phpechonull-coalescing-operator

Can I use echo statement immediately after a null coalescing operator?

Is there a way to implement the logic in my snippet?

Auth::check() ?? echo "<h1>Log in please</h1>";

Parse error: syntax error, unexpected token "echo"

Auth::check() checks whether the user is authorized.

This trick with null coalescing operator would make it much easier for me to read the code.

Solution

  • I think you are missing the importance of NULL in this whole thing. the ?? is afterall called the Null coalescing operator

    Examples

    var_dump( true ?? "<h1>Log in please</h1>" ); 
var_dump( false ?? "<h1>Log in please</h1>" );  
var_dump( NULL ?? "<h1>Log in please</h1>" );

    RESULT

    bool(true)      <- operand1

bool(false)     <- operand1

string(22) "<h1>Log in please</h1>"     <- operand2

    So ONLY when operand 1 in actually and specifically NULL will it return operand 2