Which PHP function is used to replace a string?

Which is not magic method?

What's the output? function luckyA (&$beebar){ $beebar *= 2; return $beebar; } $x= 4; $y = luckyA($x); $x += 5; echo $x . ', ' . $y;

How would you fall back on the default value of 'Unknown', if a request-parameter is missing or empty?

When passing an object to json_encode(), the default behavior can be modified by:

Which does not have a resource for a return type?

Why does the PHP function 'require_once' work slower than 'require'?

Which printing construct/function accepts multiple parameters?

Which is not true regarding XForms?

What is the output?

What is the output?