php7下运行， Text_Diff  类无法使用，怎么解决？   提示如下： PHP Deprecated:  Methods with the same name as their class will not be constructors in a future version of PHP; Text_Diff has a deprecated constructor in E:\web\system\Services\Text\Diff.php on line 18 PHP Deprecated:  Methods with the same name as their class will not be constructors in a future version of PHP; Text_MappedDiff has a deprecated constructor in E:\web\system\Services\Text\Diff.php on line 289 PHP Deprecated:  Methods with the same name as their class will not be constructors in a future version of PHP; Text_Diff_Op_copy has a deprecated constructor in E:\web\system\Services\Text\Diff.php on line 367 PHP Deprecated:  Methods with the same name as their class will not be constructors in a future version of PHP; Text_Diff_Op_delete has a deprecated constructor in E:\web\system\Services\Text\Diff.php on line 392 PHP Deprecated:  Methods with the same name as their class will not be constructors in a future version of PHP; Text_Diff_Op_add has a deprecated constructor in E:\web\system\Services\Text\Diff.php on line 414 PHP Deprecated:  Methods with the same name as their class will not be constructors in a future version of PHP; Text_Diff_Op_change has a deprecated constructor in E:\web\system\Services\Text\Diff.php on line 436 PHP Deprecated:  Methods with the same name as their class will not be constructors in a future version of PHP; Text_Diff_Renderer has a deprecated constructor in E:\web\system\Services\Text\Diff\Renderer.php on line 15