0x01 常见的变量覆盖的函数
1.extract()将键值“So7cool" "Best" 赋值给 "a" "b" 通俗的讲,将对应的键值赋给对应的键名。
<?php $a = "So7cool"; $my_array = array("a" => "So7cool","b" => "Best"); extract($my_array); echo "\$a = $a \$b = $b" ?>
输出结果:$a = So7cool $b = Best
语法:extract(array,extract_rules,prefix)