靓点:
1、多对多交叉场景分配;
2、php新特性-闭包使用、批处理函数array_walk/array_flip使用;
3、位运算&使用案例;
使用场景:
1、常见增删改查(2的N次方值入库);
2、认证、第三方账号绑定、多分类选择;
<?php class s_allow{ //声明使用场景,任务清单 public $scene,$case_list=array(); //声明指定用户角色、允许值、允许清单 public $allow_value=0,$allow_list=array(); //初始化场景、角色 function __construct($scene,$allow_value=0){ $this->scene=$scene; $this->case_list=$this->case_list(true); if ($allow_value) { $this->allow_value=$allow_value; $this->allow_list=$this->allow_list($allow_value,true); } } //取得全部任务清单 function case_list($mode=false){ $case_list=config($this->scene,'allow'); return $mode ? $case_list : array_keys($case_list); } //取得用户任务清单 function allow_list($allow_value=0,$mode=false){ $buffer=array(); foreach ($this->case_list as $key=>$value) { if ($allow_value & pow(2,$key-1)) { $buffer[$key]=$value; } } return $mode ? $buffer : array_keys($buffer); } //计算允许值 function allow_value($allow_list=null){ if ($allow_list==null) $allow_list=$this->allow_list; array_walk($allow_list, function($value,$key) use(&$allow_list){ $allow_list[$key]=pow(2,$value-1); }); return array_sum($allow_list); } //判断是否允许 function is_allow($case){ $case_list=array_flip($this->case_list); return (bool)($this->allow_value & pow(2,$case_list[$case]-1)); } }
[access] 1=add 2=del 3=read 4=list 5=mod 6=detail 7=pub 8=collect 9=like 10=send [cert] 1=email 2=tel 3=qq 4=identity_card 5=real_name 6=business_license [bind] 1=qq 2=weibo 3=taobao 4=alipay 5=renren 6=weichat 7=baidu

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