早晨
我有个电话functions.php 在我的主题目录中包含一个自定义元框php文件，名为：/metaboxes/home-meta.php
调用代码如下：
add_action( \'add_meta_boxes_page\',\'load_home_meta\' );
function load_home_meta() {
$post_id = $_GET[\'post\'] ? $_GET[\'post\'] : $_POST[\'post_ID\'] ;
if($post_id == \'104\'){
include( get_template_directory() . \'/metaboxes/home-meta.php\' );
}
}
include正在工作（有一个
add_meta_boxes 函数包装在
home-meta.php 下面的文件（更新代码））。
然而，我在第一次设置每个元数据库时都会出错case 在switch 用于回调函数。错误示例如下：
警告：为/Users/[my\\u mac]/Sites/[site\\u dir]/wp content/themes/[site\\u themes]/metaboxes/home meta中的foreach（）提供的参数无效。php在线224
这个home-meta.php 代码为：
<?php
/**
* Home Page Custom Meta Content
*
**/
add_meta_box(
\'home_meta_box\', // $id
\'Home Page Content\', // $title
\'show_home_meta_box\', // $callback
\'page\', // $page
\'normal\', // $context
\'high\'); // $priority
add_meta_box(
\'home_meta_box_lower_1\', // $id
\'Home Lower Left\', // $title
\'show_home_meta_box_lower_left\', // $callback
\'page\', // $page
\'normal\', // $context
\'high\'); // $priority
add_meta_box(
\'home_meta_box_lower_2\', // $id
\'Home Lower Center\', // $title
\'show_home_meta_box_lower_center\', // $callback
\'page\', // $page
\'normal\', // $context
\'high\'); // $priority
add_meta_box(
\'home_meta_box_lower_3\', // $id
\'Home Lower Right\', // $title
\'show_home_meta_box_lower_right\', // $callback
\'page\', // $page
\'normal\', // $context
\'high\'); // $priority
// Creating Array for Fields
$prefix = \'home_\';
$home_meta_fields = array(
array(
\'label\' => \'Caption Title\',
\'desc\' => \'Upper section H2 caption title.\',
\'id\' => $prefix.\'title\',
\'type\' => \'text\'
),
array(
\'label\' => \'Caption Sub Title\',
\'desc\' => \'Upper section H3 caption title.\',
\'id\' => $prefix.\'sub_title\',
\'type\' => \'text\'
),
array(
\'label\'=> \'Caption\',
\'desc\' => \'Caption text block.\',
\'id\' => $prefix.\'caption\',
\'type\' => \'textarea\'
),
array(
\'label\' => \'Caption Image\',
\'desc\' => \'Upload a pre-cropped 1140px wide x 530px tall web-optimized image.\',
\'id\' => $prefix.\'image\',
\'type\' => \'image\'
)
);// end caption array
$prefix2 = \'home_lower_left_\';
$home_meta_fields_lower_left = array(
array(
\'label\' => \'Column Title\',
\'desc\' => \'H2 title for column.\',
\'id\' => $prefix2.\'title\',
\'type\' => \'text\'
),
array(
\'label\' => \'Column Image\',
\'desc\' => \'Upload a pre-cropped 360px wide x 300px tall web-optimized image.\',
\'id\' => $prefix2.\'image\',
\'type\' => \'image\'
),
array(
\'label\' => \'Column Sub-Title\',
\'desc\' => \'H3 sub-title above text block.\',
\'id\' => $prefix2.\'sub_title\',
\'type\' => \'text\'
),
array(
\'label\'=> \'Text block\',
\'desc\' => \'Caption text block.\',
\'id\' => $prefix2.\'caption\',
\'type\' => \'textarea\'
),
array(
\'label\' => \'Button Label\',
\'desc\' => \'Button link label (what user reads on button).\',
\'id\' => $prefix2.\'btn_label\',
\'type\' => \'text\'
),
array(
\'label\' => \'Button Title Tag\',
\'desc\' => \'On hover and SEO text.\',
\'id\' => $prefix2.\'btn_title_tag\',
\'type\' => \'text\'
),
array(
\'label\' => \'Button URL\',
\'desc\' => \'URL where button links to. Enter http:// to work.\',
\'id\' => $prefix2.\'btn_url\',
\'type\' => \'text\'
)
);// end lower left array
$prefix3 = \'home_lower_center_\';
$home_meta_fields_lower_center = array(
array(
\'label\' => \'Column Title\',
\'desc\' => \'H2 title for column.\',
\'id\' => $prefix3.\'title\',
\'type\' => \'text\'
),
array(
\'label\' => \'Column Image\',
\'desc\' => \'Upload a pre-cropped 360px wide x 300px tall web-optimized image.\',
\'id\' => $prefix3.\'image\',
\'type\' => \'image\'
),
array(
\'label\' => \'Column Sub-Title\',
\'desc\' => \'H3 sub-title above text block.\',
\'id\' => $prefix3.\'sub_title\',
\'type\' => \'text\'
),
array(
\'label\'=> \'Text block\',
\'desc\' => \'Caption text block.\',
\'id\' => $prefix3.\'caption\',
\'type\' => \'textarea\'
),
array(
\'label\' => \'Button Label\',
\'desc\' => \'Button link label (what user reads on button).\',
\'id\' => $prefix3.\'btn_label\',
\'type\' => \'text\'
),
array(
\'label\' => \'Button Title Tag\',
\'desc\' => \'On hover and SEO text.\',
\'id\' => $prefix3.\'btn_title_tag\',
