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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 5;
{
$x = 10;
echo "$x";
}
echo "$x";

error
510
1010
105

ANSWER DOWNLOAD EXAMIANS APP

PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 30;
$y = 20;
$z = 10;
echo $x + $y - $z / ($z - $y);

41
-4
51
-5

ANSWER DOWNLOAD EXAMIANS APP

PHP Operators and Expressions
In order to find if a variable holds an actual number or a string containing characters that can be translated into a number you can use:

is_num()
is_number()
is_numeric()
if_numeric

ANSWER DOWNLOAD EXAMIANS APP

PHP Operators and Expressions
What will be the output of the following PHP code ?
$var1 = 1 + ++5;
echo $var1;

error
6
7
no output

ANSWER DOWNLOAD EXAMIANS APP

PHP Operators and Expressions
What will be the output of the following PHP code ?
< ? php < ? php echo "Hello world"; ? > ? >

Hello world
Hello
Nothing
Error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$i = 10;
$j = 0;
if ($i || ($j = $i + 10)) {
echo "true";
}
echo $j;

20
true0
0
true20

ANSWER DOWNLOAD EXAMIANS APP
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