FilesExpand file tree

 master

/

scope.php

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

66 lines (47 loc) · 1.11 KB

 master

/

scope.php

Copy path

Top

File metadata and controls

• Code
• Blame

66 lines (47 loc) · 1.11 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

<?php

function pp($content) {

echo "<div>$content</div>";

}

function ppp($c) {

print_r($c);

echo "<br><br>==================<br><br>";

}

// 在函数外定义的变量，成为 global 作用域

$server_name = "apache";

function xxx () {

$server_name = 11111;

// echo $server_name;

global $server_name;

$server_name = 3333;

}

$port = 333;

xxx();

//echo "<br>:::::" . $server_name;

// 静态变量

$i = 5;

function yyy() {

@pp($i + 1); // 1: $i 刚出现，是一个局部变量，因为没有定义，所以被当做 0

global $i;

pp($i + 2); // 7: 因为，global 关键词已经把 $i 引用到了外部的 $i

pp($GLOBALS["i"]); // 5

// 静态变量

static $iwillneverdiejishihanshuzhixingwanle = 0;

$iwillneverdiejishihanshuzhixingwanle += 1;

pp("iwillnotdie: " . $iwillneverdiejishihanshuzhixingwanle);

}

pp("000");

yyy();

pp("111");

yyy();

pp("222");

yyy();

pp("333");

yyy();

ppp($_GET);

ppp($_POST);

ppp($_FILES);

ppp($_REQUEST);

ppp($_COOKIE);

ppp($_SESSION);

ppp($_SERVER);

ppp($_ENV);