\'type\' => \'text\'
),
array(
\'label\' => \'Button URL\',
\'desc\' => \'URL where button links to. Enter http:// to work.\',
\'id\' => $prefix3.\'btn_url\',
\'type\' => \'text\'
)
);// end lower center array
$prefix4 = \'home_lower_right_\';
$home_meta_fields_lower_right = array(
array(
\'label\' => \'Column Title\',
\'desc\' => \'H2 title for column.\',
\'id\' => $prefix4.\'title\',
\'type\' => \'text\'
),
array(
\'label\' => \'Column Image\',
\'desc\' => \'Upload a pre-cropped 360px wide x 300px tall web-optimized image.\',
\'id\' => $prefix4.\'image\',
\'type\' => \'image\'
),
array(
\'label\' => \'Column Sub-Title\',
\'desc\' => \'H3 sub-title above text block.\',
\'id\' => $prefix4.\'sub_title\',
\'type\' => \'text\'
),
array(
\'label\'=> \'Text block\',
\'desc\' => \'Caption text block.\',
\'id\' => $prefix4.\'caption\',
\'type\' => \'textarea\'
),
array(
\'label\' => \'Button Label\',
\'desc\' => \'Button link label (what user reads on button).\',
\'id\' => $prefix4.\'btn_label\',
\'type\' => \'text\'
),
array(
\'label\' => \'Button Title Tag\',
\'desc\' => \'On hover and SEO text.\',
\'id\' => $prefix4.\'btn_title_tag\',
\'type\' => \'text\'
),
array(
\'label\' => \'Button URL\',
\'desc\' => \'URL where button links to. Enter http:// to work.\',
\'id\' => $prefix4.\'btn_url\',
\'type\' => \'text\'
)
);// end lower right array
//The Callback
function show_home_meta_box() {
global $home_meta_fields, $post;
// Using nonce for verification
echo \'<input type="hidden" name="home_meta_box_nonce" value="\'.wp_create_nonce(basename(__FILE__)).\'" />\';
//Begin field table and loop
echo \'<table class="form-table">\';
foreach ($home_meta_fields as $field) {
// get value of this field if it exists for this page
$meta = get_post_meta($post->ID, $field[\'id\'], true);
// begin a table row with
echo \'<tr>
<th><label for="\'.$field[\'id\'].\'">\'.$field[\'label\'].\'</label></th>
<td>\';
switch($field[\'type\']) {
// case items will go here
// text
case \'text\':
echo \'<input type="text" name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'" value="\'.$meta.\'" size="30" />
<br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
// textarea
case \'textarea\':
echo \'<textarea name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'" cols="60" rows="4">\'.$meta.\'</textarea>
<br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
case \'image\':
$image = get_template_directory_uri().\'/library/images/img-preview-blank.png\';
echo \'<span class="custom_default_image" style="display:none">\'.$image.\'</span>\';
if ($meta) { $image = wp_get_attachment_image_src($meta, \'medium\'); $image = $image[0]; }
echo \'<input name="\'.$field[\'id\'].\'" type="hidden" class="custom_upload_image" value="\'.$meta.\'" />
<img src="\'.$image.\'" class="custom_preview_image" style="max-width:300px" alt="" /><br />
<input class="custom_upload_image_button button" type="button" value="Choose Image" />
<small> <a href="#" class="custom_clear_image_button">Remove Image</a></small>
<br clear="all" /><span class="description">\'.$field[\'desc\'].\'\';
break;
} // end switch
echo \'</td></tr>\';
} // end foreach
echo \'</table>\'; // end table
}
// Save the Data
function save_home_meta($post_id) {
global $home_meta_fields;
// verify nonce
if (!wp_verify_nonce($_POST[\'home_meta_box_nonce\'], basename(__FILE__)))
return $post_id;
// check autosave
if (defined(\'DOING_AUTOSAVE\') && DOING_AUTOSAVE)
return $post_id;
// check permissions
if (\'page\' == $_POST[\'post_type\']) {
if (!current_user_can(\'edit_page\', $post_id))
return $post_id;
} elseif (!current_user_can(\'edit_post\', $post_id)) {
return $post_id;
}
// loop through fields and save the data
foreach ($home_meta_fields as $field) {
$old = get_post_meta($post_id, $field[\'id\'], true);
$new = $_POST[$field[\'id\']];
if ($new && $new != $old) {
update_post_meta($post_id, $field[\'id\'], $new);
} elseif (\'\' == $new && $old) {
delete_post_meta($post_id, $field[\'id\'], $old);
}
} // end foreach
}
add_action(\'save_post\', \'save_home_meta\');
// end Upper Home Content
// Lower Left
//The Callback
function show_home_meta_box_lower_left() {
global $home_meta_fields_lower_left, $post;
