如何获得$ _POST阵列按键的子集开头的preFIX [英] How to get a subset of $_POST array with keys starting with a prefix

问题描述

比方说我的 $ _ POST 变量如下：

 ＆LT; PHP排列
（
    [USER_ID] =＆GT; 65
    [动作] =＆GT; editpost
    [originalaction] =＆GT; editpost
    [post_author] =＆GT; 154
    [empl_bd_dd] =＆GT; 6
    [empl_bd_mm] =＆GT;五
    [empl_bd_yy] =＆GT; 1987年
    [empl_gen] =＆GT; 1
    [empl_height] =＆GT; 155
    [empl_weight] =＆GT; 61
    [empl_arra] =＆GT; 2
    [保存] =＆GT;更新
    [post_it] =＆GT; 2
    [empl_pay] =＆GT; J77
    [empl_cust] =＆GT;已婚
    [empl_lang] =＆GT;排列
        （
            [0] =＆GT; EN
            [1] =＆GT; FR
        ）
    [empl_rent] =＆GT; 1
    [名] =＆GT;吉米·内森
    [empl_text] =＆GT; Lorem存有悲坐阿梅德，consectetur adipiscing ELIT。 Donec sed的interdum狮子座。桑达等ELIT华富，tempor placerat预期值，也。 Nullam SAPIEN奥迪奥，egestas iaculis格言UT，congue ullamcorper得力士。
    [empl_sk_0] =＆GT; 6
    [empl_sk_1] =＆GT; 7
    [empl_sk_2] =＆GT;五
）？＆GT;
 

正如你可以看到我prefixed我所有的表单变量与 EMPL _ 。短指定所有逐一的，我如何才能从 $ _ POST 我所有的表单变量到一个数组中的最低成本有望优雅的方式呢？是否有一个PHP阵列功能或它们的组合，我可以用这个？

像 CSS 在这里你可以选择具有与开始EMPL 使用<$ C类的所有元素C> [*类=_ EMPL] ，是有办法，我可以在PHP中，如：

数组键做到这一点

  $ empl_post = $ _ POST ['empl_ *']
 

---

EDITED答案 - IMPT修正@克里斯的回答是： $ _ POST 有可能成为第一个参数 array_intersect_key ，例如：

  $ empl_POST = array_intersect_key（$ _ POST，array_flip（preg_grep（'/ ^ empl_ /'，array_keys（$ _ POST））））;
 

解决方案

  $ R = array_intersect_key（$ _ POST，array_flip（preg_grep（'/ ^ empl_ /'，array_keys（ $ _ POST））））;
 

<子>他们真正需要添加一个 preG_GREP_KEYS 标记，这样我们就不必做所有那些乱七八糟......

Let's say my $_POST variable looks like:

<?php

Array
(
    [user_ID] => 65
    [action] => editpost
    [originalaction] => editpost
    [post_author] => 154
    [empl_bd_dd] => 6
    [empl_bd_mm] => 5
    [empl_bd_yy] => 1987
    [empl_gen] => 1
    [empl_height] => 155
    [empl_weight] => 61
    [empl_arra] => 2
    [save] => Update
    [post_it] => 2
    [empl_pay] => J77
    [empl_cust] => Married
    [empl_lang] => Array
        (
            [0] => EN
            [1] => FR
        )
    [empl_rent] => 1
    [name] => Jimmy Nathan
    [empl_text] => Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec sed interdum leo. Sed et elit quam, tempor placerat neque. Nullam sapien odio, egestas iaculis dictum ut, congue ullamcorper tellus.
    [empl_sk_0] => 6
    [empl_sk_1] => 7
    [empl_sk_2] => 5
)

?>

As you can see I prefixed all my form variables with empl_. Short of having to specify all of them one by one, how do I get all my form variables from $_POST into an array in the least-cost hopefully elegant way? Is there a PHP array function or a combination of them that I can use for this?

Like in CSS where you can select all elements with a class that starts with empl using [class*="empl_"], is there a way I can do this with the array keys in PHP, e.g.

$empl_post = $_POST['empl_*']

---

EDITED ANSWER - impt correction to @chris 's answer: $_POST has to be the first argument to array_intersect_key, e.g.:

$empl_POST = array_intersect_key($_POST, array_flip(preg_grep('/^empl_/', array_keys($_POST))));

解决方案

$r = array_intersect_key($_POST, array_flip(preg_grep('/^empl_/', array_keys($_POST))));

_{they really need to add a PREG_GREP_KEYS flag so we don't have to do all that mess...}

这篇关于如何获得$ _POST阵列按键的子集开头的preFIX的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！