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I have a problem when I share a link of my website, that remains "static". I mean: when I share an article (link www.mysite.net/?guid=VALUE) in social networks, the post text is normal, but when I click in the article picture or title, the link that opens is the "normal" of my website (www.mysite.net). The title and description not change too. Code: <META ITEMPROP="name" CONTENT="text/html; charset=utf-8"> <?php include("login/db_connect_open.php") ; ?> <?php if (isset($_REQUEST["guid"])) { $guid = mysql_real_escape_string($_REQUEST["guid"]); // sanitize the guid $query = "SELECT * FROM news WHERE news_guid='".$guid."'"; $result = mysql_query($query); $row = mysql_fetch_array($result); ?> <div class="twelve columns"> <div class="row"><h3 class="n3"><?php echo $row["news_title"]; ?></h3> </div> </div> <div class="row"><!-- Row interior--> <div class="twelve columns"> <div class="panel"> <p id="data"><?php echo $row["news_date"]; ?>, <?php echo $row["hour"];?> GMT</p> <p><?php echo $row["news_post"]; ?></p> </div></div></div> <?php } else ?> <div class="twelve columns"> <div class="row"><h3 class="n3">Destaques</h3> </div> <div class="row"> <?php { $query = "SELECT * FROM news WHERE destaque='Sim' and publicado='sim' ORDER BY news_id DESC LIMIT 4"; $result = mysql_query($query); while ($row = mysql_fetch_array($result)) { echo "<div class='three columns'>"; echo "<a href='?guid=".$row["news_guid"]."' class='div-link'>"; echo "<div class='desc-new'>"; //imagem echo "<div class='img-block'><img src='".$row['news_image']."' title='".$row["news_title"]."' alt='".$row["news_title"]."'/></div>"; //texto echo "<h4 class='new-title' onmouseover='none'>".$row["news_title"]."</h4>"; echo "<h4 class='new-subtitle' onmouseover='none'>".$row["news_subtitle"]."</h4>"; echo "<aside><p>".$row["news_desc"]."</p><p class='datapeq'>".$row["news_date"].", ".$row["hour"]."</p></aside>"; echo "</div>"; echo "</a>"; echo "</div>"; } } ?> </div></div> <!-- Fim de row interior --> <?php include("login/db_connect_close.php") ; ?>

I come from a .NET world. Now entering these frigid php waters. I found an example that got me a little confused. Of course, I am trying to apply OOP fundamentals to this php code but it doesn't make sense. This is the class i am talking about. <?php namespace app\models; class User extends \yii\base\Object implements \yii\web\IdentityInterface { public $id; public $username; public $password; public $authKey; private static $users = [ '100' => [ 'id' => '100', 'username' => 'admin', 'password' => 'admin', 'authKey' => 'test100key', ], '101' => [ 'id' => '101', 'username' => 'demo', 'password' => 'demo', 'authKey' => 'test101key', ], ]; public static function findIdentity($id) { return isset(self::$users[$id]) ? new static(self::$users[$id]) : null; } public static function findByUsername($username) { foreach (self::$users as $user) { if (strcasecmp($user['username'], $username) === 0) { return new static($user); } } return null; } public function getId() { return $this->id; } public function getAuthKey() { return $this->authKey; } public function validateAuthKey($authKey) { return $this->authKey === $authKey; } public function validatePassword($password) { return $this->password === $password; } } Alright, it's obvious to me that in the method findByIdentity($id) all it's doing is creating a static new instance of User. This is the first thing that caught me off guard. In .net you cannot create an instance of a static class. Now, moving on. in that line return isset(self::$users[$id])? new static(self::$users[$id]) : null; the second thing that intrigues me is the following. Since all you have in that array is a key/value collection.... private static $users = [ '100' => [ 'id' => '100', 'username' => 'admin', 'password' => 'admin', 'authKey' => 'test100key', ], '101' => [ 'id' => '101', 'username' => 'demo', 'password' => 'demo', 'authKey' => 'test101key', ], ]; how does php determine that it has to create an User object? Reflection? Which leads me to the next question.... looking at the class that it inherits from, Object, in the constructor, there's in one parameter which is an array (one of the elements of the array above). public function __construct($config = []) { if (!empty($config)) { Yii::configure($this, $config); } $this->init(); } BUT, this class in its constructor, is calling Yii::configure($this, $config) and in this method, the way I see it, Yii is adding to $this (the Object instance I am assuming, not the User one) the parameters that belong to User. public static function configure($object, $properties) { foreach ($properties as $name => $value) { $object->$name = $value; } return $object; } Seems to me like it's adding parameters dynamically to Object which will be accessed by User via the matching parameters. Makes sense? From my .net standpoint, $this in Object refers to Object instance itself, not to the User instance inheriting from it (like my friend says). I told him that's a violation of basic OOP principles and it's simply impossible. Anyone that could make me understand about this? Thank you.

Hi all, this is what I have at the moment. <?php //phpinfo(); class StaticMethodClass { private function samplePrint() { echo "This is a simple sample print!<br><br>"; } public static function callerFunction() { $this::samplePrint(); } } StaticMethodClass::callerFunction(); ?> Basically, I'd like to call samplePrint from a public static method, is there any way to go about this?

Consider the following code: <?php error_reporting( E_ALL | E_STRICT ); class staticClass { function staticMethod() { //when called statically from the global scope, this throws a fatal error due to $this echo $this->echoMe . "\n"; } } class dynamicClass { public $echoMe; public function __construct( $echoMe ) { $this->echoMe = $echoMe; } public function thisShouldNotWork() { //calling the staticClass method statically does NOT throw a fatal error as expected, the $this reference inside //staticClass is assumed to be a reference to the current instance of dynamicClass instead staticClass::staticMethod(); } } $a = new dynamicClass( "Hello, World!" ); $a->thisShouldNotWork(); /* The above throws a strict warning BUT STILL PRINTS "Hello, World!" Strict Standards: Non-static method staticClass::staticMethod() should not be called statically, assuming $this from incompatible context in test.php on line 22 Hello, World! */ The aptly named function thisShouldNotWork calls a method statically when that method was not defined as static. Even though the function is called statically, $this exists inside that function and can be manipulated and accessed. However, $this inside of staticClass points to a different class. No inheritance is given by the code, but one class is able to access another's variables using $this. PHP "falls back" to the last valid instance of $this since it's a super-global. Only a strict warning level will tell you that something wacky is going on.