header.phpに記述を追加しようとしたところ、下記エラーで突然更新できなくなりました。。。
致命的なエラーをチェックするためにサイトと通信できないため、PHPの変更は取り消されました。SFTPを使うなど、他の手段でPHPファイルの変更をアップロードする必要があります。
エラーチェック時のWEBアクセスでタイムアウトしているっぽい・・・？が、突然エラーになった原因が分からず暫定的に下記手順にて対処しました。（バージョンアップ時には再度作業が必要なので、備忘メモ）
サーバから wp-admin/includes/file.php を取得して、491行目〜599行目をコメントアウト後、再度アップロード。
↓コメントアウトした箇所
/*
if ( $is_active && 'php' === $extension ) {
$scrape_key = md5( rand() );
$transient = 'scrape_key_' . $scrape_key;
$scrape_nonce = strval( rand() );
set_transient( $transient, $scrape_nonce, 60 ); // It shouldn't take more than 60 seconds to make the two loopback requests.
$cookies = wp_unslash( $_COOKIE );
$scrape_params = array(
'wp_scrape_key' => $scrape_key,
'wp_scrape_nonce' => $scrape_nonce,
);
$headers = array(
'Cache-Control' => 'no-cache',
);
// Include Basic auth in loopback requests.
if ( isset( $_SERVER['PHP_AUTH_USER'] ) && isset( $_SERVER['PHP_AUTH_PW'] ) ) {
$headers['Authorization'] = 'Basic ' . base64_encode( wp_unslash( $_SERVER['PHP_AUTH_USER'] ) . ':' . wp_unslash( $_SERVER['PHP_AUTH_PW'] ) );
}
// Make sure PHP process doesn't die before loopback requests complete.
@set_time_limit( 300 );
// Time to wait for loopback requests to finish.
$timeout = 100;
$needle_start = "###### wp_scraping_result_start:$scrape_key ######";
$needle_end = "###### wp_scraping_result_end:$scrape_key ######";
// Attempt loopback request to editor to see if user just whitescreened themselves.
if ( $plugin ) {
$url = add_query_arg( compact( 'plugin', 'file' ), admin_url( 'plugin-editor.php' ) );
} elseif ( isset( $stylesheet ) ) {
$url = add_query_arg(
array(
'theme' => $stylesheet,
'file' => $file,
),
admin_url( 'theme-editor.php' )
);
} else {
$url = admin_url();
}
$url = add_query_arg( $scrape_params, $url );
$r = wp_remote_get( $url, compact( 'cookies', 'headers', 'timeout' ) );
$body = wp_remote_retrieve_body( $r );
$scrape_result_position = strpos( $body, $needle_start );
$loopback_request_failure = array(
'code' => 'loopback_request_failed',
'message' => __( 'Unable to communicate back with site to check for fatal errors, so the PHP change was reverted. You will need to upload your PHP file change by some other means, such as by using SFTP.' ),
);
$json_parse_failure = array(
'code' => 'json_parse_error',
);
$result = null;
if ( false === $scrape_result_position ) {
$result = $loopback_request_failure;
} else {
$error_output = substr( $body, $scrape_result_position + strlen( $needle_start ) );
$error_output = substr( $error_output, 0, strpos( $error_output, $needle_end ) );
$result = json_decode( trim( $error_output ), true );
if ( empty( $result ) ) {
$result = $json_parse_failure;
}
}
// Try making request to homepage as well to see if visitors have been whitescreened.
if ( true === $result ) {
$url = home_url( '/' );
$url = add_query_arg( $scrape_params, $url );
$r = wp_remote_get( $url, compact( 'cookies', 'headers', 'timeout' ) );
$body = wp_remote_retrieve_body( $r );
$scrape_result_position = strpos( $body, $needle_start );
if ( false === $scrape_result_position ) {
$result = $loopback_request_failure;
} else {
$error_output = substr( $body, $scrape_result_position + strlen( $needle_start ) );
$error_output = substr( $error_output, 0, strpos( $error_output, $needle_end ) );
$result = json_decode( trim( $error_output ), true );
if ( empty( $result ) ) {
$result = $json_parse_failure;
}
}
}
delete_transient( $transient );
if ( true !== $result ) {
// Roll-back file change.
file_put_contents( $real_file, $previous_content );
if ( function_exists( 'opcache_invalidate' ) ) {
opcache_invalidate( $real_file, true );
}
if ( ! isset( $result['message'] ) ) {
$message = __( 'Something went wrong.' );
} else {
$message = $result['message'];
unset( $result['message'] );
}
return new WP_Error( 'php_error', $message, $result );
}
}
*/
WordPress、お手軽かと思ったけど意外と面倒かも。。。
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