如何获取 $_POST 的函数值答案

【问题标题】：How do get a function value to $_POST如何获取 $_POST 的函数值
【发布时间】：2012-08-12 13:25:09
【问题描述】：

所以我试图让这个函数作为表单的状态下拉选择来给我在另一个文件中使用 $_POST 提交时选择的值，事情是我真的不知道当你使用时如何'name=' 传入的参数。

这是我的代码

<?php
    function state_select ($name,$full_state,$selected = '') {

  $state_list = array("AL|Alabama","AK|Alaska","AZ|Arizona", "AR|Arkansas", "CA|California", "CO|Colorado", "CT|Connecticut", "DE|Delaware", "DC|Washington D.C.", "FL|Florida", "GA|Georgia", "HI|Hawaii", "ID|Idaho", "IL|Illinois", "IN|Indiana", "IA|Iowa", "KS|Kansas", "KY|Kentucky", "LA|Louisiana", "ME|Maine", "MD|Maryland", "MA|Massachusetts", "MI|Michigan", "MN|Minnesota", "MS|Mississippi", "MO|Missouri", "MT|Montana", "NE|Nebraska", "NV|Nevada", "NH|New Hampshire", "NJ|New Jersey", "NM|New Mexico", "NY|New York", "NC|North Carolina", "ND|North Dakota", "OH|Ohio", "OK|Oklahoma", "OR|Oregon", "PA|Pennsylvania", "RI|Rhode Island", "SC|South Carolina", "SD|South Dakota", "TN|Tennessee", "TX|Texas", "UT|Utah", "VT|Vermont", "VA|Virginia", "WA|Washington", "WV|West Virginia", "WI|Wisconsin", "WY|Wyoming");

  ?>
  <select name=<?=$name;?> id="state" ><?
    foreach ($state_list as $s) {
        $values = explode("|",$s);
        ?><option value="<?=$values[0];?>" <?
                if($selected == $values[0]) { ?>SELECTED<? }
                ?>>
                <? if($full_state) { ?><?=$values[1];?><? } else { ?><?=$values[0];?><? } ?></option><?
    }
  ?></select><?
}
?>


<span class="InputDiscription">State: </span><div class="InputInner"><?=state_select('state',false,'AL'); ?></div><!----- END .InputInner ---------->
<?php
 $setError=$_GET['seterror']; 
if($setError == 1){
    echo "<span class='errorMsg'>*Required</span>";
    }
else
    echo "<span>*</span>"; 

?>

谢谢！

更新_______________________________

值被发送到的文件---

 $selectvalue=$_POST['hiddenfield'];
    echo $selectvalue;

主文件！

<head>  
<script type="text/javascript">
function submitform(){
    // Get the index of selected item
    var list = document.getElementById('state');
    var INDEX = list.selectedIndex;
    document.getElementById("hiddenfield").value=list[INDEX].value;

    //Submit the form
    document.forms["theform"].submit();
}
</script>
</head>
    <div class="InputContainer">
    <!------------------------------------------STATE SELECTION CODE ------------------------------------------->
<?php
    function state_select ($name,$full_state,$selected = '') {

  $state_list = array("AL|Alabama","AK|Alaska","AZ|Arizona", "AR|Arkansas", "CA|California", "CO|Colorado", "CT|Connecticut", "DE|Delaware", "DC|Washington D.C.", "FL|Florida", "GA|Georgia", "HI|Hawaii", "ID|Idaho", "IL|Illinois", "IN|Indiana", "IA|Iowa", "KS|Kansas", "KY|Kentucky", "LA|Louisiana", "ME|Maine", "MD|Maryland", "MA|Massachusetts", "MI|Michigan", "MN|Minnesota", "MS|Mississippi", "MO|Missouri", "MT|Montana", "NE|Nebraska", "NV|Nevada", "NH|New Hampshire", "NJ|New Jersey", "NM|New Mexico", "NY|New York", "NC|North Carolina", "ND|North Dakota", "OH|Ohio", "OK|Oklahoma", "OR|Oregon", "PA|Pennsylvania", "RI|Rhode Island", "SC|South Carolina", "SD|South Dakota", "TN|Tennessee", "TX|Texas", "UT|Utah", "VT|Vermont", "VA|Virginia", "WA|Washington", "WV|West Virginia", "WI|Wisconsin", "WY|Wyoming");

