php

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*extract(array,extract_rules,prefix)
*/
$a = 'Original';
$my_array = array("a" => "Cat","b" => "Dog", "c" => "Horse");
extract($my_array);
echo "$a = $a; $b = $b; $c = $c";

*compact(var1,var2...)
*/
$firstname = "Peter";
$lastname = "Griffin";
$age = "38";

$name = array("firstname", "lastname");
$result = compact($name, "location", "age");

print_r($result);
//Array
//(
//[firstname] => Peter
//[lastname] => Griffin
//[age] => 38
//)

/**
     * 从数组中获取值填充模板字符串
     * @param $template string 模板字符串 
     *      $template = "商品名字是:{pname}"
     * @param $arr array 数组
     *      $arr = array(
                'pname'=>"surface book"
     *      )
     * @return mixed
     *      "商品名字是:surface book"
     */
    public static function ($template,$arr){
        return preg_replace_callback('/{(w+)}/',function ($value) use($arr){
            return empty($arr[$value[1]])?'':$arr[$value[1]];
        },$template);
    }