Which function can be used to determine if a file exists? (choose all that apply)

Type of PHP error severity?

How you can send Multiple email recipients all go into the address field, with commas separating?

When connecting to a MySQL database server, what are the main API options?

Short explanations of the configuration directives?

What's the output? function callFun( &$arg ) { $return = $arg; $arg += 1; return $return; } $a = 3; $b = callFun( $a ); $c = callFun($a); echo $a; echo ' \n '; echo $b; echo ' \n '; echo $c;

If you would like to check to see if a PHP variable has data, which language constructs would you use?

Which best describes: $panther = new Animal();

Which is an example of a statement using a combined operator?

Which statement correctly declares a float variable in PHP?

Which function allows you to split a string into an array of substrings by a string delimiter?