  ?>
  <select name=<?=$name;?> id="state" ><?
    foreach ($state_list as $s) {
        $values = explode("|",$s);
        ?><option value="<?=$values[0];?>" <?
                if($selected == $values[0]) { ?>SELECTED<? }
                ?>>

                <?  if($full_state) { ?><?=$values[1];?><? } else { ?><?=$values[0];?><? } ?></option><?
    }
  ?></select><?
}
?>




<span class="InputDiscription">State: </span><div class="InputInner">
<?=state_select('state',false,'AL'); ?>
 </div><!----- END .InputInner ---------->
<input type="hidden" id="hiddenfield" name="hiddenfield" value="">
<?php

 $setError=$_GET['seterror']; 
if($setError == 1){
    echo "<span class='errorMsg'>*Required</span>";
    }
else
    echo "<span>*</span>"; 

?>

</div><!---------------------------------END .InputContaienr ----------------------------------->

已更新---------------------------------------------- -------------------------- 主文件-------------

<html>
<head>  
<script type="text/javascript">
function submitform(){
    // Get the index of selected item
    var list = document.getElementById('state');
    var INDEX = list.selectedIndex;
    document.getElementById("hiddenfield").value=list[INDEX].value;

    //Submit the form
    document.forms["theform"].submit();
}
</script>
</head>
<body>

<?php
include('Main.css');

$hostname="";
$username="";
$password="";
$database="";

/*mysql_connect($hostname,$username,$password);
@mysql_select_db($database) or die( "Unable to select database");*/

//function getFN(){
try {  
  # MySQL with PDO_MYSQL  
  $DBH = new PDO("mysql:host=$hostname;dbname=$database", $username, $password);  
  $DBH->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION );

  //$DBH->prepare('SELECT first FROM contacts');
}  
catch(PDOException $e) { 
    echo "I'm sorry, I'm afraid I can't do that.";  
    file_put_contents('PDOErrors.txt', $e->getMessage(), FILE_APPEND);   
}  
//get query
$FNresult=$DBH->query('SELECT CompanyNames FROM companynames'); 
//set fetch mode
$FNresult->setFetchMode(PDO::FETCH_ASSOC);

$DBH = null; 
?>


        <div id="MainContainer">   
            <h2 align="center">
                <u>PLEASE SUPPLY THE FOLLOWING INFORMATION REGARDING YOUR AUTO INSURANCE POLICY:</u>
           </h2>

         <div class="FormContainer">
            <form name="theform" action="insert.php" method="post">
                <div class="CheckBoxContainer">
            <input type="checkbox" value"On" name="only-thisform"/>I will complete the insurance verification form only. 
            <?php 
            $setError=$_GET['seterror'];

            if ($setError == 1){

                echo "<div class='errorMsg'> *Required</div>";
            }
             ?>
            <br>
            <br>

            <input type="checkbox"  value="On" name="approval" id="approval"/>I agree to authorize PCG Protects, LLC to receive a certificate of liability and or to be added as an additional interest on my personal auto policy, whichever accommodates my Auto Insurance Carriers standard practice, so they can monitor the active status of my personal auto policy, on behalf of my employer.
             <?php 
             $setError=$_GET['seterror'];
             if ($setError == 1){

                echo "<div class='errorMsg'> *Required</div>";
             }

             ?>
            </div><!------------------------------------END   .CheckBoxContainer ------------------------------------------->
            <br>
            <br>


<script type="text/javascript"
     src="http://code.jquery.com/jquery-latest.min.js">
</script>   
<!-- javascript on client-side -->


<div class="DropDownSelector">
<?php

$dropdown = "<select name='CompanyNames' id='CompanyNames' >";

