[英]Getting multiple values out of a database using html/php multiple selector
I am trying to extract multiple values from a row in a table in a mysql database. 我试图从mysql数据库的表中的一行中提取多个值。 I want the selector to show the description only, and after the form is submitted, I want to be able to access additional information from that row.
我希望选择器仅显示描述,提交表单后,我希望能够从该行访问其他信息。 I am able to get all of the item_types out into an array, but I am not sure how to add the item_id.
我能够将所有item_types放入一个数组中,但是我不确定如何添加item_id。 I don't want item_id to show up in the html selector.
我不希望item_id显示在html选择器中。
I tried a few things like array_push. 我尝试了一些类似array_push的东西。 The only way I can think of getting this done is by making one big string in "value" and extracting the parts after the form is submitted.
我能想到的唯一方法是在“值”中创建一个大字符串,并在提交表单后提取各部分。
Here is the function so far: 这是到目前为止的功能:
function createDropdown() {
echo '<select multiple name="items[]">';
try {
$items = mysql_query("SELECT item_id,item_type FROM items");
while ($row = mysql_fetch_assoc($items)) {
echo '<option value="'.$row['item_type'].'"';
echo '>'. $row['item_type'] . '</option>'."\n";
}
}
catch(PDOException $e) {
echo 'No results';
}
echo '</select>';
}
Hmm you can try to generate a lookup table whenever you create a drop-down list: 嗯,无论何时创建下拉列表,您都可以尝试生成查找表:
function createDropdown(&$ddlLookup) {
echo '<select multiple name="items[]">';
try {
$items = mysql_query("SELECT item_id,item_type FROM items");
while ($row = mysql_fetch_assoc($items)) {
echo '<option value="'.$row['item_type'].'"';
echo '>'. $row['item_type'] . '</option>'."\n";
$ddlLookup[$item_type] = $item_id;
}
}
catch(PDOException $e) {
echo 'No results';
}
echo '</select>';
}
Then whenever you need the id for a given description you use that table(array) to get it: 然后,只要您需要给定描述的ID,就可以使用该表(数组)获取它:
$mainDropdownLUT = array();
createDropdown($mainDropdownLUT);
var_dump($mainDropdownLUT['testCow']);
-> 734
Also, if you need to pass it to another page it can be serialized and added to a hidden field. 另外,如果您需要将其传递到另一个页面,则可以对其进行序列化并将其添加到隐藏字段中。
$mainDropdownLUT = serialize($mainDropdownLUT);
"<input type="hidden" value =\"$mainDropdownLUT\">"
-------------------------**OTHER PAGE **--------------
$mainDropdownLUT = unserialize($mainDropdownLUT);
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