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PHP Control Structures (Loop)

PHP Control Structures (Loop)
What will be the output of the following PHP code ?
$a = 10;
$b = 11;
if ($a < ++$a || $b < ++$b)
print "hello";
else
print "hi";

no output
hello
hi
error

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
if (!print "hi")
if (print "hello")
print "hi";

hi
no output
hihellohi
hihi

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
for ($count = 0; $count < 3;$count++); {
print "hi";
continue;
print "hello";
}

hellohellohello
hihellohihellohihello
hi
hihihi

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
$a = "hello";
if (strlen($a))
print strlen($a);
else
print "hi";

error
hellolength
5
hi

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
$x = 1;
if ($x = $x& 0)
print $x;
else
break;

no output
error
1
0

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
for ($x =1; $x < 10;++$x) {
print "*t";
}

*********
infinite loop
**********
***********

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