Question

我使用WordPress的插件WP-Members，我需要修改登录表单。将数组输入函数后，出现以下错误：

＆＃34;致命错误：在null＆＃34;
上调用成员函数get_text（）

这是我在functions.php中的代码

add_filter( 'wpmem_login_form', 'my_login_form_filter' );

function my_login_form_filter( $form, $action = 'login' )
 {
      /**
     * The login form is brought in with $form
     * You can append to it or filter it
     *
     * $action specifies the form being constructed. It
     * can be: login|pwdreset|pwdchange
     */

$form = array(
    array(
        'name'   => $wpmem->get_text( "login_username" ), 
        'type'   => 'text', 
        'tag'    => 'log',
        'class'  => 'username',
        'div'    => 'div_text',
    ),
    array( 
        'name'   => $wpmem->get_text( "login_password" ), 
        'type'   => 'password', 
        'tag'    => 'pwd', 
        'class'  => 'password',
        'div'    => 'div_text',
    ),
    array(
        'name'   => $wpmem->get_text( "login_number" ), 
        'type'   => 'text', 
        'tag'    => 'log', 
        'class'  => 'username',
        'div'    => 'div_text',)
);

return $form;
}

这是插件代码的一部分：

if ( ! function_exists( 'wpmem_inc_login' ) ):
            /**
             * Login Dialog.
             *
             * Loads the login form for user login.
             *
             * @since 1.8
             *
             * @global object $wpmem        The WP_Members object.
             * @global string $wpmem_regchk The WP-Members message   container.
             * @global object $post         The WordPress Post object.
             *
             * @param  string $page
             * @param  string $redirect_to
             * @return string $str         The generated html for the login form.
             */
            function wpmem_inc_login( $page = "page", $redirect_to = null, $show = 'show' ) {

                global $wpmem, $wpmem_regchk, $post;

                $str = '';

                if ( $page == "page" ) {

                     if ( $wpmem_regchk != "success" ) {

                        $dialogs = get_option( 'wpmembers_dialogs' );

                        // This shown above blocked content.
                        $msg = $wpmem->get_text( 'restricted_msg' );
                        $msg = ( $dialogs['restricted_msg'] == $msg ) ? $msg : __( stripslashes( $dialogs['restricted_msg'] ), 'wp-members' );
                        $str = "<p>$msg</p>";

                        /**
                         * Filter the post restricted message.
                         *
                         * @since 2.7.3
                         *
                         * @param string $str The post restricted message.
                         */
                        $str = apply_filters( 'wpmem_restricted_msg', $str );

                    }   
                } 

                // Create the default inputs.
                $default_inputs = array(
                    array(
                        'name'   => $wpmem->get_text( 'login_username' ), 
                        'type'   => 'text', 
                        'tag'    => 'log',
                        'class'  => 'username',
                        'div'    => 'div_text',
                    ),
                    array( 
                        'name'   => $wpmem->get_text( 'login_password' ), 
                        'type'   => 'password', 
                        'tag'    => 'pwd', 
                        'class'  => 'password',
                        'div'    => 'div_text',
                    ),
                );

                /**
                 * Filter the array of login form fields.
                 *
                 * @since 2.9.0
                 *
                 * @param array $default_inputs An array matching the                      elements used by default.
                 */
                $default_inputs = apply_filters( 'wpmem_inc_login_inputs', $default_inputs );

                $defaults = array( 
                    'heading'      => $wpmem->get_text( 'login_heading' ), 
                    'action'       => 'login', 
                    'button_text'  => $wpmem->get_text( 'login_button' ),
                    'inputs'       => $default_inputs,
                    'redirect_to'  => $redirect_to,
                );  

                /**
                 * Filter the arguments to override login form defaults.
                 *
                 * @since 2.9.0
                 *
                 * @param array $args An array of arguments to use. Default null.
                 */
                $args = apply_filters( 'wpmem_inc_login_args', '' );

                $arr  = wp_parse_args( $args, $defaults );

                $str  = ( $show == 'show' ) ? $str . wpmem_login_form( $page, $arr ) : $str;

                return $str;
            }
            endif;

Answer 1

好像你试图在对象$Services = @' SUPER-PC,Microsoft Office ClickToRun Service,ClickToRunSvc,C:\Program Files\Microsoft Office 15\ClientX64\OfficeClickToRun.exe /service,Auto SUPER-PC,Adobe Acrobat Update Service,AdobeARMservice,C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\armsvc.exe,Auto '@ # I prefer a more OS-agnostic newline pattern $Services = $Services -split "`r?`n" # Create a new array, defaults to Object[], so can contain arrays as well $MultiDimensionalServices = @() # Iterate over each string in $Services foreach($ServiceString in $Services){ # use the unary array operator (,) to avoid flattening the array $MultiDimensionalServices += ,@($ServiceString -split ',') }上调用函数get_text()，但它是$wpmem。

您可以尝试在null函数定义之上添加global $wpmem;，如下所示：

my_login_form_filter

Answer 2

$wpmem在您的函数中为null。将global $wpmem添加到您的函数以使用全局值。

Answer 3

问题是您正在尝试使用作为对象一部分的方法，但是该对象在使用它的上下文中不存在。

get_text()是WP_Members对象$wpmem（$wpmem->get_text()）的方法。

这是一个全局声明的对象，因此，只要您在已定义的地方使用它，就可以通过在函数开始时声明全局变量来访问它：

global $wpmem;

但是插件有一个API function for this method，因此您可以使用直接函数而不是对象方法-这样，已经为您声明了对象

因此，请使用$wpmem->get_text()而不是wpmem_gettext()。

另一个问题是您正在混淆过滤器。您的过滤器代码正在使用wpmem_login_form。虽然这是插件中的合法过滤器挂钩，但这并不是正确的挂钩（甚至在您发布的函数中也没有定义）。您需要使用wpmem_inc_login_inputs来更改输入（在发布的函数中查找定义位置）。否则，您尝试执行的操作将永远无法进行。

它应该是这样：

add_filter( 'wpmem_inc_login_inputs', 'my_login_form_filter' );

function my_login_form_filter() {

    $form = array(
        array(
            'name'   => wpmem_gettext( "login_username" ), 
            'type'   => 'text', 
            'tag'    => 'log',
            'class'  => 'username',
            'div'    => 'div_text',
        ),
        array( 
            'name'   => wpmem_gettext( "login_password" ), 
            'type'   => 'password', 
            'tag'    => 'pwd', 
            'class'  => 'password',
            'div'    => 'div_text',
        ),
        array(
            'name'   => "Login Number", // "login_number" does not exist in wpmem_gettext(). 
            'type'   => 'text', 
            'tag'    => 'log', 
            'class'  => 'username',
            'div'    => 'div_text',
        )
    );

    return $default_inputs;
}

＆＃34;致命错误：在null＆＃34;上调用成员函数get_text（）在wordpress

3 个答案: