这句if正确得怎么写？

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------解决方案--------------------

if ($_GET['lx'] == "1"): 

$file_name = $r['titlepic'];

else:

$file_name = $r['picurl'];

endif;

------解决方案--------------------

if..endif syntax

The `alternative' way to write if/elseif/else statements, using if(); elseif(); else; endif; cannot be efficiently implemented without adding a large amount of complexity to the 3.0 parser. Because of this, the syntax has been changed: Example E-5. Migration: old if..endif syntax



if ($foo);

    echo "yep\n";

elseif ($bar);

    echo "almost\n";

else;

    echo "nope\n";

endif;  

 

Example E-6. Migration: new if..endif syntax



if ($foo):

    echo "yep\n";

elseif ($bar):

    echo "almost\n";

else:

    echo "nope\n";

endif;  

 

Notice that the semicolons have been replaced by colons in all statements but the one terminating the expression (endif).