在PHP中循环一个字符串并转换为$_POST - Loop through a string and convert to $_POST in PHP

Loop through a string and convert to $_POST in PHP

我有这个代码：

$string = "prItem1,prItem2,prItem3"; // could contains more
$itemarray = explode(',', $string);
            foreach($itemarray as $var)
            {
                //echo $var."<br/>";
            // HERE I want "convert" any found prItem ($var) to a handle
            // that give me something like that: 
            // $prItem1 = $_POST['prItem1'];
            // $prItem2 = $_POST['prItem2'];
            // ...
            }

正如我在代码注释中所写的那样：每个prItem都是一个输入字段，我想获得$_POST-Vars。

有人知道我该怎么做吗？或者有没有更好的方法呢？

$string = "prItem1,prItem2,prItem3"; // could contains more
$itemarray = explode(',', $string);
$posts = array();
        //remove empty elements from $itemarray
        foreach(array_filter($itemarray) as $var) 
            {
              if(isset($_POST[$var])) {
                   $posts[$var] = $_POST[$var];
                   }
            }
print_r($posts);

您可能想尝试一种基于对象的方法，比如：

    <?php
        $string     = "prItem1,prItem2,prItem3"; // could contains more
        $itemArray  = explode(',', $string);
        // INSTANTIATE A NEW NATIVE PHP OBJECT TO HOLD YOUR DATA...
        $objItems   = new stdClass();
        // LOOP THROUGH THE $itemArray:
        foreach($itemArray as $var){
            // CREATE INDIVIDUAL KEYS MATCHING UP TO THE DESIRED KEYS AS IN: prItem1, prItem2, etc...
            $key    = $var;
            // ASSIGN THE KEY TO THE OBJECT WHILE SETTING THE VALUE OF THIS OBJECT KEY TO THE POST VALUE...
            $objItems->$key = $_POST[$var];
            // ... MORE LOGIC FOLLOWS...
        }
        // ACCESS YOUR ITEMS LIKE SO...
        //$objItems->prItem1
        var_dump($objItems->prItem1);

这是另一个变体；这次使用数组：

    <?php
        $string     = "prItem1,prItem2,prItem3"; // could contains more
        $itemArray  = explode(',', $string);

        // INSTANTIATE A NEW ARRAY TO HOLD YOUR DATA...
        $arrItems   = array();
        // LOOP THROUGH THE $itemArray:
        foreach($itemArray as $var){
            // CREATE INDIVIDUAL KEYS MATCHING UP TO THE DESIRED KEYS AS IN: prItem1, prItem2, etc...
            $key            = $var;
            // ASSIGN THE KEY TO THE ARRAY WHILE SETTING THE VALUE OF THIS KEY TO THE POST VALUE...
            $arrItems[$key] = $_POST[$var];
            // ... MORE LOGIC FOLLOWS...
        }
        // EXTRACT EACH INDIVIDUAL ARRAY DATA INTO AN OWN VARIABLE
        extract($arrItems);

        // ACCESS YOUR VARIABLES DIRECTLY 
        // LIKE YOU WOULD A PREVIOUSLY DEFINED VARIABLE LIKE SO...
        var_dump($prItem1);

编辑：模拟任意后值-仅用于测试目的

<?php
    $POST       = array("prItem1"=>"Value of prItem1", "prItem2"=>"Value of prItem2", "prItem3"=>"Value of prItem3");
    $string     = "prItem1,prItem2,prItem3"; // could contains more
    $itemArray  = explode(',', $string);

    // INSTANTIATE A NEW ARRAY TO HOLD YOUR DATA...
    $arrItems   = array();
    // LOOP THROUGH THE $itemArray:
    foreach($itemArray as $var){
        // CREATE INDIVIDUAL KEYS MATCHING UP TO THE DESIRED KEYS AS IN: prItem1, prItem2, etc...
        $key            = $var;
        // ASSIGN THE KEY TO THE ARRAY WHILE SETTING THE VALUE OF THIS KEY TO THE POST VALUE...
        $arrItems[$key] = $POST[$var];
        // ... MORE LOGIC FOLLOWS...
    }
    // EXTRACT EACH INDIVIDUAL ARRAY DATA INTO AN OWN VARIABLE
    extract($arrItems);

    // ACCESS YOUR VARIABLES DIRECTLY
    // LIKE YOU WOULD A PREVIOUSLY DEFINED VARIABLE LIKE SO...
    var_dump($prItem1);
    var_dump($prItem2);
    var_dump($prItem3);

我希望这对你有用。。。。