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php-manual-zh-5.2.4-1mdv2008.1.noarch.rpm

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>imagecopymergegray</H1
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><P
>    (PHP 4 &#62;= 4.0.6, PHP 5)</P
>imagecopymergegray&nbsp;--&nbsp;用灰度拷贝并合并图像的一部分</DIV
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CLASS="refsect1"
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NAME="AEN87666"
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><H2
>说明</H2
>bool <B
CLASS="methodname"
>imagecopymergegray</B
> ( resource dst_im, resource src_im, int dst_x, int dst_y, int src_x, int src_y, int src_w, int src_h, int pct )<BR
></BR
><P
>&#13;    将 <CODE
CLASS="parameter"
>src_im</CODE
> 图像中坐标从
    <CODE
CLASS="parameter"
>src_x</CODE
>,<CODE
CLASS="parameter"
>src_y </CODE
>
    开始,宽度为 <CODE
CLASS="parameter"
>src_w</CODE
>,高度为 <CODE
CLASS="parameter"
>src_h</CODE
>
    的一部分拷贝到
    <CODE
CLASS="parameter"
>dst_im</CODE
> 图像中坐标为
    <CODE
CLASS="parameter"
>dst_x</CODE
> 和 <CODE
CLASS="parameter"
>dst_y</CODE
>
    的位置上。两图像将根据 <CODE
CLASS="parameter"
>pct</CODE
>
    来决定合并程度,其值范围从 0 到 100。当 <CODE
CLASS="parameter"
>pct</CODE
> = 0
    时,实际上什么也没做,当为 100 时本函数和 <A
HREF="function.imagecopy.html"
><B
CLASS="function"
>imagecopy()</B
></A
> 完全一样。
   </P
><P
>&#13;    本函数和 <A
HREF="function.imagecopymerge.html"
><B
CLASS="function"
>imagecopymerge()</B
></A
>
    完全一样只除了合并时通过在拷贝操作前将目标像素转换为灰度级来保留了原色度。
   </P
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>注意: </B
>
     本函数添加于 PHP 4.0.6。
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