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Basic PHP

Basic PHP
Which of the following is not valid PHP code?

${“MyVar”}
$_10
$10_somethings
&$something
$aVaR

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Basic PHP
Which of the below statements is equivalent to $add += $add ?

$add = $add +$add
$add = $add
$add = $add + $add + 1
$add = $add + 1

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Basic PHP
What is the value of $a and $b after the function call?
function doSomething( &$arg ) {
$return = $arg;
$arg += 1;
return $return;
}
$a = 3;
$b = doSomething( $a );

a is 3 and b is 4
Both are 4
Both are 3
a is 4 and b is 3

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Basic PHP
PHP does not support numbers written in hexadecimal, octal or scientific notation.

True
False

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Basic PHP
If $a = 12 what will be returned when ($a == 12) ? 5 : 1 is executed?

5
12
1
Error

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Basic PHP
You can test the type of any variable with the ..... function.

settype()
gettype()
whattype()
showtype()

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