// Using nonce for verification
echo \'<input type="hidden" name="home_meta_box_left_nonce" value="\'.wp_create_nonce(basename(__FILE__)).\'" />\';
//Begin field table and loop
echo \'<table class="form-table">\';
foreach ($home_meta_fields_lower_left as $field) {
// get value of this field if it exists for this page
$meta = get_post_meta($post->ID, $field[\'id\'], true);
// begin a table row with
echo \'<tr>
<th><label for="\'.$field[\'id\'].\'">\'.$field[\'label\'].\'</label></th>
<td>\';
switch($field[\'type\']) {
// case items will go here
// text
case \'text\':
echo \'<input type="text" name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'" value="\'.$meta.\'" size="30" />
<br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
// textarea
case \'textarea\':
echo \'<textarea name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'" cols="60" rows="4">\'.$meta.\'</textarea>
<br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
case \'image\':
$image = get_template_directory_uri().\'/library/images/img-preview-blank.png\';
echo \'<span class="custom_default_image" style="display:none">\'.$image.\'</span>\';
if ($meta) { $image = wp_get_attachment_image_src($meta, \'medium\'); $image = $image[0]; }
echo \'<input name="\'.$field[\'id\'].\'" type="hidden" class="custom_upload_image" value="\'.$meta.\'" />
<img src="\'.$image.\'" class="custom_preview_image" style="max-width:300px" alt="" /><br />
<input class="custom_upload_image_button button" type="button" value="Choose Image" />
<small> <a href="#" class="custom_clear_image_button">Remove Image</a></small>
<br clear="all" /><span class="description">\'.$field[\'desc\'].\'\';
break;
} // end switch
echo \'</td></tr>\';
} // end foreach
echo \'</table>\'; // end table
}
// Save the Data
function save_home_meta_lower_left($post_id) {
global $home_meta_fields_lower_left;
// verify nonce
if (!wp_verify_nonce($_POST[\'home_meta_box_left_nonce\'], basename(__FILE__)))
return $post_id;
// check autosave
if (defined(\'DOING_AUTOSAVE\') && DOING_AUTOSAVE)
return $post_id;
// check permissions
if (\'page\' == $_POST[\'post_type\']) {
if (!current_user_can(\'edit_page\', $post_id))
return $post_id;
} elseif (!current_user_can(\'edit_post\', $post_id)) {
return $post_id;
}
// loop through fields and save the data
foreach ($home_meta_fields_lower_left as $field) {
$old = get_post_meta($post_id, $field[\'id\'], true);
$new = $_POST[$field[\'id\']];
if ($new && $new != $old) {
update_post_meta($post_id, $field[\'id\'], $new);
} elseif (\'\' == $new && $old) {
delete_post_meta($post_id, $field[\'id\'], $old);
}
} // end foreach
}
add_action(\'save_post\', \'save_home_meta_lower_left\');
// end lower left
// Lower Center Column
//The Callback
function show_home_meta_box_lower_center() {
global $home_meta_fields_lower_center, $post;
// Using nonce for verification
echo \'<input type="hidden" name="home_meta_box_center_nonce" value="\'.wp_create_nonce(basename(__FILE__)).\'" />\';
//Begin field table and loop
echo \'<table class="form-table">\';
foreach ($home_meta_fields_lower_center as $field) {
// get value of this field if it exists for this page
$meta = get_post_meta($post->ID, $field[\'id\'], true);
// begin a table row with
echo \'<tr>
<th><label for="\'.$field[\'id\'].\'">\'.$field[\'label\'].\'</label></th>
<td>\';
switch($field[\'type\']) {
// case items will go here
// text
case \'text\':
echo \'<input type="text" name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'" value="\'.$meta.\'" size="30" />
<br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
// textarea
case \'textarea\':
echo \'<textarea name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'" cols="60" rows="4">\'.$meta.\'</textarea>
<br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
case \'image\':
$image = get_template_directory_uri().\'/library/images/img-preview-blank.png\';
echo \'<span class="custom_default_image" style="display:none">\'.$image.\'</span>\';
if ($meta) { $image = wp_get_attachment_image_src($meta, \'medium\'); $image = $image[0]; }
echo \'<input name="\'.$field[\'id\'].\'" type="hidden" class="custom_upload_image" value="\'.$meta.\'" />
