下拉菜单-显示先前在循环中选择的

Question

my problem is to show previously selected in a while loop. I found a way to do it in not-loop setup, but a loop is a problem for me.

The following code give me a drop down of countries (and country code):

<?php 

foreach($countries as $key => $value) { ?>

<option value="<?= $value . ' ' . $key ?>" title="<?= htmlspecialchars($value) ?>"><?= htmlspecialchars($value) ?></option>

<?php } ?>

And it works good. But imagine someone edit their country, thus I would love to show previously selected country. Of course I have a variable with the specific previously selected country... Thanks.

Answer 1

try this:

<?php 

foreach($countries as $key => $value) { ?>
 <?php if ($previousCountry == $value) ?>
    <option selected value="<?= $value . ' ' . $key ?>" title="<?= htmlspecialchars($value) ?>"><?= htmlspecialchars($value) ?></option>
 <?php else  ?>
    <option value="<?= $value . ' ' . $key ?>" title="<?= htmlspecialchars($value) ?>"><?= htmlspecialchars($value) ?></option>>

<?php } ?>

Not sure with the syntax but you should detect if the value is equal to the previous country then you put selected attribute on it.

Answer 2

<?php 
$preselected = 'whatever_previous_selected';

foreach($countries as $key => $value) { ?>

<option value="<?php $value; ?>" title="<?= htmlspecialchars($value) ?>" <?php if($preselected == $value) {echo "selected='selected'"; }?>>
<?= htmlspecialchars($value) ?>
</option>

<?php } ?>

Answer 3

Use selected='selected' when you get id in edit.

<?php 
$id = 1; // In edit you get some value here
foreach($countries as $key => $value) { 
$selected = (isset($id) && $id == $key) ? "selected='selected'" : "";   
?>

<option value="<?= $value . ' ' . $key ?>" title="<?= htmlspecialchars($value) ?>" <?php echo $selected ?>><?= htmlspecialchars($value) ?></option>

<?php } ?>

Answer 4

try this:

<?php 
$prevSelectedCountry;

foreach($countries as $key => $value) { ?>

<option <?php echo ($prevSelectedCountry == $value . ' ' . $key)?"selected='selected'":"" ?> value="<?= $value . ' ' . $key ?>" title="<?= htmlspecialchars($value) ?>"><?= htmlspecialchars($value) ?></option>

<?php } ?>