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PHP Control Structures (Loop)

PHP Control Structures (Loop)
What will be the output of the following PHP code ?
$a = 97;
switch(?$a) {
case "a":
print "hi";
break;
case 97:
print "hello";
break;
default:
print "hi1";
}

hi
hihello
hello
hihellohi1

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
if (print "hi" - 1)
print "hello"

error
no output
hihello
hi

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

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
$i = 0;
while($i = 10) {
print "hi";
}
print "hello";

hello
infinite loop
hihello
error

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

all
some
error
no output

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
for ($x = 0; $x <= 10; print ++$x) {
print ++$x;
}

1234567891011
12345678910
123456789101112
infinite loop

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