我相信您正在使用ajax引用process\\u表单。php。然而，访问任何ajax的正确方法是通过wp-admin/admin-ajax.php.

从中提取所有代码process_form.php 到函数（可以添加到主插件文件）：

function my_process_form() {
    //...code from process_form.php
    if ( ! $error ) { //your error boolean
        return wp_json_success(); //recommend for return an success as JSON
    } else {
        return wp_json_error(); //recommend for return an error as JSON
    }
}

然后，向ajax操作添加一个挂钩，如下所示：

//You can choose one of those or leave both:
add_action( \'wp_ajax_my_process_form\', \'my_process_form\' ); //Only logged users
add_action( \'wp_ajax_nopriv_my_process_form\', \'my_process_form\' ); //Not logged users

在Javascript中，必须调用urlwp-admin/admin-ajax.php 在本例中，使用钩住的参数my_proccess_form:

PHP调用JS并发送admin-ajax.php URL：

wp_enqueue_script( \'my-custom-script\', plugins_url( \'/js/my_custom.js\', __FILE__ ), array(\'jquery\') );

wp_localize_script(
    \'my-custom-script\', //JS referenced above
    \'ajax_object\', //Javascript Object
    array(
        \'ajax_url\' => admin_url( \'admin-ajax.php\' ) //Same as wp-admin/admin.ajax.php
    )
);

我将向您发送一个使用jQuery进行AJAX请求的示例：

jQuery.ajax({
     type : "post",
     dataType : "json", //Example only
     url : ajax_object.ajax_url, //From wp_localize_script
     data : { //can use jQuery.serialize() as well
         action: "my_process_form", //used on wp_ajax_(action) and wp_ajax_nopriv_(action)
         post_id : 1, //Dummy id, more parameters, use comma
         nonce: nonce //Read https://codex.wordpress.org/Function_Reference/wp_create_nonce
     },
     success: function( response ) {
         if( response.success ) {
             //Success JS Process
         } else {
             alert("Error");
             console.log( response );
         }
     }
});

参考文献

https://codex.wordpress.org/AJAX_in_Plugins https://codex.wordpress.org/Plugin_API/Action_Reference/wp_ajax_(action) https://codex.wordpress.org/Plugin_API/Action_Reference/wp_ajax_nopriv_(action) https://codex.wordpress.org/Function_Reference/wp_localize_script

----更新----

如果您喜欢在没有AJAX的情况下使用$\\u POST，那么可以使用挂钩admin_post_(action)

HTML示例：

<form action="<?php echo admin_url(\'admin-post.php\'); ?>" method="post">
  <input type="hidden" name="action" value="my_process_form">
  <input type="text" name="name">
  <input type="email" name="email">
  <input type="submit" value="Submit">
</form>

PHP示例：

add_action( \'admin_post_my_process_form\', \'my_process_form\' );

function my_process_form() {
    // The process_form.php code here
}