Common PHP Errors and How to Fix Them
Browse all documented PHP errors with detailed explanations, root causes, and step-by-step fixes.
The route name 'login' is not defined in the route collection.
This error occurs when a developer tries to use a route name that has not been defined in the framework's route collecti…
SQLSTATE[HY000] [2002] A connection attempt failed because the connected party d
This error occurs when the PHP script tries to establish a connection to the database, but the database server does not …
SQLSTATE[HY000] [2002] Connection timed out: Unable to connect to the database s
This error occurs when the database server is not responding within the specified time limit, usually due to a network i…
SQLSTATE[22007]: Invalid datetime format: 1292 Truncated incorrect datetime valu
This error occurs when the date or time format used in a MySQL query does not match the format specified in the database…
Cannot pass string by reference as a wrapper in /var/www/html/api.php on line 12
This error occurs when attempting to use a string as a reference type, which is not allowed in PHP. It typically happens…
The controller method 'login' does not exist in file '/var/www/html/app/Controll
This error occurs when the framework is unable to find a controller method that matches the requested action. This is of…
Argument 1 passed to Illuminate\Routing\Route::current() must be of the type str
This error occurs when a Laravel application is trying to access the current route, but it expects a string as an argume…
Uncaught Error: Call to a member function prepare() on null in /var/www/html/dat
This error occurs when trying to use an object that has not been initialized or has been set to null, in this case, a PD…
Cannot redeclare class App\Controllers\UserController in /var/www/html/app/Contr
This error occurs when PHP encounters a duplicate definition of a class, interface, function, or constant within the sam…
Error executing query: SQLSTATE[HY000] [2002] Connection refused
This error occurs when the database connection is refused by the server, usually due to the database being down or not r…
Cannot access object property as array in /var/www/html/models/User.php on line
This error occurs when an object is treated as an array, but it does not have the necessary methods to be treated as suc…
Undefined property: stdClass::$name in /var/www/html/user.php on line 34
This error occurs when you try to access a property or method of a non-existent object. In PHP, this often happens when …
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