diff --git a/_posts/03-02-01-Programming-Paradigms.md b/_posts/03-02-01-Programming-Paradigms.md
index 6649c625b..5feac6416 100644
--- a/_posts/03-02-01-Programming-Paradigms.md
+++ b/_posts/03-02-01-Programming-Paradigms.md
@@ -51,13 +51,13 @@ PHP carece de `method_missing`, mas ele está disponível com `__call()` e `__ca
 * [Leia sobre Reflexão][reflection]
 * [Leia sobre Overloading][overloading]
 
-[oop]: https://secure.php.net/language.oop5
-[traits]: https://secure.php.net/language.oop5.traits
-[anonymous-functions]: https://secure.php.net/functions.anonymous
-[closure-class]: https://secure.php.net/class.closure
+[oop]: https://www.php.net/language.oop5
+[traits]: https://www.php.net/language.oop5.traits
+[anonymous-functions]: https://www.php.net/functions.anonymous
+[closure-class]: https://www.php.net/class.closure
 [closures-rfc]: https://wiki.php.net/rfc/closures
-[callables]: https://secure.php.net/language.types.callable
-[call-user-func-array]: https://secure.php.net/function.call-user-func-array
-[magic-methods]: https://secure.php.net/language.oop5.magic
-[reflection]: https://secure.php.net/intro.reflection
-[overloading]: https://secure.php.net/language.oop5.overloading
+[callables]: https://www.php.net/language.types.callable
+[call-user-func-array]: https://www.php.net/function.call-user-func-array
+[magic-methods]: https://www.php.net/language.oop5.magic
+[reflection]: https://www.php.net/intro.reflection
+[overloading]: https://www.php.net/language.oop5.overloading
diff --git a/_posts/03-03-01-Namespaces.md b/_posts/03-03-01-Namespaces.md
index b9e2c5150..03cd2893a 100644
--- a/_posts/03-03-01-Namespaces.md
+++ b/_posts/03-03-01-Namespaces.md
@@ -31,6 +31,6 @@ Se você estiver planejando usar um padrão para auto-carregamento para uma nova
 * [Leia sobre a PSR-0][psr0]
 * [Leia sobre a PSR-4][psr4]
 
-[namespaces]: https://secure.php.net/language.namespaces
+[namespaces]: https://www.php.net/language.namespaces
 [psr0]: https://www.php-fig.org/psr/psr-0/
 [psr4]: https://www.php-fig.org/psr/psr-4/
diff --git a/_posts/03-04-01-Standard-PHP-Library.md b/_posts/03-04-01-Standard-PHP-Library.md
index 01423fd24..b130459a2 100644
--- a/_posts/03-04-01-Standard-PHP-Library.md
+++ b/_posts/03-04-01-Standard-PHP-Library.md
@@ -12,7 +12,7 @@ e outras) e iteradores que podem percorrer por essas estruturas de dados ou por
 interfaces SPL.
 
 * [Leia sobre a SPL][spl]
-* [Curso em vídeo sobre SPL no Lynda.com(pago)][spllynda]
+* [Curso em vídeo sobre SPL no LinkedIn.com (pago)][linkedin]
 
 [spl]: https://php.net/book.spl
-[spllynda]: https://www.lynda.com/PHP-tutorials/Up-Running-Standard-PHP-Library/175038-2.html
+[linkedin]: https://www.linkedin.com/learning/learning-the-standard-php-library?trk=lynda_redirect_learning
diff --git a/_posts/03-05-01-Command-Line-Interface.md b/_posts/03-05-01-Command-Line-Interface.md
index 93d495c5e..5775eb415 100644
--- a/_posts/03-05-01-Command-Line-Interface.md
+++ b/_posts/03-05-01-Command-Line-Interface.md
@@ -31,11 +31,11 @@ mostrado a seguir.
 {% highlight php %}
 <?php
 if ($argc !== 2) {
-    echo "Uso: php hello.php <nome>.\n";
+    echo "Uso: php hello.php <nome>" . PHP_EOL;
     exit(1);
 }
 $name = $argv[1];
-echo "Hello, $name\n";
+echo "Hello, $name" . PHP_EOL;
 {% endhighlight %}
 
 O PHP define duas variáveis especiais baseadas nos argumentos que seu script receber. [`$argc`][argc] é uma variável
@@ -57,9 +57,9 @@ Hello, world
 
  * [Aprenda sobre como executar o PHP a partir da linha de comando][php-cli]
 
-[phpinfo]: https://secure.php.net/function.phpinfo
-[cli-options]: https://secure.php.net/features.commandline.options
-[argc]: https://secure.php.net/reserved.variables.argc
-[argv]: https://secure.php.net/reserved.variables.argv
+[phpinfo]: https://www.php.net/function.phpinfo
+[cli-options]: https://www.php.net/features.commandline.options
+[argc]: https://www.php.net/reserved.variables.argc
+[argv]: https://www.php.net/reserved.variables.argv
 [exit-codes]: https://www.gsp.com/cgi-bin/man.cgi?section=3&amp;topic=sysexits
-[php-cli]: https://secure.php.net/features.commandline.options
+[php-cli]: https://www.php.net/manual/en/features.commandline.php
diff --git a/_posts/03-06-01-XDebug.md b/_posts/03-06-01-XDebug.md
index bc311a94f..5a7d4935c 100644
--- a/_posts/03-06-01-XDebug.md
+++ b/_posts/03-06-01-XDebug.md
@@ -35,7 +35,7 @@ e inspecionar os valores na memória.
 
 Depuradores gráficos deixam muito fácil o processo de percorrer o código, inspecionar variáveis e avaliar o código em
 tempo de execução. Várias IDE's possuem incluso ou suportam um plugin para depurar graficamente com o XDebug. MacGDBp é 
-gratuito tem o código fonte aberto uma GUI (Interface Gráfica do Usuário) stand-alone do XDebug para Mac.
+gratuito tem o código fonte aberto uma GUI (Interface Gráfica do Usuário) stand-alone do XDebug para macOS.
 
  * [Aprenda sobre o XDebug][xdebug-docs]
  * [Aprenda sobre o MacGDBp][macgdbp-install]