$dropdown .= "\r\n<option  id ='other' name ='other' value='other'>other</option>";

while($row =$FNresult->fetch()) {

  $dropdown .= "\r\n<option  id ='firstname' name ='first' value='{$row['CompanyNames']}'>{$row['CompanyNames']}</option>";
}

$dropdown .= "\r\n</select>";

echo $dropdown;
?>
    <div class="DropdownDiscription">Please select your insurance company.  Select other if you do not see it listed. </div>
</div> <!------------------------------------------END .DropDownSelector -------------------------------------------------------->
<script type="text/javascript">  

var dropdown = $('#CompanyNames');
//var test = $('#firstname');
//document.write(dropdown.val());

dropdown.bind('change', function(){

    $.post('backgroundScript.php', 
        { 
            'CompanyNames': dropdown.val()

        },
        function(response) {
            $('#compname').val(response.Companyname);
            //$('#phone').val(response.phone);
            //$('#policynum').val(response.policynum);
            //$('#nameofPolicyholder').val(response.policyholder);
            //$('#mailing').val(response.mailing);
            // Repeat for all of your form fields
        },
        'json'
    );

});
</script>
<br>
<div class="FormBody">
    <div class="InputContainer">
<span class="InputDiscription">Insurance Company Name: </span><div class="InputInner"> <input type="text" name="compname" id="compname" ></div><!----- END .InputInner ---------->

<?php
 $setError=$_GET['seterror']; 
if($setError == 1){
    echo "<span class='errorMsg'>*Required</span>";
    }
else
    echo "<span>*</span>"; 
?>

</div><!---------------------------------END .InputContaienr ----------------------------------->
<br>
    <div class="InputContainer">
<span class="InputDiscription">Insurance Phone number: </span><div class="InputInner"><input type="text"  name="phone" id="phone"></div><!----- END .InputInner ---------->
<?php
 $setError=$_GET['seterror']; 
if($setError == 1){
    echo "<span class='errorMsg'>*Required</span>";
    }
else
    echo "<span>*</span>"; 
?>

</div><!---------------------------------END .InputContaienr ----------------------------------->
<br>
    <div class="InputContainer">
<span class="InputDiscription">Policy Number: </span><div class="InputInner"><input type="text" name ="policynum" id="policynum"></div><!----- END .InputInner ---------->
<?php
 $setError=$_GET['seterror']; 
if($setError == 1){
    echo "<span class='errorMsg'>*Required</span>";
    }
else
    echo "<span>*</span>"; 
?>

</div><!---------------------------------END .InputContaienr ----------------------------------->
<br>
    <div class="InputContainer">
<span class="InputDiscription">Name of the Policyholder: </span><div class="InputInner"><input type="text" name="nameofPolicyholder" id="nameofPolicyholder"></div><!----- END .InputInner ---------->
<?php
 $setError=$_GET['seterror']; 
if($setError == 1){
    echo "<span class='errorMsg'>*Required</span>";
    }
else
    echo "<span>*</span>"; 
?>


</div><!---------------------------------END .InputContaienr ----------------------------------->
<br>
    <div class="InputContainer">
<span class="InputDiscription">Policyholder mailing address: </span><div class="InputInner"><input type="text" name="mailing" id="mailing"></div><!----- END .InputInner ---------->
<?php
 $setError=$_GET['seterror']; 
if($setError == 1){
    echo "<span class='errorMsg'>*Required</span>";
    }
else
    echo "<span>*</span>"; 
?>

</div><!---------------------------------END .InputContaienr ----------------------------------->
<br>
    <div class="InputContainer">
<span class="InputDiscription">City: </span><div class="InputInner"><input type="text" name="city" id="city"></div><!----- END .InputInner ---------->
<?php
 $setError=$_GET['seterror']; 
if($setError == 1){
    echo "<span class='errorMsg'>*Required</span>";
    }
else
    echo "<span>*</span>"; 
?>


</div><!---------------------------------END .InputContaienr ----------------------------------->
<br>
    <div class="InputContainer">
    <!------------------------------------------STATE SELECTION CODE ------------------------------------------->
<?php
    function state_select ($name,$full_state,$selected = '') {

