PHP 常用资源
常用资源
常用扩展
好文
优秀的类库
判断是否为空
+--------------+-----------+---------+-----------+---------+--------+
| 真值表        | gettype() | empty() | is_null() | isset() | (bool) |
+--------------+-----------+---------+-----------+---------+--------+
| $x = ""      | string    | true    | false     | true    | false  |
| $x=null      | NULL      | true    | true      | false   | false  |
| var $x       | NULL      | true    | true      | false   | false  |
| $x = array() | array     | true    | false     | true    | false  |
| $x = false   | boolean   | true    | false     | true    | false  |
| $x = 15      | integer   | false   | false     | true    | true   |
| $x = 1       | integer   | false   | false     | true    | true   |
| $x = 0       | integer   | true    | false     | true    | false  |
| $x = -1      | integer   | false   | false     | true    | true   |
| $x = '15'    | string    | false   | false     | true    | true   |
| $x = '1'     | string    | false   | false     | true    | true   |
| $x = '0'     | string    | true    | false     | true    | false  |
| $x = '-1'    | string    | false   | false     | true    | true   |
| $x = 'foo'   | string    | false   | false     | true    | true   |
| $x = 'true'  | string    | false   | false     | true    | true   |
| $x = 'false' | string    | false   | false     | true    | true   |
+--------------+-----------+---------+-----------+---------+--------+
常用命令
修改phpunit内存限制
phpunit -d memory_limit=512M
PHPStorm 常用快捷键
- 
    
Quick Command
Command + Shift + A - 
    
Quick File
Command + Shift + O - 
    
Quick Class
Command + O - 
    
Quick Symbol
Command + Option + O