$_POST 和 $_GET答案

【问题标题】：$_POST and $_GET$_POST 和 $_GET
【发布时间】：2015-05-22 16:11:48
【问题描述】：

我正在尝试将所有 $_GET 方法转换为此页面上的 $_POST。我希望 php?produktid=0 在地址栏上不可见。我该如何解决这个问题？

这是一个应用程序，我希望它自己运行。

//PREVIOUS BUTTON
$index = $_GET['produktid'];
echo "<td>";
if ($index > 0) {
    echo '<a href="newarrivals.php?produktid=' . ($index - 1) . '"> <img style="margin-left: 77px;"  src="bilder/prev.png"> </a> ';
} else {
    echo '<a href="newarrivals.php?produktid=' . (count($array) - 1) . '"> <img style="margin-left: 77px;" src="prev.png"> </a> ';
}
echo "</td>";

//IF I AM ON PAGE ONE, ECHO THIS
if($_GET['produktid']==0){
    echo "<p>Page One</p>";
}

//IF I AM ON PAGE TWO, ECHO THIS
if($_GET['produktid']==2){
    echo "<p>Page Two</p>";
}

//IF I AM ON PAGE THREE, ECHO THIS
if($_GET['produktid']==3){
    echo "<p>Page Three</p>";
}

//NEXT BUTTON
echo "<td>";
if ($index < count($array) - 1) {
    echo '<a href="newarrivals.php?produktid=' . ($index + 1) . '"> <img style="margin-left: -70px;" src="bilder/next.png"> </a> ';
} else {
    echo '<a href="newarrivals.php?produktid=0"> <img style="margin-left: -70px;" src="next.png"> </a>';
}

echo "</td>";
echo "</table>";
echo "<div>";

?>

这是我的整个页面的样子

<!DOCTYPE HTML>
<html lang="sv-SE"/>
<head>
<meta charset="UTF-8"/>
<title>Images</title>
<style media="screen" type="text/css">
tr {display: inline-block;}
td {width: 120px;
    height: 90px;
    box-sizing: border-box;}
#Latest_products {
    height: 280px;
    width: 670px;
    background-color: grey;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    }

</style>

</head>
<body>
<div id="latest_products">
<?php

    error_reporting(0);
        echo "<p><h1>New Arrivals</h1></p>";
        $mysqli = new mysqli('localhost', 'root', '', 'webshop');
        mysql_set_charset("utf-8");


    //Identify Photo Sequences
        $array = array(
            0 => "picture1.jpg",
            1 => "picture2.jpg",
            2 => "kalle3.jpg",

    );



echo "<table>";

    //PREV BUTTON


        $index = $_GET['produktid'];
        echo "<td>";
                if ($index > 0) {
                    echo '<a href="newarrivals.php?produktid=' . ($index - 1) . '"> <img style="margin-left: 77px;"  src="bilder/prev.png"> </a> ';
                } else {
                    echo '<a href="newarrivals.php?produktid=' . (count($array) - 1) . '"> <img style="margin-left: 77px;" src="bilder/prev.png"> </a> ';
                }
        echo "</td>";



        //FOR PAGE 1 SHOW THIS
        if($_GET['produktid']==0){

                    $res = "SELECT * FROM produktlista ORDER BY produktankomst DESC LIMIT 0,3";
                    $result = $mysqli->query($res);

                    while($myRow = $result->fetch_array())
                        {   
                            echo "<tr>";
                            echo "<td><a href='./item.php?produktid=".$myRow["produktid"]."'> <img src=".$myRow["produktbild"]." height='132' width='132'> </a> </td>"; 
                            echo "<td style='display: block;'><a href='./item.php?produktid=".$myRow["produktid"]."'> <h4>".$myRow["produktnamn"]."</h4></a> </td>";
                            echo "</tr>";

                        }
        }

        //FOR PAGE 2 SHOW THIS
        if($_GET['produktid']==1){

                    $res = "SELECT * FROM produktlista ORDER BY produktankomst DESC LIMIT 1,3";
                    $result = $mysqli->query($res);

                    while($myRow = $result->fetch_array())
                        {   
                            echo "<tr>";
                            echo "<td><a href='./item.php?produktid=".$myRow["produktid"]."'> <img src=".$myRow["produktbild"]." height='132' width='132'> </a> </td>"; 
                            echo "<td style='display: block;'><a href='./item.php?produktid=".$myRow["produktid"]."'> <h4>".$myRow["produktnamn"]."</h4></a> </td>";
                            echo "</tr>";


                        }
        }

        //FOR PAGE 3 SHOW THIS

        if($_GET['produktid']==2){

                    $res = "SELECT * FROM produktlista ORDER BY produktankomst DESC LIMIT 2,3";
                    $result = $mysqli->query($res);

                    while($myRow = $result->fetch_array())
                        {   
                            echo "<tr>";
                            echo "<td><a href='./item.php?produktid=".$myRow["produktid"]."'> <img src=".$myRow["produktbild"]." height='132' width='132'> </a> </td>"; 
                            echo "<td style='display: block;'><a href='./item.php?produktid=".$myRow["produktid"]."'> <h4>".$myRow["produktnamn"]."</h4></a> </td>";
                            echo "</tr>";

