我有一个包含输入数组的元盒：

<input type="text" name="activite_dates[]" size="30" /><br />
<input type="text" name="activite_dates[]" size="30" /><br />
<input type="text" name="activite_dates[]" size="30" /><br />
...

我就这样保存着

update_post_meta( $post_id, "dates", $_POST[\'activite_dates\'] );

问题是，当我检索它时，我必须生成一个丑陋的函数来读取多维数组

Array 
(
[0] => Array
    (
        [0] => DATA1
        [1] => DATA2
        [2] => DATA3
        [3] => DATA99
    )

[1] => Array
    (
        [0] => DATA1
        [1] => DATA2
        [2] => DATA3
        [3] => DATA99
    )

[2] => Array
    (
        [0] => DATA1
        [1] => DATA2
        [2] => DATA3
        [3] => DATA99
    )

（）

当我保存它时，它只是添加到现有数组中

Array 
(
[0] => Array
    (
        [0] => DATA1
        [1] => DATA2
        [2] => DATA3
        [3] => DATA99
        [4] => DATA1
        [5] => DATA2
        [6] => DATA3
        [7] => DATA99
    )

[1] => Array
    (
        [0] => DATA1
        [1] => DATA2
        [2] => DATA3
        [3] => DATA99
        [4] => DATA1
        [5] => DATA2
        [6] => DATA3
        [7] => DATA99        
     )

[2] => Array
    (
        [0] => DATA1
        [1] => DATA2
        [2] => DATA3
        [3] => DATA99
        [4] => DATA1
        [5] => DATA2
        [6] => DATA3
        [7] => DATA99
    )

)

那么首先，为什么我在第一级有3个值，然后我的数组在第二级内相乘？

有关信息，请参阅我的视图代码：

$dates_gf = get_post_meta( $object->ID, \'dates\', false );
foreach ($dates_gf as $date_gf) {
    if (is_array($date_gf)){
        foreach ($date_gf as $arr_date_gf) {
            ?> <input type="text" name="activite_dates_gf[]" value="<?php echo $arr_date_gf; ?>" size="30" /><br /> <?php
        }
    } else {
        ?> <input type="text" name="activite_dates_gf[]" value="<?php echo $date_gf; ?>" size="30" /><br /> <?php
    }
} ?>

非常感谢！

<?php
// Check to make sure array is ready
if( isset($_POST[\'activite_dates\']) && is_array($_POST[\'activite_dates\']) ) {
    // If we have an array ready to save delete all the previous data
    delete_post_meta( $post_id, "dates");
    foreach($_POST[\'activite_dates\'] as $date) {
        // Use add post meta instead of passing the array directly in
        add_post_meta( $post_id, "dates", esc_attr($date));
    }
}



$dates_gf = get_post_meta( $object->ID, \'dates\', false );

// No need for the is_array() check when using false for the $single variable. Check for empty() instead
if(!empty($dates_gf)) {
    foreach($dates_gf as $date_gf) {
        ?> <input type="text" name="activite_dates_gf[]" value="<?php echo $date_gf; ?>" size="30" /><br /> <?php
    }
} ?>