  $state_list = array("AL|Alabama","AK|Alaska","AZ|Arizona", "AR|Arkansas", "CA|California", "CO|Colorado", "CT|Connecticut", "DE|Delaware", "DC|Washington D.C.", "FL|Florida", "GA|Georgia", "HI|Hawaii", "ID|Idaho", "IL|Illinois", "IN|Indiana", "IA|Iowa", "KS|Kansas", "KY|Kentucky", "LA|Louisiana", "ME|Maine", "MD|Maryland", "MA|Massachusetts", "MI|Michigan", "MN|Minnesota", "MS|Mississippi", "MO|Missouri", "MT|Montana", "NE|Nebraska", "NV|Nevada", "NH|New Hampshire", "NJ|New Jersey", "NM|New Mexico", "NY|New York", "NC|North Carolina", "ND|North Dakota", "OH|Ohio", "OK|Oklahoma", "OR|Oregon", "PA|Pennsylvania", "RI|Rhode Island", "SC|South Carolina", "SD|South Dakota", "TN|Tennessee", "TX|Texas", "UT|Utah", "VT|Vermont", "VA|Virginia", "WA|Washington", "WV|West Virginia", "WI|Wisconsin", "WY|Wyoming");

  ?>
  <select name=<?=$name;?> id="state" ><?
    foreach ($state_list as $s) {
        $values = explode("|",$s);
        ?><option value="<?=$values[0];?>" <?
                if($selected == $values[0]) { ?>SELECTED<? }
                ?>>

                <?  if($full_state) { ?><?=$values[1];?><? } else { ?><?=$values[0];?><? } ?></option><?
    }
  ?></select><?
}
?>




<span class="InputDiscription">State: </span><div class="InputInner">
<?=state_select('state',false,'AL'); ?>
 </div><!----- END .InputInner ---------->
<input type="hidden" id="hiddenfield" name="hiddenfield" value="">
<?php

 $setError=$_GET['seterror']; 
if($setError == 1){
    echo "<span class='errorMsg'>*Required</span>";
    }
else
    echo "<span>*</span>"; 

?>

</div><!---------------------------------END .InputContaienr ----------------------------------->
<br>
<?php 
 $setError=$_GET['seterror']; 
if($setError == 1){
echo "<script type='text/javascript'>alert('Please check to make sure all required fields are filled out!');</script>";
}
?>
<input type="Submit" name="Submit" >

</div><!-------------------------------------------END .FormBody ------------------------------------------------------->
</form>


    </div><!--------------------------------------End .FormContainer ---------------------------------------------->

</div><!----------------------------------End #MainContainer----------------------------------->

</body>
</html>

其他文件---------------- 除了那个显示代码外，所有内容都被注释掉了 / /*************** ******验证复选框已选中*** *************** **************/ /* $setError = 0; $ch1 = '未选中'; $ch2 = '未选中'; // print_r("测试 ch1 : $ch1"); if(isset($_POST['only-thisform'])) {

                $ch1 = 'Check';
                //if ($setChecker != 1)
                $setError= 0;
                //print_r("testing ch1: $ch1");

            }
            if ($ch1 !='Check' ){

            $setError = 1;
            returnBack();

        }
            if (isset($_POST['approval'])) {
                //$setChecker = 1;
                $ch2 = 'Check';
                $setError= 0;
                //print_r("testing  ch2: $ch2");
            }
             if ($ch2 != 'Check' ){

            $setError = 1;
            returnBack();

        }*/
/***************************************************************************************************************************************/       
        /* 
function returnBack(){
    header("Location: http://pcgprotects.com/PCG/test.php?seterror=1");
    exit;

