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# cpdf_circle

(PHP 3 >= 3.0.8, PHP 4, PHP 5 <= 5.0.4)

cpdf_circle -- Draw a circle

## 说明

bool cpdf_circle ( int pdf_document, float x_coor, float y_coor, float radius [, int mode] )

Draws a circle.

## 参数

`pdf_document`

  The document handle, returned by cpdf_open().

`x_coor`

  The x-coordinate of the center

`y_coor`

  The y-coordinate of the center

`radius`

  The circle radius

`mode`

  The optional parameter `mode` determines the unit length. If it is 0 or omitted the default unit as specified for the page is used. Otherwise the coordinates are measured in postscript points disregarding the current unit.

## 返回值

如果成功则返回 `TRUE`，失败则返回 `FALSE`。

## 参见

cpdf_arc()

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