讓我們烤點甜餅（做餅圖）
成功地安裝了PHP地Shockwave Flash支援後,就可以用PHP建立Shockwave檔案了。學習的最好方法就是直接跳到程式去，所以下面就讓我們看看程式。第一個檔案包括怎樣使用類的範例程式碼，同時也顯示了如何將一個Flash檔案嵌入到HTML文檔中。
// include class needed for flash graph
include("class.pie.flash.php");
mysql_connect ("localhost", "root", "");
$query = "SELECT DISTINCT city_name, COUNT(city_id)
FROM city
GROUP BY city_name;";
$result = mysql_db_query ("hermes",$query);
while ($row = mysql_fetch_array ($result)) {
$city_counts[] = $row["COUNT(city_id)"];
$city_names[] = $row["city_name"];
}
mysql_free_result ($result);
// Instantiate new object
$graph = new flash_pie($city_counts, "city.swf");
// set graph title (should not exceed about 25 characters)
$graph->pie_title("City Results", 30);
// set graph legend
$graph->pie_legend($city_names);
// show graph
$graph->show();
// free resources
$graph->close();
?>
type="application/x-shockwave-flash" width=600 height=300>
class flash_pie {
// class variables
// setup some global colors
var $r_arr = array(0.1, 1, 0, 1, 0, 1, 0.388235294, 0.4, 0.388235294, 0.929411765);
var $g_arr = array(1, 0, 0, 1, 1, 0, 0.8, 0.4, 0.8, 0.439215686);
var $b_arr = array(0.25, 0, 1, 0, 1, 1, 1, 0.4, 1, 0.043137255);
var $percents;
function flash_pie($values, $this_file) { //begin constructor
// to write out code directly to browser, set content header and use "php://stdout"
//swf_openfile ("php://stdout", 700, 250, 30, 1, 1, 1);
//header("Content-type: application/x-shockwave-flash");
swf_openfile ($this_file, 1000, 450, 30, 1, 1, 1);
// set up viewport for flash movie
swf_ortho2 (-400, 300 , -90, 250);
// choose the font we will use for pie graph
swf_definefont(10, "Mod");
// get sum of array for percents/slices
while(list($key,$val) = each($values)) {
$sum = $sum + $val;
}
for ($i=0; $i // calculate how big they need to be and then
// draw all of our slices
if ($i == 0) {
// setup parameters for first slice
$begin = 0;
$val = $values[$i]/$sum;
$end = $val*360;
swf_translate(-200, 0, 0);
} else {
// setup parameters for every other slice
$begin = $end;
$val = $values[$i]/$sum;
$end = $end + $val*360;
}
// function call to add slice
$objID = 1+$i*10;
$this->show_slice($i, $objID, $begin, $end);
// put together percent array for all labels
$this->percents[$i] = round($values[$i]/$sum*100);
}
} //end flash_pie
function show_slice($i, $objID, $begin, $end) {
// draws a slice and places it in our frame
swf_addcolor($this->r_arr[$i], $this->g_arr[$i], $this->b_arr[$i], 1);
swf_startshape($objID);
swf_shapefillsolid(0, 0, 0, 1);
swf_shapearc(0, 0, 100, $begin, $end);
swf_shapecurveto(0, 0, 0, 0);
swf_endshape($objID);
swf_pushmatrix();
swf_placeobject($objID, 1);
swf_popmatrix();
swf_showframe();
}
function pie_legend($labels) {
// draws the legend and labels and places it in our frame
for ($i=0; $i swf_addcolor($this->r_arr[$i], $this->g_arr[$i], $this->b_arr[$i], 1);
swf_definerect($i+1000, 1, 0, 20, 20, 0);
if ($i == 0) {
swf_translate(120, 75, 0);
} else {
swf_translate(0, 20, 0);
}
swf_placeobject($i+1000, 1);
swf_translate(0, 5, 0);
unset($label);
$label = $labels[$i];
$label .= " (";
$label .= $this->percents[$i];
$label .= " percent)";
if ($i==0) {
$width = (swf_textwidth($label)/4)+30;
} else {
$width = round(swf_textwidth($label)/2)+30;
}
$this->pie_text($i-1000, "$label", 15, $width, 0);
swf_translate(-$width, 0, 0);
}
swf_translate($width, 30*count($labels), 0);
}
function pie_text($id, $text, $size, $x, $y) {
// simple function to draw text ($text) at ($x,$y) with font size ($size)
// set color of text to black
swf_addcolor(0,0,0,0);
// set font size and slant
swf_fontsize($size);
swf_fontslant(0);
// define, position and place text in frame
swf_definetext($id, "$text", 1);
swf_translate($x, $y, 0);
swf_placeobject($id, 1);
}
function pie_title($text, $size) {
// simple function to draw title and set lineup
// $text should not exceed about 25 characters
$this->pie_text(99, $text, $size, 0, 150);
swf_translate(0, -300, 0);
}
function show() {
// show the frame
swf_showframe();
}
function close() {
// flush our buffer and return movie
$data = swf_closefile(1);
}
} // end class flash_pie
?>
注意，你可以將產生的SWF檔案直接返回到瀏覽器中，而不必一定要像我一樣把它寫到一個檔案中。這可能對測試來說是有用的，但你可能很少用到一個Flash檔案，更多的時候你可能想把Flash檔案嵌入到HTML文檔中。如果你選擇直接把Flash檔案輸出到瀏覽器中，你可以如下設定header content 類型：
header("Content-type: application/x-shockwave-flash")
並把swf_openfile(filename",...)改成swf_openfile("php://stdout",...)
更多資訊的連結：
http://www.php.net/manual/ref.swf.php 關於swf_* PHP函數的說明
http://reality.sgi.com/grafica/flash/ 下載PHP的swf庫
http://openswf.org 更多Flash工具和資訊
http://www.macromedia.com/software/flash/open/licensing/
關於Macromedia Flash SDK的更多資訊
http://www.bkjia.com/PHPjc/315804.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/315804.htmlTechArticle讓我們烤點甜餅（做餅圖） 成功地安裝了PHP地Shockwave Flash支援後,就可以用PHP建立Shockwave檔案了。學習的最好方法就是直接跳到程式去，...
