如何在php中获取选择框的多个选定值（） _表单

给定项目列表, 任务是使用PHP从选择框中检索多个选择的值。
在HTML中使用Multiple属性从下拉列表中选择多个值。在HTML中选择多个值取决于操作系统和浏览器。

对于窗口用户–按住+ CTRL键选择多个选项
对于Mac用户-按住Command键可选择多个选项

例子：本示例使用HTML创建项目列表。

< html> < body> < form method = "post" action = "name.php"> < h4> SELECT SUJECTS< /h4> < !--Using multiple to select multiple value--> < select name = "subject" multiple size = 6> < option value = "http://www.srcmini.com/english"> ENGLISH< /option> < option value = "http://www.srcmini.com/maths"> MATHS< /option> < option value = "http://www.srcmini.com/computer"> COMPUTER< /option> < option value = "http://www.srcmini.com/physics"> PHYSICS< /option> < option value = "http://www.srcmini.com/chemistry"> CHEMISTRY< /option> < option value = "http://www.srcmini.com/hindi"> HINDI< /option> < /select> < input type = "submit" name = "submit" value = http://www.srcmini.com/Submit> < /form> < /body> < /html>

现在, 任务是从列表中检索或打印多个选定的值。使用表单方法和循环来检索PHP中的选定值。
【如何在php中获取选择框的多个选定值（）】例子：

< html> < body> < !--name.php to be called on form submission--> < form method = 'post'> < h4> SELECT SUJECTS< /h4> < select name = 'subject[]' multiple size = 6> < option value = 'http://www.srcmini.com/english'> ENGLISH< /option> < option value = 'http://www.srcmini.com/maths'> MATHS< /option> < option value = 'http://www.srcmini.com/computer'> COMPUTER< /option> < option value = 'http://www.srcmini.com/physics'> PHYSICS< /option> < option value = 'http://www.srcmini.com/chemistry'> CHEMISTRY< /option> < option value = 'http://www.srcmini.com/hindi'> HINDI< /option> < /select> < input type = 'submit' name = 'submit' value = http://www.srcmini.com/Submit> < /form> < /body> < /html> < ?php//Check if form is submitted successfully if (isset( $_POST ["submit" ])) { //Check if any option is selected if (isset( $_POST [ "subject" ])) { //Retrieving each selected option foreach ( $_POST [ 'subject' ] as $subject ) print "You selected $subject< br/> " ; } else echo "Select an option first !!" ; } ?>

输出如下：