运算符、流程控制 

 1 $str = "english is very good!";
 2 
 3 
 4   printf(explode(" ",$str));
 5     // echo $abc[1]
 6 
 7 
 8 // $str = "Hello world. I love Shanghai!";
 9 // print_r (explode(" ",$str));
10 
11     function fun ($m,$n){
12         if ($m==0 || $n==0) {
13             return 0;
14         }else{
15 
16             $a=$m*$n;
17 
18             return $a;
19         }
20     }
21 
22     $p = 5;
23     $q = 6;
24     echo fun($p,$q)."<hr>";
25 
26 
27     //99
28     for ($i=1; $i <= 9 ; $i++) { 
29             if($i==5)break;
30             for ($j=1; $j <= $i ; $j++) { 
31 
32 
33                 echo $j."*".$i."=".$j*$i." ";
34         }
35         echo "<br>";
36     }
37 
38 
39 //地址映射
40  function fun1(&$w){
41 
42      $w=$w*$w;
43 
44  }
45 $x=5;
46 fun1($x);
47 
48 echo $x."<BR>";
49 
50 //
51 
52 function ab($u,$v){
53     define($u, $v);
54 }
55 
56 ab("NA","PHP100");
57 
58 echo NA."<br>";
59 
60 
61 function fun3($a){
62     if($a==1){
63         return 1;
64     }else{
65         return $a*fun3($a-1);
66     }
67 
68 }
69 echo fun3(1);
70 echo "<br/>";
71 echo fun3(2);
72 echo "<br/>";
73 echo fun3(3);
74 echo "<br/>";
75 echo fun3(4);
76 echo "<br/>";

坚持每天200行。

posted @ 2016-06-07 23:52  ht56  阅读(150)  评论(0)    收藏  举报