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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";
}

hihellohi1
hihello
hi
hello

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
$a = array("hi", "hello", "bye");
foreach ($a as $value) {
if (count($a) == 2)
print $value;
}

no output
hihellobye
hihello
infinite loop

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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
0
error
1

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

some
error
all
no output

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

hi
no output
hello
error

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PHP Control Structures (Loop)
What will be the output of the following PHP code ?
$user = array("Ashley", "Bale", "Shrek", "Blank");
for ($x=0; $x < count($user) - 1; $x++) {
if ($user[$x++] == "Shrek")
continue;
printf ($user[$x]);
}

BaleBlank
AshleyShrek
Bale
AshleyBaleBlank

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