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PHP Operators and Expressions

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_number()
is_numeric()
if_numeric
is_num()

ANSWER DOWNLOAD EXAMIANS APP

PHP Operators and Expressions
What will be the output of the following PHP code ?
$i = 0;
while ((--$i > ++$i) - 1) {
print $i;
}

no output
error
-1-1-1-1-1-1-1-1-1-1…infinitely
00000000000000000000….infinitely

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$y = 2;
if (--$y <> ($y != $y++)) {
echo $y;
}

0
2
no output
1

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$y = 2;
if (--$y == 2 || $y xor --$y) {
echo $y;
}

no output
1
0
2

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = '12345';
echo 'qwe{$a}rty';

qwe{$a}rty
error
qwe12345rty
no output

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = 0x6db7;
print $a<<6;

1797568
no output
0x6dc0
error

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON PHP Operators and Expressions

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