤拷锟斤拷锟绞★拷锟� color 锟津返回碉拷前透锟斤拷色锟侥憋拷识锟斤拷锟斤拷
Note:
透锟斤拷锟饺斤拷锟斤拷通锟斤拷 imagecopymerge() 锟斤拷锟斤拷锟缴硷拷窨奖锟斤拷锟斤拷锟斤拷锟斤拷锟� imagecopy() 锟斤拷锟缴拷锟酵硷拷锟