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PHP Operators and Expressions

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

error
7
no output
6

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$one = "one";
$two = "two";
print($one$two);

nothing
onetwo
error
one

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_number()
is_num()
if_numeric
is_numeric()

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$color1 = "red";
$color2 = "1";
$color3 = "grey";
echo "$color1" + "$color2" . "$color3";

1grey
red1grey
0
grey

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$i = "";
while ($i = 10) {
print "hi";
}
print "hello";

error
hello
hihello
infinite loop

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$i = 1;
if ($i++ && ($i == 1))
printf("Yesn$i");
else
printf("Non$i");

Yes 2
Yes 1
No 2
No 1

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