已弃用：与 class 同名的方法在 PHP 的未来版本中将不再是构造函数

Question

我该如何解决这个错误？

facebook.php.php 文件:

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<?php
/**
 * Plugin Name: Facebook Page Widget
 */

// Load widget
add_action( 'widgets_init', 'qwis_facebook_load_widget' );

// Register widget
function qwis_facebook_load_widget() {
    register_widget( 'qwis_facebook_widget' );
}

// Widget class
class qwis_facebook_widget extends WP_Widget {

    /**
     * Widget setup.
     */
    function qwis_facebook_widget() {

        // Widget settings
        $widget_ops = array( 'classname' => 'qwis_facebook_widget', 'description' => __('Facebook page widget', 'qwis_facebook_widget') );

        // Widget control settings
        $control_ops = array( 'width' => 250, 'height' => 350, 'id_base' => 'qwis_facebook_widget' );

        // Create the widget
        parent::__construct( 'qwis_facebook_widget', __('Facebook Page', 'qwis_facebook_widget'), $widget_ops, $control_ops );

    }

    /**
     * Display widget
     */
    function widget( $args, $instance ) {
        extract( $args );

        // Variables from the widget settings
        $title = apply_filters('widget_title', $instance['title'] );
        $page_url = $instance['page_url'];
        $tabs = $instance['tabs'];
        $header = $instance['header'];
        $cover = $instance['cover'];
        $faces = $instance['faces'];

        // Before widget (defined by theme functions file)
        echo $before_widget;

        // Display widget title
        if ( $title )
            echo $before_title . $title . $after_title;

        ?>
            <div id="fb-root"></div>

            <script>(function(d, s, id) {
              var js, fjs = d.getElementsByTagName(s)[0];
              if (d.getElementById(id)) return;
              js = d.createElement(s); js.id = id;
              js.src = "//connect.facebook.net/ro_RO/sdk.js#xfbml=1&version=v2.7";
              fjs.parentNode.insertBefore(js, fjs);
            }(document, 'script', 'facebook-jssdk'));</script>

            <div class="fb-page" data-href="<?php echo esc_url($page_url); ?>" data-tabs="<?php echo ($tabs); ?>" data-small-header="<?php if($header) { echo 'true'; } else { echo 'false'; } ?>" data-adapt-container-width="true" data-hide-cover="<?php if($cover) { echo 'true'; } else { echo 'false'; } ?>" data-show-facepile="<?php if($faces) { echo 'true'; } else { echo 'false'; } ?>"></div>

        <?php

        // After widget (defined by theme functions file)
        echo $after_widget;
    }

    /**
     * Update the widget
     */
    function update( $new_instance, $old_instance ) {
        $instance = $old_instance;

        // Strip tags to remove HTML (important for text inputs)
        $instance['title'] = strip_tags( $new_instance['title'] );
        $instance['page_url'] = strip_tags( $new_instance['page_url'] );
        $instance['tabs'] = strip_tags( $new_instance['tabs'] );
        $instance['header'] = strip_tags( $new_instance['header'] );
        $instance['cover'] = strip_tags( $new_instance['cover'] );
        $instance['faces'] = strip_tags( $new_instance['faces'] );

        return $instance;
    }


    function form( $instance ) {

        // Set up some default widget settings
        $defaults = array( 'title' => 'Find me on Facebook', 'page_url' => '', 'tabs' => '', 'header' => false, 'cover' => false, 'faces' => false );
        $instance = wp_parse_args( (array) $instance, $defaults ); ?>

        <!-- Widget Title: Text Input -->
        <p>
            <label for="<?php echo $this->get_field_id( 'title' ); ?>">Title:</label>
            <input type="text" class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" value="<?php echo $instance['title']; ?>" />
        </p>

        <!-- page_url -->
        <p>
            <label for="<?php echo $this->get_field_id( 'page_url' ); ?>">Facebook Page URL:</label>
            <input type="text" class="widefat" id="<?php echo $this->get_field_id( 'page_url' ); ?>" name="<?php echo $this->get_field_name( 'page_url' ); ?>" value="<?php echo $instance['page_url']; ?>" />
            <small>e.g. http://www.facebook.com/facebook</small>
        </p>

        <!-- tabs -->
        <p>
            <label for="<?php echo $this->get_field_id( 'tabs' ); ?>">Tabs:</label>
            <input type="text" class="widefat" id="<?php echo $this->get_field_id( 'tabs' ); ?>" name="<?php echo $this->get_field_name( 'tabs' ); ?>" value="<?php echo $instance['tabs']; ?>" />
            <small>e.g. timeline, messages, events</small>
        </p>

        <!-- header -->
        <p>
            <input type="checkbox" id="<?php echo $this->get_field_id( 'header' ); ?>" name="<?php echo $this->get_field_name( 'header' ); ?>" <?php checked( (bool) $instance['header'], true ); ?> />
            <label for="<?php echo $this->get_field_id( 'header' ); ?>">Use Small Header</label>
        </p>

        <!-- cover -->
        <p>
            <input type="checkbox" id="<?php echo $this->get_field_id( 'cover' ); ?>" name="<?php echo $this->get_field_name( 'cover' ); ?>" <?php checked( (bool) $instance['cover'], true ); ?> />
            <label for="<?php echo $this->get_field_id( 'cover' ); ?>">Hide Cover Photo</label>
        </p>

        <!-- faces -->
        <p>
            <input type="checkbox" id="<?php echo $this->get_field_id( 'faces' ); ?>" name="<?php echo $this->get_field_name( 'faces' ); ?>" <?php checked( (bool) $instance['faces'], true ); ?> />
            <label for="<?php echo $this->get_field_id( 'faces' ); ?>">Show Friend's Faces</label>
        </p>

    <?php
    }
}

?>

Answer 1

一些研究...

你的错误是，

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP

在 google 中输入“methods same name as class php”，前两个结果是 Stack Overflow 问题，其中包含大量信息。

第三个结果是http://php.net/manual/en/language.oop5.decon.php。 php.net 对 PHP 的评价总是值得一读。单击 Google 的 link 并向下滚动一点找到...

For backwards compatibility with PHP 3 and 4, if PHP cannot find a __construct() function for a given class, and the class did not inherit one from a parent class, it will search for the old-style constructor function, by the name of the class.

和...

Warning Old style constructors are DEPRECATED in PHP 7.0, and will be removed in a future version. You should always use __construct() in new code.

结论...

根据该研究，我们可以确定您需要快速更新您的代码。替换行，

function qwis_facebook_widget() {

和

function __construct() {

已弃用：与 class 同名的方法在 PHP 的未来版本中将不再是构造函数

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP

php

wordpress

facebook

widget

一些研究...

结论...