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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
$color = red;
echo "$color" . red ;

red red
nothing
red
error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
function fun() {
$x = 0;
echo $x;
$x++;
}
fun();
fun();
fun();

123
012
000
111

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PHP Operators and Expressions
In PHP the integer 45 is stored exactly as 45. The floating point number 46.3 could be stored as.

46.2999999
46
none of above
46.3

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = "test";
$y = "this";
$z = "also";
$x .= $y .= $z ;
echo $x;
echo $y;

testthisthisalso
error at line 4
testthis
testthisalsothisalso

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 5;
$y = 10;
function fun() {
$y = $GLOBALS['x'] + $GLOBALS['y'];
}
fun();
echo $y;

10
15
Error
5

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$four4 = 4;
$three3 = 3;
$two2 = 2;
echo $four4 + $three3 / $two2 - 1;

Error
3.5
7
4.5

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