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PHP Control Structures (Loop)

PHP Control Structures (Loop)
What will be the output of the following PHP code ?
$a = "2";
switch ($a) {
case 1:
print "hi";
case 2:
print "hello";
break;
default:
print "hi1";
}

hello
hi1
hihi1
hihellohi1

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
$i = 0;
while(?++$i || --$i) {
print $i;
}

1
1234567891011121314...infinitely
01234567891011121314...infinitely
0

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
for ($i = 0; -5 ; $i++) {
print"i";
if ($i == 3)
break;
}

0 1 2 3 4 5
0 1 2 3
0 1 2 3 4
error

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
for ($i = 0;$i = -1;$i = 1) {
print $i;
if ($i != 1)
break;
}

infinite loop
0
-1
1

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
$x = 1;
if ($x == 2)
print "hi";
else if($x = 2)
print $x;
else
print "how are u";

hi
2
how are u
error

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
$a = 1;
if ($a--)
print "True";
if ($a++)
print "False";

error
false
no output
true

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