我试图用PHP从数组生成optgroup和选项,它会生成它,但我的optgroup是错误的。它只显示第一个单词。在页面源中它是正确的。
$my_array = array(
first optgroup => array(
key1 =>value1,
key2 => value2,
key3 => value3,
),
second optgroup => array(
key1 =>value1,
key2 => value2,
key3 => value3,
),
);
foreach ($my_array as $optgroup => $other_array) {
echo "<optgroup label=". $optgroup . ">";
foreach ($other_array as $key => $value) {
echo "<option value=" . $key . ">" . $value . "</option>";
}
echo "</optgroup>";
in the source code is fine:
<optgroup label=first optgroup>
<option value=key1>value1</option>
<option value=key2>value2</option>
.......
但在我的选择框中,我只看到"第一个",而不是"第一个选择组"
有什么想法吗??谢谢
您需要嵌入一些引号:
echo "<optgroup label='"{$optgroup}'">";
^^-----------^^----
注意嵌入引号上的反斜杠转义。这将生成
<optgroup label="foo bar">
而不是
<optgroup label=foo bar>
^^^--- value for "label" attribute
^^^---unknown random attribute
您现在正在进行
试试这个,
$my_array = array(
'first optgroup' => array(
'key1' =>'value1',
'key2' => 'value2',
'key3' => 'value3',
),
'second optgroup '=> array(
'key1' =>'value1',
'key2' => 'value2',
'key3' => 'value3',
),
);
echo "<select>";
foreach ($my_array as $optgroup => $other_array) {
echo "<optgroup label=". $optgroup . ">";
foreach ($other_array as $key => $value)
echo "<option value=" . $key . ">" . $value . "</option>";
}
echo "</optgroup>";
});
echo "</select>";