What will be the output of the following PHP code ?<br/>$a1 = array("a" => "red", "b" => "green", "c" => "blue", "d" => "yellow");<br/>$result = array_flip($a1);<br/>print_r($result);

PHP Arrays
What will be the output of the following PHP code ?
$a1 = array("a" => "red", "b" => "green", "c" => "blue", "d" => "yellow");
$result = array_flip($a1);
print_r($result);

Array ( [a] => a [b] => b [c] => c [d] => d )

Array ( [a] => red [b] => green [c] => blue [d] => yellow )

Array ( [red] => red [green] => green [blue] => blue [yellow] => yellow )

Array ( [red] => a [green] => b [blue] => c [yellow] => d )

Array ( [a] => a [b] => b [c] => c [d] => d )

Array ( [a] => red [b] => green [c] => blue [d] => yellow )

Array ( [red] => red [green] => green [blue] => blue [yellow] => yellow )

Array ( [red] => a [green] => b [blue] => c [yellow] => d )

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PHP Arrays
What will be the output of the following PHP code?
$fname = array("Peter", "Ben", "Joe");
$age = array("35", "37", "43");
$c = array_combine($fname, $age);
print_r($c);

Array ( Peter Ben Joe )

Array ( [Peter] => 35 [Ben] => 37 [Joe] => 43 )

Array ( 35 37 43 )

Array ( “[Peter] => 35” “[Ben] => 37” “[Joe] => 43” )

Array ( Peter Ben Joe )

Array ( [Peter] => 35 [Ben] => 37 [Joe] => 43 )

Array ( 35 37 43 )

Array ( “[Peter] => 35” “[Ben] => 37” “[Joe] => 43” )

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PHP Arrays
Array values are keyed by values (called indexed arrays) or using values (called associative arrays). Of course, these key methods can be combined as well.

Even number, string

String, Boolean

Float, string

Integer, string

Positive number, negative number

Even number, string

String, Boolean

Float, string

Integer, string

Positive number, negative number

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PHP Arrays
What will the following script output?
$array = array (1, 2, 3, 5, 8, 13, 21, 34, 55);
$sum = 0;
for ($i = 0; $i < 5; $i++) {
$sum += $array[$array[$i]];
}
echo $sum;

NULL

19

78

5

NULL

19

78

5

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PHP Arrays
What will be the output of the following PHP code?
$a = array("red", "green", "blue");
array_pop($a);
print_r($a);

Array ( [0] => green [1] => blue )

Array ( [0] => red [1] => green )

Array ( [0] => blue [1] => blue )

Array ( [0] => red [1] => blue )

Array ( [0] => green [1] => blue )

Array ( [0] => red [1] => green )

Array ( [0] => blue [1] => blue )

Array ( [0] => red [1] => blue )

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PHP Arrays
Which array function checks if the specified key exists in the array?

arrays_key_exists()

array_key_exists()

array_key_exist()

array_keys_exists()

arrays_key_exists()

array_key_exists()

array_key_exist()

array_keys_exists()

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PHP Arrays

PHP Arrays What will be the output of the following PHP code ?$a1 = array("a" => "red", "b" => "green", "c" => "blue", "d" => "yellow");$result = array_flip($a1);print_r($result);

PHP Arrays What will be the output of the following PHP code?$fname = array("Peter", "Ben", "Joe");$age = array("35", "37", "43");$c = array_combine($fname, $age);print_r($c);

PHP Arrays Array values are keyed by ______ values (called indexed arrays) or using ______ values (called associative arrays). Of course, these key methods can be combined as well.

PHP Arrays What will the following script output?$array = array (1, 2, 3, 5, 8, 13, 21, 34, 55);$sum = 0;for ($i = 0; $i < 5; $i++) {$sum += $array[$array[$i]];}echo $sum;

PHP Arrays What will be the output of the following PHP code?$a = array("red", "green", "blue");array_pop($a);print_r($a);

PHP Arrays Which array function checks if the specified key exists in the array?

PHP Arrays
What will be the output of the following PHP code ?
$a1 = array("a" => "red", "b" => "green", "c" => "blue", "d" => "yellow");
$result = array_flip($a1);
print_r($result);

PHP Arrays
What will be the output of the following PHP code?
$fname = array("Peter", "Ben", "Joe");
$age = array("35", "37", "43");
$c = array_combine($fname, $age);
print_r($c);

PHP Arrays
Array values are keyed by values (called indexed arrays) or using values (called associative arrays). Of course, these key methods can be combined as well.

PHP Arrays
What will the following script output?
$array = array (1, 2, 3, 5, 8, 13, 21, 34, 55);
$sum = 0;
for ($i = 0; $i < 5; $i++) {
$sum += $array[$array[$i]];
}
echo $sum;

PHP Arrays
What will be the output of the following PHP code?
$a = array("red", "green", "blue");
array_pop($a);
print_r($a);

PHP Arrays
Which array function checks if the specified key exists in the array?