ID选择php / jquery [关闭]

Question

I have an select option like this :

    for($i = 1; $i <= 5; $i++)
    {
        $body .= <<<EOT

    <form method="GET" action="page2.php">
    <select class="multiSelect" size="7" name="opt[]" id="{$i}">
    <option value="1">1</option>
    <option value="2">2</option>
    ...
    </select>
    </form>
EOT;
    }

In the second page page2.php

if (isset($_GET['opt']) && !empty($_GET['opt']))
    {

        foreach($_GET['opt'] as $opt)
            $html .= "You have choice the option $opt in the !!!! $i !!!! select <br />
" ;

    }

I want to get the id ($i) of each select in the page2.php ? Can You help me please ? Thanks

Answer 1

I think what you want is this:

I moved the form tag out of the loop, so that all selects are included in one form, I then assigned a unique name to each form.

$body .= '<form method="GET" action="page2.php">';

for($i = 1; $i <= 5; $i++)
{
    $body .= <<<EOT
        <select class="multiSelect" size="7" name="opt_$i[]" id="{$i}">
        <option value="1">1</option>
        <option value="2">2</option>
        ...
        </select>

EOT;
}
$body.= '</form>';

and on page2 you want to do something like this: here I use 2 loops, the first one is looping through your selects (I'm assuming you always have 5 selects), I generate the name of each form with opt_$i (will be opt_1 ... opt_5)

With the second loop, I loop through all selected values that where selected in that select

$html = 'your choices:<br/>';
for($i = 1; $i <= 5; $i++)
    $sel = "opt_$i";    
    $html.= "in Select $i you selected:";
    foreach($_GET[$sel] as $opt){
        $html.= $opt;
    }
}

you def. want to make the output prettier, but that should be easy to do and just adds more code, making it harder to see the essential steps.