Question

我有一个数字数组，并希望为数组中的每个元素创建一个复选框。按下提交按钮后，将显示所选的复选框。有没有办法做到这一点？

PHP代码：

<?php

    $arr = array("1","2","3","4");

    //Create a checkbox for each array element
    foreach($arr as $index=>$value)
    {
    echo ' <input type="checkbox" name = "checkb[]"value="'.$value.'">'; 

    }

    echo'<input type = "submit" name = "submit" value = "submit">';

    if(isset($_POST['submit'])){
    foreach($_POST['checkb'] as $checkb)
    {
    echo $checkb." ";
    }
    }
    ?>

Answer 1

您没有任何form到post checkbox值，请使用form代码，您可以使用in_array()复选复选框：

<?php

    $arr = array("1","2","3","4");

    //Create a checkbox for each array element
    foreach($arr as $index=>$value)
    {
    echo '<form action="" method="post">';
    echo ' <input type="checkbox" name = "checkb[]"value="'.$value.'">'; 

    }

    echo'<input type = "submit" name = "submit" value = "submit"></form>';

    if(isset($_POST['submit'])){
    foreach($_POST['checkb'] as $checkb)
    {
     if(in_array($checkb,$arr))
    {
    echo '<input type="checkbox" name = "checkb[]"value="'.$checkb.'" checked>';
    }
    }
    }
    ?>

显示已选中的复选框

1 个答案: