What will be the output of the following PHP code ?
<?php $color1 = red;
$color2 = green;
echo $color1 + $color2;
?>
$color2 = green;
echo $color1 + $color2;
?>
redgreen
red green
0
error
Correct Answer :
C. 0
+ operator does not join both the strings.
Related Questions
What is the default time(in seconds) for which session data is considered valid?
1800
3600
1440
1540
What will be the output of the following PHP code ?
<?php $i = 0;
while ($i = 10){ print hi;
}print hello;
?>
while ($i = 10){ print hi;
}print hello;
?>
hello
infinite loop
hihello
error
What will be the output of the following PHP code ?
<?php $i = 2;
while (++$i){ while (--$i > 0) print $i;
} ?>
while (++$i){ while (--$i > 0) print $i;
} ?>
210
10
no output
infinite loop
What will be the output of the following PHP code ?
<?php $i = 2;
while (++$i){ while ($i --> 0) print $i;
} ?>
while (++$i){ while ($i --> 0) print $i;
} ?>
210
10
no output
infinite loop
Which one of the following function is used to start a session?
start_session()
session_start()
session_begin()
begin_session()
If session.use_cookie is set to 0, this results in use of..
Session
Cookie
URL rewriting
Nothing happens
What is the default number of seconds that cached session pages are made available before the new pages are created?
360
180
3600
1800
What will be the output of the following PHP code?
<?php $a1 = array(red, green);
$a2 = array(blue, yellow);
print_r(array_merge($a1, $a2));
?>
$a2 = array(blue, yellow);
print_r(array_merge($a1, $a2));
?>
Array ( [0] => red [1] => green)
Array ( [0] => blue [1] => yellow [2] => red [3] => green )
Array ( [0] => red [1] => green [2] => blue [3] => yellow )
Array ( [0] => blue [1] => yellow )
What will be the output of the following PHP code ?
<?php $color1 = red;
$color2 = 1;
echo $color1 + $color2;
?>
$color2 = 1;
echo $color1 + $color2;
?>
red1
red 1
0
1
What will be the output of the following PHP code ?
<?php $color1 = 1;
$color2 = 1;
echo $color1 + $color2;
?>
$color2 = 1;
echo $color1 + $color2;
?>
11
2
0
1
What will be the output of the following PHP code?
<?php $a = array(a=>red, b=>green, c=>blue);
echo array_shift($a);
print_r ($a);
?>
echo array_shift($a);
print_r ($a);
?>
green
red
redArray( [c] => green [c] => blue )
redArray( [b] => green [c] => blue )
What will be the output of the following PHP code?
<?php $age = array(Peter=>35, Ben=>37, Joe=>43);
print_r(array_change_key_case($age, CASE_UPPER));
?>
print_r(array_change_key_case($age, CASE_UPPER));
?>
Array ( [Peter] => 35 [Ben] => 37 [Joe] => 43 )
Array ( [peter] => 35 [ben] => 37 [joe] => 43 )
Array ( [PETER] => 35 [BEN] => 37 [JOE] => 43 )
Array ( [PeTeR] => 35 [BeN] => 37 [Joe] => 43 )
What will be the output of the following PHP code?
<?php $a1 = array_fill(3, 4, blue);
$b1 = array_fill(0, 1, red);
print_r($a1);
echo
;
print_r($b1);
?>
$b1 = array_fill(0, 1, red);
print_r($a1);
echo
;
print_r($b1);
?>
Array ( [3] => blue [4] => blue)
Array ( [0] => red )
Array ( [4] => blue [5] => blue [6] => blue)
Array ( [0] => red )
Array ( [3] => blue [4] => blue [5] => blue [6] => blue )
Array ()
Array ( [3] => blue [4] => blue [5] => blue [6] => blue )
Array ( [0] => red )
What will be the output of the following PHP code ?
<?php define(__LINE__, PHP is a scripting language);
echo __LINE__;
?>
echo __LINE__;
?>
PHP is a scripting language
__LINE__
2
ERROR
A PHP script should start with ___ and end with ___:
< php >
< ? php ?>
<?php ?>
<% %>
PHP files have a default file extension of..
.html
.xml
.php
.ph
.asp
.jsp
If the format is F then which one of the following will be returned?
Complete text representation of month
Day of month, with leading zero
Daylight saving time
Day of month, without zeros
What will be the output of the following PHP code?
<?php $cars = array(Volvo, BMW, Toyota);
echo I like . $cars[0] . , . $cars[1] . and . $cars[2] . .;
?>
echo I like . $cars[0] . , . $cars[1] . and . $cars[2] . .;
?>
I like Volvo BMW and Toyota.
I like Volvo, BMW and Toyota)
I like Volvo, BMW and Toyota.
I like. Volvo.,. BMW. and. Toyota)
What will be the output of the following PHP code ?
<?php $color = red;
echo $color . red ;
?>
echo $color . red ;
?>
red red
red
error
nothing
Which function displays the web pages most recent modification date?
lastmod()
getlastmod()
last_mod()
get_last_mod()
What will be the output of the following code?
<?php
$foo = 'Bob';
$bar = &$foo;
$bar = "My name is $bar";
echo $bar;
echo $foo;
?>
Error
My name is BobBob
My name is BobMy name is Bob
My name is Bob Bob
If the directive session.cookie_lifetime is set to 3600, the cookie will live until..
3600 sec
3600 min
3600 hrs
the browser is restarted
What will be the output of the following PHP code?
<?php $a1 = array(a=>red, b=>green, c=>blue, d=>yellow);
$a2 = array(e=>red, f=>green, g=>blue);
$result = array_diff($a1, $a2);
print_r($result);
?>
$a2 = array(e=>red, f=>green, g=>blue);
$result = array_diff($a1, $a2);
print_r($result);
?>
Array ( [d] => yellow )
Array ( [c] => blue )
Array ( [a] => red )
Array ( [e] => yellow )
What will be the output of the following PHP code ?
<?php class Constants{ define('MIN_VALUE', '0.0');
define('MAX_VALUE', '1.0');
public static function getMinValue() { return self::MIN_VALUE;
} public static function getMaxValue() { return self::MAX_VALUE;
}}echo Constants::getMinValue();
echo Constants::getMaxValue();
?>
define('MAX_VALUE', '1.0');
public static function getMinValue() { return self::MIN_VALUE;
} public static function getMaxValue() { return self::MAX_VALUE;
}}echo Constants::getMinValue();
echo Constants::getMaxValue();
?>
0.01.0
01
No output
ERROR
The date() function returns ___ representation of the current date and/or time.
Integer
String
Boolean
Float
What will be the output of the following PHP code ?
<?php $color1 = red;
$color2 = green;
echo $color1 . $color2;
?>
$color2 = green;
echo $color1 . $color2;
?>
red
green
red green
redgreen
What will be the output of the following PHP code? If say date is 22/06/2013.
<?php printf( date(t) ) ?>
30
22
JUNE
2013
What will be the output of the following PHP code ?
<?php $color1 = red;
$color2 = green;
echo $color1.$color2;
?>
$color2 = green;
echo $color1.$color2;
?>
red green
red
green
error
What will be the output of the following PHP code ?
<?php $i = 0;
while(++$i || --$i){ print $i;
} ?>
while(++$i || --$i){ print $i;
} ?>
1234567891011121314….infinitely
01234567891011121314…infinitely
1
0
Which of following variables can be assigned a value to it?
i) $3hello
ii) $_hello
iii) $this
iv) $This
All of the mentioned
Only ii)
ii), iii) and iv)
ii) and iv)