}


if(isset($_POST['compname']))  {
    $compname=$_POST['compname'];
}
else{
    $setError = 1;
    returnBack();
}

if(isset($_POST['phone']))  {
    $phone=$_POST['phone'];
}
else{
    $setError = 1;
    returnBack();
}

if(isset($_POST['policynum']))  {
    $policynum=$_POST['policynum'];
}
else{
    $setError = 1;
    returnBack();
}

if(isset($_POST['nameofPolicyholder']))  {
    $nameofPolicyholder=$_POST['nameofPolicyholder'];
}
else{
    $setError = 1;
    returnBack();
}

if(isset($_POST['mailing']))  {
    $mailing=$_POST['mailing'];
}
else{
    $setError = 1;
    returnBack();
}
if(isset($_POST['city']))  {
    $city=$_POST['city'];
}
else{
    $setError = 1;
    returnBack();
}
if(isset($_POST['mailing']))  {
    $mailing=$_POST['mailing'];
}
else{
    $setError = 1;
    returnBack();
}
*/

    echo "hiddenfield=".$_POST['hiddenfield'];

/*
mysql_connect($hostname,$username,$password);
@mysql_select_db($database) or die( "Unable to select database");
$new_id_number = mysql_insert_id();
$query = "INSERT INTO contacts VALUES ('$new_id_number','$compname','$phone','$policynum','$nameofPolicyholder','$mailing')";
echo 'being inserted';
mysql_query($query);

if ('SELECT * FROM companynames WHERE CompanyNames != :compname');{
    $query = "INSERT INTO companynames VALUES('$new_id_number','$compname')";
    mysql_query($query);
    echo "working";
}
mysql_close();*/
?>

【问题讨论】：

你的问题是关于如何处理name==$name;?>，对吗？你为什么首先使用变量名进行选择？我能想到的最好的方法是将名称放在表单中的隐藏字段中。
不太明白这个问题，但如果你添加 print_r($_POST);你会看到你在 post 数组中得到了什么值
你能举个例子吗？
@Dagon 我想在另一个文件中获取该值，以便将其存储在我的数据库中。

标签： php

【解决方案1】：

这将提交表单，您需要添加一个表单元素并在select元素上添加onchange事件提交，希望对您有帮助

<html>
<head>  
<script type="text/javascript">
function submitform(){
    document.forms["theform"].submit();
}
</script>
</head>
<body>

<form action="otherfile.php" method="post" name="theform">
<?php
    function state_select ($name,$full_state,$selected = '') {

  $state_list = array("AL|Alabama","AK|Alaska","AZ|Arizona", "AR|Arkansas", "CA|California", "CO|Colorado", "CT|Connecticut", "DE|Delaware", "DC|Washington D.C.", "FL|Florida", "GA|Georgia", "HI|Hawaii", "ID|Idaho", "IL|Illinois", "IN|Indiana", "IA|Iowa", "KS|Kansas", "KY|Kentucky", "LA|Louisiana", "ME|Maine", "MD|Maryland", "MA|Massachusetts", "MI|Michigan", "MN|Minnesota", "MS|Mississippi", "MO|Missouri", "MT|Montana", "NE|Nebraska", "NV|Nevada", "NH|New Hampshire", "NJ|New Jersey", "NM|New Mexico", "NY|New York", "NC|North Carolina", "ND|North Dakota", "OH|Ohio", "OK|Oklahoma", "OR|Oregon", "PA|Pennsylvania", "RI|Rhode Island", "SC|South Carolina", "SD|South Dakota", "TN|Tennessee", "TX|Texas", "UT|Utah", "VT|Vermont", "VA|Virginia", "WA|Washington", "WV|West Virginia", "WI|Wisconsin", "WY|Wyoming");

  ?>
  <select name=<?=$name;?> id="state" onchange="submitform()"><?
    foreach ($state_list as $s) {
        $values = explode("|",$s);
        ?><option value="<?=$values[0];?>" <?
                if($selected == $values[0]) { ?>SELECTED<? }
                ?>>
                <? if($full_state) { ?><?=$values[1];?><? } else { ?><?=$values[0];?><? } ?></option><?
    }
  ?></select><?
}
?>


