Undefined PHP property in class [duplicate]

Question

For the sake of the thread I have only 2 PHP classes, one for the Database and one for Users in my database.

When running the executing the code in my Users class a PHP notice is displayed on my browser stating..

Notice: Undefined property: Database::$escape in /my/directory/user.class.php on line x

In my Users class I have the following code:

$Database = new Database(); $submitData = array_map($Database->escape, $submitData); $result = $Database->query("SELECT user_id FROM users WHERE email_address = " . $Database->quote($formData['email_address']));

In my Database class I have the following:

class Database { private $db = array(); private $connection; public $result; public function escape($data) { return mysqli_real_escape_string($this->connection, $data); } ...

use __set() and __get() magic methods to avoid this error !! — Abhik Chakraborty
– Abhik Chakraborty, Commented Feb 25, 2014 at 18:31
ah escape() is a method and u r trying to access as member variable — Abhik Chakraborty
– Abhik Chakraborty, Commented Feb 25, 2014 at 18:32

ziollek · Accepted Answer · 2014-02-25 18:33:07Z

1

Inproper callback, correct callback:

$submitData = array_map(array($Database, "escape"), $submitData);

answered Feb 25, 2014 at 18:33

ziollek

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Comments

Sirac · Accepted Answer · 2014-02-25 18:35:00Z

Try to give your Database instance another name, i think, when you want to use

$Database->escape

, php refers to

Database::$escape

, which is a static variable of the class Database, and such is not defined.

Emi · Accepted Answer · 2014-02-25 18:43:42Z

In your code you have array_map of $Database-> escape which searches for that property and throws the error. You should have a callable function's name like "escape" or some other function.

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