< ?php one = 1; two = 2; three = 3; four = 4; echo "one / two + three / four"; ?>
Answer: Option D
Explanation:
Variables should start with a $ symbol, since one, two, three, four don't begin with $ symbol we will get an error.
< ?php $on$e = 1; $tw$o = 2; $thre$e = 3; $fou$r = 4; echo "$on$e / $tw$o + $thre$e / $fou$r" ; ?>
Answer: Option D
Explanation:
You can not use the $ in between the variable name.
< ?php $on_e = 1; $tw_o = 2; $thre_e = 3; $fou_r = 4; echo "$on_e / $tw_o + $thre_e / $fou_r" ; ?>
< ?php $On_e = 1; $tw_o = 2; $thre_e = 3; $fou_r = 4; echo "$on_e / $tw_o + $thre_e / $fou_r"; ?>
Answer: Option A
Explanation:
Since the variable initialised is $On_e and the variable in the echo statement is $on_e the echo statement treats $on_e as 0;
< ?php echo $red ; ?>
Answer: Option B
Explanation:
There will no output returned as the variable $red does not hold any value.
