WordPress 3.5 新增了一对非常有用的挂钩，可以快速在WordPress后台文章编辑器的上方或下方添加提示内容，下面是一个简单的例子，直接将代码添加到主题的 functions.php 文件：
function below_the_title() {
echo '<h3>在编辑器上方添加的提示内容</h3>';
}
add_action( 'edit_form_after_title', 'below_the_title' );
function below_the_editor() {
echo '<h4>在编辑器下方添加的提示内容</h4>';
}
add_action( 'edit_form_after_editor', 'below_the_editor' ); |
function below_the_title() {
echo '<h3>在编辑器上方添加的提示内容</h3>';
}
add_action( 'edit_form_after_title', 'below_the_title' );
function below_the_editor() {
echo '<h4>在编辑器下方添加的提示内容</h4>';
}
add_action( 'edit_form_after_editor', 'below_the_editor' );
结果如下图所示：
参考资料：http://www.doitwithwp.com/add-a-message-above-or-below-the-post-editor/
来源：
https://www.wpdaxue.com/add-a-message-above-or-below-the-post-editor.html
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