                        }
        }



echo "<td>";

            //NEXT BUTTON

        if ($index < count($array) - 1) {
            echo '<a href="newarrivals.php?produktid=' . ($index + 1) . '"> <img style="margin-left: -70px;" src="bilder/next.png"> </a> ';
        } else {
            echo '<a href="newarrivals.php?produktid=0"> <img style="margin-left: -70px;" src="bilder/next.png"> </a>';
        }

        echo "</td>";
        echo "</table>";
        echo "<div>";

?>

</body>
</html>

我更改后它现在看起来像这样，“PREV”“NEXT”链接现在不起作用。

<!DOCTYPE HTML>
<html lang="sv-SE"/>
<head>
<meta charset="UTF-8"/>
<title>Images</title>
<style media="screen" type="text/css">
tr {display: inline-block;}
td {width: 120px;
    height: 90px;
    box-sizing: border-box;}
#senaste_produkter {
    height: 280px;
    width: 670px;
    background-color: grey;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    }

</style>

</head>
<body>
<div id="senaste_produkter">
<?php

    //Databasuppkoppling - Visa senaste produkter ifrån databasen
    error_reporting(0);
        echo "<p><h1>New Arrivals</h1></p>";
        $mysqli = new mysqli('localhost', 'root', '', 'webshop');
        mysql_set_charset("utf-8");


    //Identify picture sequences

        $array = array(
            0 => "picture1.jpg",
            1 => "picture2.jpg",
            2 => "kalle3.jpg",

    );



echo "<table>";

    //BACK LINK

        $index = $_GET['produktid'];
        echo "<td>";

                if ($index > 0) {
                      echo '<form action="newarrivals.php"><input type="hidden" name="produktid" value="' . ($index - 1) . '"><input style="margin-left: 77px;" src="bilder/prev.png"></form>';
                } else {
                    echo '<form action="newarrivals.php"><input type="hidden" name="produktid" value="'. (count($array) - 1) . '"> <img style="margin-left: 77px;" src="bilder/prev.png"> </form>';
                }
        echo "</td>";



        //IF I GO TO PAGE 3, SHOW THIS


        if($_GET['produktid']==0){

                    $res = "SELECT * FROM produktlista ORDER BY produktankomst DESC LIMIT 0,3";
                    $result = $mysqli->query($res);

                    while($myRow = $result->fetch_array())
                        {   
                            echo "<tr>";
                            echo "<td><a href='./item.php?produktid=".$myRow["produktid"]."'> <img src=".$myRow["produktbild"]." height='132' width='132'> </a> </td>"; 
                            echo "<td style='display: block;'><a href='./item.php?produktid=".$myRow["produktid"]."'> <h4>".$myRow["produktnamn"]."</h4></a> </td>";
                            echo "</tr>";

                        }
        }

        //IF I GO TO PAGE 2, SHOW THIS


        if($_GET['produktid']==1){

                    $res = "SELECT * FROM produktlista ORDER BY produktankomst DESC LIMIT 1,3";
                    $result = $mysqli->query($res);

                    while($myRow = $result->fetch_array())
                        {   
                            echo "<tr>";
                            echo "<td><a href='./item.php?produktid=".$myRow["produktid"]."'> <img src=".$myRow["produktbild"]." height='132' width='132'> </a> </td>"; 
                            echo "<td style='display: block;'><a href='./item.php?produktid=".$myRow["produktid"]."'> <h4>".$myRow["produktnamn"]."</h4></a> </td>";
                            echo "</tr>";


                        }
        }

        //IF I GO TO PAGE 3, SHOW THIS
        if($_GET['produktid']==2){

                    $res = "SELECT * FROM produktlista ORDER BY produktankomst DESC LIMIT 2,3";
                    $result = $mysqli->query($res);

                    while($myRow = $result->fetch_array())
                        {   
                            echo "<tr>";
                            echo "<td><a href='./item.php?produktid=".$myRow["produktid"]."'> <img src=".$myRow["produktbild"]." height='132' width='132'> </a> </td>"; 
                            echo "<td style='display: block;'><a href='./item.php?produktid=".$myRow["produktid"]."'> <h4>".$myRow["produktnamn"]."</h4></a> </td>";
                            echo "</tr>";

                        }
        }



echo "<td>";


            //NEXT PAGE


        if ($index < count($array) - 1) {
            echo '<form action="newarrivals.php"><input type="hidden" name="produktid" value="' . ($index + 1) . '"> <img style="margin-left: -70px;" src="bilder/next.png"> </a> ';
        } else {
            echo '<form action="newarrivals.php"> <img style="margin-left: -70px;" src="bilder/next.png"> </a>';
        }

        echo "</td>";
        echo "</table>";
        echo "<div>";

