Online PHP editor | output for PlZEs

@ 2018-10-29T21:56:53Z

<?php

/* pseudo mysqli object */
class Foo
{
    public $error;
    
    public function __construct($host, $user, $passwd,  $dbname)
    {
        $this->host = $host;
        $this->user = $user;
        $this->pass = $passwd;
        $this->$dbname = $dbname;
    }
    
    public function query($sql, $resultmode)
    {
        if ($sql !== 'Valid Query') {
            $this->error = 'Expected "Valid Query"';
        }
        
        return new Bar;
    }
}

/** pseudo mysql_stmt object */
class Bar
{
    public function fetch_assoc()
    {
        echo 'I was successful';
    }
}



class Conn
{

    private $conn;
   
    public function __construct(...$args) 
    {
        $this->conn = new Foo(...$args);
    }
   
    public function query($query, $resultmode = 1) 
    {
       $d = $this->conn->query($query, $resultmode);
       if (!empty($this->conn->error)) {
           throw new \RuntimeException($this->conn->error);
       }

       return $d;
    }
}

//Your example
$con = 'my_var';
$$con = new Conn('host', 'user', 'pass', 'base');


//example usage of valid query
$q = $my_var->query('Valid Query');
$q->fetch_assoc();

echo PHP_EOL.  '-----' . PHP_EOL;

//example use of invalid query throwing an exception before `fetch_assoc`
$q = $my_var->query('This is not valid');
$q->fetch_assoc();

Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14: Deprecated: Creation of dynamic property Foo::$host is deprecated in /in/PlZEs on line 10 Deprecated: Creation of dynamic property Foo::$user is deprecated in /in/PlZEs on line 11 Deprecated: Creation of dynamic property Foo::$pass is deprecated in /in/PlZEs on line 12 Deprecated: Creation of dynamic property Foo::$base is deprecated in /in/PlZEs on line 13 I was successful ----- Fatal error: Uncaught RuntimeException: Expected "Valid Query" in /in/PlZEs:51 Stack trace: #0 /in/PlZEs(70): Conn->query('This is not val...') #1 {main} thrown in /in/PlZEs on line 51
Process exited with code 255.
Output for 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33: I was successful ----- Fatal error: Uncaught RuntimeException: Expected "Valid Query" in /in/PlZEs:51 Stack trace: #0 /in/PlZEs(70): Conn->query('This is not val...') #1 {main} thrown in /in/PlZEs on line 51
Process exited with code 255.
Output for 5.6.38: I was successful ----- Fatal error: Uncaught exception 'RuntimeException' with message 'Expected "Valid Query"' in /in/PlZEs:51 Stack trace: #0 /in/PlZEs(70): Conn->query('This is not val...') #1 {main} thrown in /in/PlZEs on line 51
Process exited with code 255.

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