简单教程
提交运行
代码编辑器：
<?php $a = "Original"; $my_array = array("a" => "Cat", "b" => "Dog", "c" => "Horse"); extract($my_array, EXTR_PREFIX_SAME, "dup"); echo "$a = $a; $b = $b; $c = $c; $dup_a = $dup_a";?>
运行结果：