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run code in 150+ php & hhvm versions
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<?php $con = mysqli_connect("localhost","root","",'oefening');// Check connectionif (mysqli_connect_errno()) {  echo "Failed to connect to MySQL: " . mysqli_connect_error();  exit();if(mysqli_query($con,"INSERT INTO persons (voornaam , achternaam , leeftijd)            VALUES ('Peter', 'Griffin','35')")){    echo "De query is gelukt!";    } else {    echo "Please check your query and try again. The error is:" .mysqli_error($con);    }mysqli_close($con);?>
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Call to undefined function mysqli_connect() in /in/ARADp:1 Stack trace: #0 {main} thrown in /in/ARADp on line 1
Process exited with code 255.
Output for 5.0.0 - 5.6.28
Fatal error: Call to undefined function mysqli_connect() in /in/ARADp on line 1
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: mysqli_connect() in /in/ARADp on line 1
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: mysqli_connect() in /in/ARADp on line 1
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: mysqli_connect() in /in/ARADp on line 1