json_encode 函数

json_encode()

PHP的json_encode函数在转化数组的时候有两个规则：

$a = array('a','b','c'); //Non associatvie
$b = array('foo'=>'bar','baz'=>'long'); //associative
echo json_encode($a);  // ["a","b","c"]
echo json_encode($b); // {"foo":"bar","baz":"long"}
echo json_encode($a,JSON_FORCE_OBJECT) // {"1":"a","2":"b","3":"c"}

mysql 常用操作命令

CREATE DATABASE name DEFAULT CHARACTER SET utf8  COLLATE  utf8_general_ci;

GRANT ALL PRIVILEGES ON name.* TO "username"@"%" IDENTIFIED BY '123456';

SHOW CREATE TABEL tablename;