use array in php class construct get Array to string conversion error

Question

Get error Notice: Array to string conversion

what's wrong in this line $this->database['dsn'] = "mysql:host=$this->database['host'];dbname=$this->database['db']";

my code

class databaseClass {

  // data variables
  private $database;


  // Construct
  public function __construct() {

    // database info
    $this->database['host'] = 'localhost';
    $this->database['db'] = 'dbname';
    $this->database['username'] = 'root';
    $this->database['password'] = '123';
    $this->database['dsn'] = "mysql:host=$this->database['host'];dbname=$this->database['db']";


  }

}

Don't Panic · Accepted Answer · 2019-07-26 22:17:19Z

2

You need to use complex syntax (curly braces) for the variable interpolation.

"mysql:host={$this->database['host']};dbname={$this->database['db']}";

See the "Complex (curly) syntax" section in the manual on variable parsing.

Using simple syntax (without the braces) PHP is just trying to insert $this->database into the string, which gives you that notice when it converts the array to a string.

Not directly related to that problem, but I'd suggest passing the connection info as arguments to the constructor. Hard coding them in the function body is a very inflexible way to do it. Try using a different database connection for testing, for example.

edited Jul 26, 2019 at 22:17

answered Jul 26, 2019 at 22:05

Don't Panic

41.9k11 gold badges70 silver badges87 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Silver Preece · Accepted Answer · 2019-07-26 22:00:16Z

0

Your $database variable hasn't been initialised as an array before assigning values to it. Try:

private $database = [];

answered Jul 26, 2019 at 22:00

Silver Preece

1281 silver badge7 bronze badges

1 Comment

Sabry Suleiman Over a year ago

still error Array to string conversion in this line $this->database['dsn'] = "mysql:host=$this->database['host'];dbname=$this->database['db']";

Collectives™ on Stack Overflow

use array in php class construct get Array to string conversion error

2 Answers 2

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related