wordpress - stdClass wordpress插件错误

Question

当我访问 wordpress dashbord 以安装新插件时，如前所述发生错误

stdClass::$plugin in /var/sentora/hostdata/websitenligne/public_html/sme2/wp-includes/class-wp-list-util.php on line 150

public function pluck( $field, $index_key = null ) {
		if ( ! $index_key ) {
			/*
			 * This is simple. Could at some point wrap array_column()
			 * if we knew we had an array of arrays.
			 */
			foreach ( $this->output as $key => $value ) {
				if ( is_object( $value ) ) {
					$this->output[ $key ] = $value->$field;
				} else {
					$this->output[ $key ] = $value[ $field ];
				}
			}
			return $this->output;
		}

		/*
		 * When index_key is not set for a particular item, push the value
		 * to the end of the stack. This is how array_column() behaves.
		 */
		$newlist = array();
		foreach ( $this->output as $value ) {
			if ( is_object( $value ) ) {
				if ( isset( $value->$index_key ) ) {
					$newlist[ $value->$index_key ] = $value->$field;
				} else {
					$newlist[] = $value->$field;
				}
			} else {
				if ( isset( $value[ $index_key ] ) ) {
					$newlist[ $value[ $index_key ] ] = $value[ $field ];
				} else {
					$newlist[] = $value[ $field ];
				}
			}
		}

		$this->output = $newlist;

		return $this->output;
	}

错误是什么？

Answer 1

这个问题似乎是第一个 introduced in version 4.7 ，这是由于 wp-includes/class-wp-list-util.php 没有检查是否设置了对象属性。

好像是is still present在 WordPress 5.2.1(本文发布时最新版本)中。第 152 行应该是这样的:

$this->output[ $key ] = isset( $value->$field ) ? $value->$field : null;

无论如何... 要删除此警告，请编辑您的 wp-config.php 并更改:

define( 'WP_DEBUG', true );

...对此(或完全注释掉 WP_DEBUG 行):

define( 'WP_DEBUG', false );

或者，如果你想离开 WP_DEBUG已启用但将其输出限制为 wp-content/debug.log，您可以改为添加:

define( 'WP_DEBUG_LOG', true );
define( 'WP_DEBUG_DISPLAY', false );

• WP_DEBUG (特别是 WP_DEBUG_LOG 应该不在生产环境或任何可公开访问的站点(例如 QA/staging)中启用，除非您知道自己在做什么(否则敏感信息可能会被泄露)透露)。