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PHP Functions

PHP Functions
What will be the output of the following PHP code?
function calc($price, $tax="") {
$total = $price + ($price * $tax);
echo "$total";
}
calc(42);

84
0
42
Error

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PHP Functions
What will be the output of the following PHP code?
echo ord ("hi");

104
106
103
209

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PHP Functions
Which one of the following is the right way of defining a function in PHP?

data type functionName(parameters) { function body }
functionName(parameters) { function body }
function fumctionName(parameters) { function body }
function { function body }

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PHP Functions
The below statement will return.$Var = substr(""abcdef"", -4, 1);

returns "f"
returns "c"
returns "cd"
returns "d"

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PHP Functions
What will be the output of the following PHP code ?
function start($string)
{
if ($string < 45)
return 20;
else
return 40;
}
$t = start(90);
if ($t < 20)
{
echo "Have a good day!";
}
else
{
echo "Have a good night!";}

Have a good day!
None of the mentioned
Have a good night!
ERROR

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PHP Functions
What will be the output of the following PHP code?
function a() {
function b() {
echo 'I am b';
}
echo 'I am a';
}
a();

a();

I am b
Error
I am bI am a
I am a Error

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