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PHP Control Structures (Loop)

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

12345678910
123456789101112
1234567891011
infinite loop

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
$i = "";
while($i) {
print "hi";
}
print "hello";

infinite loop
hihello
error
hello

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

infinite loop
no output
0
error

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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
01234567891011121314...infinitely
1234567891011121314...infinitely
0

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

hi1
hihi1
hihellohi1
hi

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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";

hellolength
5
error
hi

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