如何基于先前的回声词回显一个单词

Question

I have a form input and if script receive word tip (see if statement), it echo "do this" This work good

Now I want to echo another word based on previous word "do this" with if statement, but this not work

$at=(stripos($a, 'tip') === 0);
if ($at == true) {echo "do this";}
if (echoword == do this) {echo "do that";}

Answer 1

you cant not rely on "previous echo" just rely on condition like this:

$at=(stripos($a, 'tip') === 0);
if ($at == true) {
echo "do this";
echo "do that";
}

becaus in this case your "previous echo" depends only on that condition

IF - is a basic control structure. http://php.net/manual/en/control-structures.elseif.php