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<?php
//定义变量
$red = "红色";
$green = "绿色";
$yellow = "黄色";
$blue = "蓝色";
$array = array(1,2,3,4);
echo "使用compact()函数新建数组,并把参数做为新数组的单元:";
$newArray = compact("red","green","yellow","blue","array");
//显示新数组
print_r($newArray);
//定义一个数组
$exArray = array("key1"=>1,"key2"=>2,"key3"=>3,"key4"=>4,"key5"=>5);
echo "<br><br>使用extract()函数把数组中的单元转换为变量:";
extract($exArray);
echo "$key1 $key2 $key3 $key4 $key5";
?>