?>

</body>
</html>

【问题讨论】：

您必须使用表单而不是链接。然后您可以将参数放入隐藏输入中。
或者您可以使用 AJAX 并在不重新加载的情况下更新页面。
你能用表单而不是我的代码中的链接来展示一个例子吗？
您是否有特定原因要使用 POST 而不是 GET？
@YacoZaragoza 他在问题中说：他不希望参数进入网址栏。

标签： post get

【解决方案1】：

您需要使用表单而不是链接，并将参数放入隐藏输入中。所以改变

echo '<a href="newarrivals.php?produktid=' . ($index - 1) . '"> <img style="margin-left: 77px;"  src="bilder/prev.png"> </a> ';

到：

echo '<form action="newarrivals.php" method="post"><input type="hidden" name="produktid" value="' . ($index - 1) . '"><input type="image" style="margin-left: 77px;" src="bilder/prev.png"></form>';

并以类似方式更改所有其他链接。

这是整个重写的脚本：

<!DOCTYPE HTML>
<html lang="sv-SE"/>
<head>
<meta charset="UTF-8"/>
<title>Images</title>
<style media="screen" type="text/css">
tr {display: inline-block;}
td {width: 120px;
    height: 90px;
    box-sizing: border-box;}
#senaste_produkter {
    height: 280px;
    width: 670px;
    background-color: grey;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    }

</style>

</head>
<body>
<div id="senaste_produkter">
<?php

    //Databasuppkoppling - Visa senaste produkter ifrån databasen
    error_reporting(0);
        echo "<p><h1>New Arrivals</h1></p>";
        $mysqli = new mysqli('localhost', 'root', '', 'webshop');
        mysql_set_charset("utf-8");


    //Identify picture sequences

        $array = array(
            0 => "picture1.jpg",
            1 => "picture2.jpg",
            2 => "kalle3.jpg",

    );



echo "<table>";

    //BACK LINK

        $index = $_GET['produktid'];
        echo "<tr><td>";

                if ($index > 0) {
                      echo '<form action="newarrivals.php" method="post"><input type="hidden" name="produktid" value="' . ($index - 1) . '"><input type="image" style="margin-left: 77px;" src="bilder/prev.png"></form>';
                } else {
                    echo '<form action="newarrivals.php" method="post"><input type="hidden" name="produktid" value="'. (count($array) - 1) . '"> <input type="image" style="margin-left: 77px;" src="bilder/prev.png"> </form>';
                }
        echo "</td></tr>";



        //IF I GO TO PAGE 3, SHOW THIS


        if($_GET['produktid']==0){

                    $res = "SELECT * FROM produktlista ORDER BY produktankomst DESC LIMIT 0,3";
                    $result = $mysqli->query($res);

                    while($myRow = $result->fetch_array())
                        {   
                            echo "<tr>";
                            echo "<td><a href='./item.php?produktid=".$myRow["produktid"]."'> <img src=".$myRow["produktbild"]." height='132' width='132'> </a> </td>"; 
                            echo "<td style='display: block;'><a href='./item.php?produktid=".$myRow["produktid"]."'> <h4>".$myRow["produktnamn"]."</h4></a> </td>";
                            echo "</tr>";

                        }
        }

        //IF I GO TO PAGE 2, SHOW THIS


        if($_GET['produktid']==1){

                    $res = "SELECT * FROM produktlista ORDER BY produktankomst DESC LIMIT 1,3";
                    $result = $mysqli->query($res);

                    while($myRow = $result->fetch_array())
                        {   
                            echo "<tr>";
                            echo "<td><a href='./item.php?produktid=".$myRow["produktid"]."'> <img src=".$myRow["produktbild"]." height='132' width='132'> </a> </td>"; 
                            echo "<td style='display: block;'><a href='./item.php?produktid=".$myRow["produktid"]."'> <h4>".$myRow["produktnamn"]."</h4></a> </td>";
                            echo "</tr>";


                        }
        }

        //IF I GO TO PAGE 3, SHOW THIS
        if($_GET['produktid']==2){

                    $res = "SELECT * FROM produktlista ORDER BY produktankomst DESC LIMIT 2,3";
                    $result = $mysqli->query($res);

                    while($myRow = $result->fetch_array())
                        {   
                            echo "<tr>";
                            echo "<td><a href='./item.php?produktid=".$myRow["produktid"]."'> <img src=".$myRow["produktbild"]." height='132' width='132'> </a> </td>"; 
                            echo "<td style='display: block;'><a href='./item.php?produktid=".$myRow["produktid"]."'> <h4>".$myRow["produktnamn"]."</h4></a> </td>";
                            echo "</tr>";

                        }
        }



echo "<tr><td>";


            //NEXT PAGE


        if ($index < count($array) - 1) {
            echo '<form action="newarrivals.php" method="post"><input type="hidden" name="produktid" value="' . ($index + 1) . '"> <input type="image" style="margin-left: -70px;" src="bilder/next.png">';
        } else {
            echo '<form action="newarrivals.php" method="post"> <input type="image" style="margin-left: -70px;" src="bilder/next.png">';
        }

        echo "</td></tr>";
        echo "</table>";
        echo "<div>";

?>

</body>
</html>

【讨论】：