Carl Furst wrote:
Hey all,
Question about ternary operators. You can't really use functions INSIDE
ternary operators, right? They can only be tokens and operators?
So
$fabulous = true;
$fabulous ? echo "I am fabulous!\n" : echo "I am a looser!\n";
Would not work?
testing this is quite easy (given your reference to backtick syntax):
$> php -r '$fabulous = true;$fabulous ? echo "I am fabulous!\n" : echo "I am a looser!\n";'
Parse error: parse error, unexpected T_ECHO in Command line code on line 1
And this:
echo $fabulous ? "I am fabulous!\n" : "I am a looser!\n";
would?
$> php -r '$fabulous = true; echo $fabulous ? "I am fabulous!\n" : "I am a looser!\n";'
I am fabulous!
Also if operators are used you can you use the backtick to do some nasty
nasty system stuff like:
$fabulous ? `rm -Rf ~` : `shutdown --now`;
$> php -r '$fabulous = true; echo $fabulous ? `echo TOOL` : `echo tool`;'
TOOL
So would it ever be contrary to allow the ternary operator to do different
functions on different evaluations of the Boolean Expression at the
beginning; like in the first example?
yes and no. echo is not a function, it's a language construct.
you can do stuff like:
$> php -r '
function func1() { echo "TRUE\n"; }
function func2() { echo "FALSE\n"; }
$f = true; $f ? func1(): func2();
'
TRUE
please say your going start using "php -r" to test stuff like this. :-)
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