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 cpdf_rect    (PHP 3>= 3.0.8, PHP 4 ) cpdf_rect -- Draw a rectangleDescriptionbool cpdf_rect  ( int pdf_document, float x-coor, float y-coor, float width, float height [, int mode]) 
     The cpdf_rect() function draws a rectangle with
     its lower left corner at point 
     (x-coor, y-coor).
     This width is set to width.
     This height is set to height. 如果成功则返回 TRUE,失败则返回 FALSE。
     可选参数 mode
决定单元的长度。如果为 0 或被省略则使用该页指定的默认单元。否则坐标忽略当前单元而使用
postscript 的点来度量。 
      | 例子 1. Drawing a rectangle | 
<?php
 $cpdf = cpdf_open(0);
 cpdf_page_init($cpdf, 1, 0, 595, 842, 1.0);
 
 // set the fill color to red
 cpdf_setrgbcolor($cpdf, 1, 0, 0);
 
 // draw a (180 * 100) rectangle
 cpdf_rect($cpdf, 645, 400, 180, 100);
 
 // fill the rectangle
 cpdf_fill($cpdf);
 
 cpdf_finalize($cpdf);
 Header("Content-type: application/pdf");
 cpdf_output_buffer($cpdf);
 cpdf_close($cpdf);
 
 ?>
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