<img src="\'.$image.\'" class="custom_preview_image" style="max-width:300px" alt="" /><br />
<input class="custom_upload_image_button button" type="button" value="Choose Image" />
<small> <a href="#" class="custom_clear_image_button">Remove Image</a></small>
<br clear="all" /><span class="description">\'.$field[\'desc\'].\'\';
break;
} // end switch
echo \'</td></tr>\';
} // end foreach
echo \'</table>\'; // end table
}
// Save the Data
function save_home_meta_lower_center($post_id) {
global $home_meta_fields_lower_center;
// verify nonce
if (!wp_verify_nonce($_POST[\'home_meta_box_center_nonce\'], basename(__FILE__)))
return $post_id;
// check autosave
if (defined(\'DOING_AUTOSAVE\') && DOING_AUTOSAVE)
return $post_id;
// check permissions
if (\'page\' == $_POST[\'post_type\']) {
if (!current_user_can(\'edit_page\', $post_id))
return $post_id;
} elseif (!current_user_can(\'edit_post\', $post_id)) {
return $post_id;
}
// loop through fields and save the data
foreach ($home_meta_fields_lower_center as $field) {
$old = get_post_meta($post_id, $field[\'id\'], true);
$new = $_POST[$field[\'id\']];
if ($new && $new != $old) {
update_post_meta($post_id, $field[\'id\'], $new);
} elseif (\'\' == $new && $old) {
delete_post_meta($post_id, $field[\'id\'], $old);
}
} // end foreach
}
add_action(\'save_post\', \'save_home_meta_lower_center\');
// end lower center
// Lower Right Column
//The Callback
function show_home_meta_box_lower_right() {
global $home_meta_fields_lower_right, $post;
// Using nonce for verification
echo \'<input type="hidden" name="home_meta_box_right_nonce" value="\'.wp_create_nonce(basename(__FILE__)).\'" />\';
//Begin field table and loop
echo \'<table class="form-table">\';
foreach ($home_meta_fields_lower_right as $field) {
// get value of this field if it exists for this page
$meta = get_post_meta($post->ID, $field[\'id\'], true);
// begin a table row with
echo \'<tr>
<th><label for="\'.$field[\'id\'].\'">\'.$field[\'label\'].\'</label></th>
<td>\';
switch($field[\'type\']) {
// case items will go here
// text
case \'text\':
echo \'<input type="text" name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'" value="\'.$meta.\'" size="30" />
<br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
// textarea
case \'textarea\':
echo \'<textarea name="\'.$field[\'id\'].\'" id="\'.$field[\'id\'].\'" cols="60" rows="4">\'.$meta.\'</textarea>
<br /><span class="description">\'.$field[\'desc\'].\'</span>\';
break;
case \'image\':
$image = get_template_directory_uri().\'/library/images/img-preview-blank.png\';
echo \'<span class="custom_default_image" style="display:none">\'.$image.\'</span>\';
if ($meta) { $image = wp_get_attachment_image_src($meta, \'medium\'); $image = $image[0]; }
echo \'<input name="\'.$field[\'id\'].\'" type="hidden" class="custom_upload_image" value="\'.$meta.\'" />
<img src="\'.$image.\'" class="custom_preview_image" style="max-width:300px" alt="" /><br />
<input class="custom_upload_image_button button" type="button" value="Choose Image" />
<small> <a href="#" class="custom_clear_image_button">Remove Image</a></small>
<br clear="all" /><span class="description">\'.$field[\'desc\'].\'\';
break;
} // end switch
echo \'</td></tr>\';
} // end foreach
echo \'</table>\'; // end table
}
// Save the Data
function save_home_meta_lower_right($post_id) {
global $home_meta_fields_lower_right;
// verify nonce
if (!wp_verify_nonce($_POST[\'home_meta_box_right_nonce\'], basename(__FILE__)))
return $post_id;
// check autosave
if (defined(\'DOING_AUTOSAVE\') && DOING_AUTOSAVE)
return $post_id;
// check permissions
if (\'page\' == $_POST[\'post_type\']) {
if (!current_user_can(\'edit_page\', $post_id))
return $post_id;
} elseif (!current_user_can(\'edit_post\', $post_id)) {
return $post_id;
}
// loop through fields and save the data
foreach ($home_meta_fields_lower_right as $field) {
$old = get_post_meta($post_id, $field[\'id\'], true);
$new = $_POST[$field[\'id\']];
if ($new && $new != $old) {
update_post_meta($post_id, $field[\'id\'], $new);
} elseif (\'\' == $new && $old) {
delete_post_meta($post_id, $field[\'id\'], $old);
}
} // end foreach
}
add_action(\'save_post\', \'save_home_meta_lower_right\');
// end lower right
?>
