PHP Practice

Variables

Hello World!
Hello World!
5
10
100
Hello World Again

Strings

The quick brown fox jumped over the lazy dog.
Lowercase: the quick brown fox jumped over the lazy dog.
Uppercase: THE QUICK BROWN FOX JUMPED OVER THE LAZY DOG.
Uppercase first: The quick brown fox jumped over the lazy dog.
Uppercase words: The Quick Brown Fox Jumped Over The Lazy Dog.

Length: 45
Trim: AB C DE
Find: brown fox jumped over the lazy dog.
Replace by string: The super-fast brown fox jumped over the lazy dog.

Repeat: The quick brown fox jumped over the lazy dog.The quick brown fox jumped over the lazy dog.
Make substring: uick brown
Find position: 10
Find character: zy dog.

Numbers

Basic Math: 7

Absolute value: 300
Exponential: 256
Square root: 10
Modulo: 6
Random: 565185830
Random (min, max): 9

+= : 8
++ : 9

2
3
3.14
10.14
1.3333333333333

Round: 3.1
Round: 3.14
Round: 3
Ceiling: 4
Floor: 3

Is 3 integer? 1
Is 3.14 integer?

Is 3 integer?
Is 3.14 integer? 1

Is 3 integer? 1
Is 3.14 integer? 1

Arrays

8dog

Array
(
    [0] => 6
    [1] => fox
    [2] => dog
    [3] => Array
        (
            [0] => X
            [1] => Y
            [2] => Z
        )

)

Y

Array
(
    [0] => 6
    [1] => fox
    [2] => cat
    [3] => Array
        (
            [0] => X
            [1] => Y
            [2] => Z
        )

    [4] => mouse
)

Associative Arrays

Kevin
Larry

Array Functions

Count: 6
Max value: 42
Min value: 4

Sort: Array
(
    [0] => 4
    [1] => 8
    [2] => 15
    [3] => 16
    [4] => 23
    [5] => 42
)

Reverse Sort: Array
(
    [0] => 42
    [1] => 23
    [2] => 16
    [3] => 15
    [4] => 8
    [5] => 4
)

Implode: 42 * 23 * 16 * 15 * 8 * 4
Explode:

Array
(
    [0] => 42
    [1] => 23
    [2] => 16
    [3] => 15
    [4] => 8
    [5] => 4
)

15 in array?: 1
19 in array?:

Type Casting/Juggling

String1: string
String2: integer

Constants

980