<span class="InputDiscription">State: </span><div class="InputInner"><?=state_select('state',false,'AL'); ?></div><!----- END .InputInner ---------->
<?php
 $setError=$_GET['seterror']; 
if($setError == 1){
    echo "<span class='errorMsg'>*Required</span>";
    }
else
    echo "<span>*</span>"; 

?>
</form>
</body>
</html>

【讨论】：

有没有办法把函数放在隐藏的输入框中，然后把函数放在输入框的值中？
不能隐藏功能，但需要从列表中获取选中的值吗？
是的，我已经在表单操作中将内容提交到文件...我只想获取值 $_POST['name'] 以便将其分配给变量
通过这个函数可以获取值并添加到隐藏字段
你的意思是从发布的文件中获取变量？

【解决方案2】：

这个怎么样？并在其他 php 文件中使用 $selectvalue=$_POST['hiddenfield']

<html>
<head>  
<script type="text/javascript">
function submitform(){
    // Get the index of selected item
    var list = document.getElementById('state');
    var INDEX = list.selectedIndex;
    document.getElementById("hiddenfield").value=list[INDEX].value;

    //Submit the form
    document.forms["theform"].submit();
}
</script>
</head>
<body>

<form action="otherfile.php" method="post" name="theform">
<?php
    function state_select ($name,$full_state,$selected = '') {

  $state_list = array("AL|Alabama","AK|Alaska","AZ|Arizona", "AR|Arkansas", "CA|California", "CO|Colorado", "CT|Connecticut", "DE|Delaware", "DC|Washington D.C.", "FL|Florida", "GA|Georgia", "HI|Hawaii", "ID|Idaho", "IL|Illinois", "IN|Indiana", "IA|Iowa", "KS|Kansas", "KY|Kentucky", "LA|Louisiana", "ME|Maine", "MD|Maryland", "MA|Massachusetts", "MI|Michigan", "MN|Minnesota", "MS|Mississippi", "MO|Missouri", "MT|Montana", "NE|Nebraska", "NV|Nevada", "NH|New Hampshire", "NJ|New Jersey", "NM|New Mexico", "NY|New York", "NC|North Carolina", "ND|North Dakota", "OH|Ohio", "OK|Oklahoma", "OR|Oregon", "PA|Pennsylvania", "RI|Rhode Island", "SC|South Carolina", "SD|South Dakota", "TN|Tennessee", "TX|Texas", "UT|Utah", "VT|Vermont", "VA|Virginia", "WA|Washington", "WV|West Virginia", "WI|Wisconsin", "WY|Wyoming");

  ?>
  <select name=<?=$name;?> id="state" onchange="submitform()"><?
    foreach ($state_list as $s) {
        $values = explode("|",$s);
        ?><option value="<?=$values[0];?>" <?
                if($selected == $values[0]) { ?>SELECTED<? }
                ?>>
                <? if($full_state) { ?><?=$values[1];?><? } else { ?><?=$values[0];?><? } ?></option><?
    }
  ?></select><?
}
?>


<span class="InputDiscription">State: </span><div class="InputInner"><?=state_select('state',false,'AL'); ?></div><!----- END .InputInner ---------->
<?php
 $setError=$_GET['seterror']; 
if($setError == 1){
    echo "<span class='errorMsg'>*Required</span>";
    }
else
    echo "<span>*</span>"; 

?>
<input type="hidden" id="hiddenfield" name="hiddenfield" value="">
</form>
</body>
</html>

在 otherfile.php 中输入这个，你可以得到值

<?php
echo "hiddenfield=".$_POST['hiddenfield'];
?>

【讨论】：

嘿，什么都没发生...我提交并没有得到其他文件中的值 $state = $_POST['hiddenfield']; echo ("你的状态是 $state");
哦，我确实有其他 java 脚本代码，所以你知道，但那是用于自动填写表格。代码中的“状态”是什么，在哪里？
好吧，“状态”是选项选择元素的 id，它对我有用，你在做什么？让我再检查一下代码
在我上面的问题中重新发布
知道了，非常感谢你的帮助和祝福！@真的很感谢你为我抽出的时间！