有必要跑到这里来记录几条学习笔记，感兴趣的看一下就行了

shang2010

{:2_168:}

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php打印array

1. var_dump($array)

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shang2010

如果浏览器看到空白，请用测试命令

1. php -f filepath

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看看错在哪里

shang2010

执行一条select语句，官方示范代码修订版

1. 
   
2. $mysqli = new mysqli("localhost", "root", "root", "test");
   
3. 
   
4. /* check connection */
   
5. if (mysqli_connect_errno()) {
   
6.     printf("Connect failed: %s\n", mysqli_connect_error());
   
7.     exit();
   
8. }
   
9. 
   
10. $query = "SELECT now()";
    
11. 
    
12. if ($result = $mysqli->query($query)) {
    
13. 
    
14.     /* fetch object array */
    
15.     while ($row = $result->fetch_row()) {
    
16.         printf ("%s \n", $row[0]);
    
17.     }
    
18. 
    
19.     /* free result set */
    
20.     $result->close();
    
21. }
    
22. 
    
23. /* close connection */
    
24. $mysqli->close();
    

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shang2010

query后的result对象

1. 
   
2. mysqli_result implements Traversable  {
   
3. /* Properties */
   
4. int $current_field ;
   
5. int $field_count;
   
6. array $lengths;
   
7. int $num_rows;
   
8. /* Methods */
   
9. bool data_seek ( int $offset )
   
10. mixed fetch_all ([ int $resulttype = MYSQLI_NUM ] )
    
11. mixed fetch_array ([ int $resulttype = MYSQLI_BOTH ] )
    
12. array fetch_assoc ( void )
    
13. object fetch_field_direct ( int $fieldnr )
    
14. object fetch_field ( void )
    
15. array fetch_fields ( void )
    
16. object fetch_object ([ string $class_name [, array $params ]] )
    
17. mixed fetch_row ( void )
    
18. bool field_seek ( int $fieldnr )
    
19. void free ( void )
    
20. }
    
21. 
    

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http://www.php.net/manual/en/class.mysqli-result.php

pitonas

期待下次。

shang2010

html使用uft8编码

1. 
   
2.   <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

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shang2010

http://php.net/manual/en/function.hash.php
nmmm at nmmm dot nu 20-Jul-2011 01:50
I was interested how "long" each hash is, so I did:

1. 
   
2. $data = "hello";
   
3. 
   
4. foreach (hash_algos() as $v) {
   
5.          $r = hash($v, $data, false);
   
6.          printf("%-12s %3d %s\n", $v, strlen($r), $r);
   
7. }
   

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which produce (long hashes are cropped)

md2           32 a9046c73e00331af68917d3804f70655                  
md4           32 866437cb7a794bce2b727acc0362ee27
md5           32 5d41402abc4b2a76b9719d911017c592
sha1          40 aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d
sha256        64 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e730
sha384        96 59e1748777448c69de6b800d7a33bbfb9ff1b463e44354c3553
sha512       128 9b71d224bd62f3785d96d46ad3ea3d73319bfbc2890caadae2d
ripemd128     32 789d569f08ed7055e94b4289a4195012
ripemd160     40 108f07b8382412612c048d07d13f814118445acd
ripemd256     64 cc1d2594aece0a064b7aed75a57283d9490fd5705ed3d66bf9a
ripemd320     80 eb0cf45114c56a8421fbcb33430fa22e0cd607560a88bbe14ce
whirlpool    128 0a25f55d7308eca6b9567a7ed3bd1b46327f0f1ffdc804dd8bb
tiger128,3    32 a78862336f7ffd2c8a3874f89b1b74f2
tiger160,3    40 a78862336f7ffd2c8a3874f89b1b74f2f27bdbca
tiger192,3    48 a78862336f7ffd2c8a3874f89b1b74f2f27bdbca39660254
tiger128,4    32 1c2a939f230ee5e828f5d0eae5947135
tiger160,4    40 1c2a939f230ee5e828f5d0eae5947135741cd0ae
tiger192,4    48 1c2a939f230ee5e828f5d0eae5947135741cd0aefeeb2adc
snefru        64 7c5f22b1a92d9470efea37ec6ed00b2357a4ce3c41aa6e28e3b
gost          64 a7eb5d08ddf2363f1ea0317a803fcef81d33863c8b2f9f6d7d1
adler32        8 062c0215
crc32          8 3d653119
crc32b         8 3610a686
haval128,3    32 85c3e4fac0ba4d85519978fdc3d1d9be
haval160,3    40 0e53b29ad41cea507a343cdd8b62106864f6b3fe
haval192,3    48 bfaf81218bbb8ee51b600f5088c4b8601558ff56e2de1c4f
haval224,3    56 92d0e3354be5d525616f217660e0f860b5d472a9cb99d6766be
haval256,3    64 26718e4fb05595cb8703a672a8ae91eea071cac5e7426173d4c
haval128,4    32 fe10754e0b31d69d4ece9c7a46e044e5
haval160,4    40 b9afd44b015f8afce44e4e02d8b908ed857afbd1
haval192,4    48 ae73833a09e84691d0214f360ee5027396f12599e3618118
haval224,4    56 e1ad67dc7a5901496b15dab92c2715de4b120af2baf661ecd92
haval256,4    64 2d39577df3a6a63168826b2a10f07a65a676f5776a0772e0a87
haval128,5    32 d20e920d5be9d9d34855accb501d1987
haval160,5    40 dac5e2024bfea142e53d1422b90c9ee2c8187cc6
haval192,5    48 bbb99b1e989ec3174019b20792fd92dd67175c2ff6ce5965
haval224,5    56 aa6551d75e33a9c5cd4141e9a068b1fc7b6d847f85c3ab16295
haval256,5    64 348298791817d5088a6de6c1b6364756d404a50bd64e645035f

maochanglu

看到第一帖，我被吓到了。这么简单也要分享。

ulovko

感谢分享 ^_^

hbeimf