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<?php final class DbConnection { private $dsn; private $initialized = false; public function __construct($dsn) { $this->dsn = $dsn; } private function init() { $this->initialized = true; // socket stuff happens here, much like with PDO } public function query($queryString) { $this->initialized || $this->init(); // irrelevant from here on return ['query' => $queryString, 'dsn' => $this->dsn]; } } $db_conn = new DbConnection('mysql://something'); var_dump( $db_conn, $db_conn->query('SELECT * FROM foo'), $db_conn->query('SELECT * FROM bar') );
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
object(DbConnection)#1 (2) { ["dsn":"DbConnection":private]=> string(17) "mysql://something" ["initialized":"DbConnection":private]=> bool(true) } array(2) { ["query"]=> string(17) "SELECT * FROM foo" ["dsn"]=> string(17) "mysql://something" } array(2) { ["query"]=> string(17) "SELECT * FROM bar" ["dsn"]=> string(17) "mysql://something" }
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
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