Php 如何将此数组修改为关联数组？

我有以下代码：

$genders = array('Male', 'Female');

foreach ( $genders as $gender ) {
echo '<option' . ( $rowMyBiodata['Gender'] == $gender ? ' selected' : '' ) . '>';
echo $gender;
echo '</option>';
}

---

但是如何获取数组的索引，以便将其用作选项标记上的值？

您只需将输出脚本更改为如下内容：

$genders = array('M' => 'Male', 'F' => 'Female');

foreach ( $genders as $gender => $description ) {
    echo '<option value='.$gender.' ' . ( $rowMyBiodata['Gender'] == $description ? ' selected' : '' ) . '>';
    echo $description;
    echo '</option>';
}

$genders=array（'M'=>'Male'，'F'=>'Female'）；
foreach（$genders as$gender=>$description）{
回声'；
回声$描述；
回声'；
}

请注意，foreach参数的新用法是有一个$key=>$value对，然后在输出中使用它，如下所示：

$genders = array('M' => 'Male', 'F' => 'Female');

foreach ($genders as $key => $value) {
    echo '<option' . ($rowMyBiodata['Gender'] == $value ? ' selected' : '' ) . ' value="' . $key . '">';
    echo $value;
    echo '</option>';
}

$genders=array（'M'=>'Male'，'F'=>'Female'）；
foreach（$key=>$value的性别）{
回声'；
echo美元价值；
回声'；
}

使用方法如下：

foreach ( $genders as $key=>$gender ) {
  echo '<option value='.$key.' . ( $rowMyBiodata['Gender'] == $gender ? ' selected' : '' ) . '>';
  echo $gender;
  echo '</option>';

foreach（$genders as$key=>$gender）{
回声'
$genders = array('M' => 'Male', 'F' => 'Female');

foreach ( $genders as $gender => $description ) {
    echo '<option value='.$gender.' ' . ( $rowMyBiodata['Gender'] == $description ? ' selected' : '' ) . '>';
    echo $description;
    echo '</option>';
}

$genders = array('M' => 'Male', 'F' => 'Female');

foreach ($genders as $key => $value) {
    echo '<option' . ($rowMyBiodata['Gender'] == $value ? ' selected' : '' ) . ' value="' . $key . '">';
    echo $value;
    echo '</option>';
}

foreach ( $genders as $key=>$gender ) {
  echo '<option value='.$key.' . ( $rowMyBiodata['Gender'] == $gender ? ' selected' : '' ) . '>';
  echo $gender;
  echo '</option>';