array_diff函数的注意事项

array_diff —计算数组的差集

说明：

arrayarray_diff(array$array1,array$array2[,array$...] )对比返回在array1中但是不在array2及任何其它参数数组中的值。注意键名保留不变。

注意：本函数只检查了多维数组中的一维。如果想比较更深的维度需要另写一个函数，今天的工作就遇到了这样的需求，所以写了一个函数来比较更深的维度。

<?phpheader("Content-type:text/html;charset=utf-8");$json1='{ "filedir":"default", "pages" : [ { "name" : "首页", "blocks":[ { "name":"头部标题栏", "blocktype":"title_bar", "settings":{ "is_show":true, "bg_color":"#1eb7a4", "content_switch":true, "content":"", "bg_url":"", "color":"#fff", "border_bottom_color":"", "border_bottom_width":"0" } }, { "name":"头部广告图", "blocktype":"ad_picture", "settings":{ "is_show":true, "bg_url":"" } }, { "name":"广告", "blocktype":"ad", "settings":{ "is_show":true, "number":5, "show_type":"scroll" } }, { "name":"菜单", "blocktype":"menu", "settings":{ "is_show":true, "bg_color":"#fff", "color":"#1eb7a4" } }, { "name":"个人中心", "blocktype":"personal_center", "settings":{ "is_show":true, "bg_color":"#fff", "color":"#1eb7a4" } }, { "name":"上网按钮", "blocktype":"online_button", "settings":{ "is_show":true, "offline_bg_url":"", "online_bg_url":"" } } ] }, { "name" : "登录页", "blocks":[ { "name":"页面背景", "blocktype":"page_bg", "settings":{ "is_show":true, "bg_url":"", "bg_color":"" } }, { "name":"logo图", "blocktype":"logo", "settings":{ "is_show":true, "bg_url":"" } }, { "name":"登录模块", "blocktype":"login", "settings":{ "is_show":true, "success_url":"" } } ] }, { "name" : "认证过程页", "duration":"5", "blocks":[ { "name":"页面背景", "blocktype":"page_bg", "settings":{ "is_show":false, "bg_url":"" } }, { "name":"登录动画", "blocktype":"login_animate", "settings":{ "is_show":true, "bg_url":"" } } ] }, { "name" : "登录成功页", "blocks":[ { "name":"头部广告图", "blocktype":"ad_picture", "settings":{ "is_show":true, "bg_url":"" } }, { "name":"成功页app", "blocktype":"apps", "settings":{ "is_show":true } }, { "name":"成功页提示信息", "blocktype":"success_tips", "settings":{ "is_show":false, "color":"#fff", "content":"" } } ] }, { "name" : "广告细览页", "blocks":[ { "name":"头部标题栏", "blocktype":"title_bar", "settings":{ "is_show":true, "bg_color":"#1eb7a4", "content_switch":true, "content":"", "bg_url":"", "color":"#fff", "border_bottom_color":"", "border_bottom_width":"0" } } ] } ] }';$json2='{ "filedir":"default", "pages" : [ { "name" : "首页", "blocks":[ { "name":"头部标题栏", "blocktype":"title_bar", "settings":{ "is_show":true, "bg_color":"#1eb7a4", "content_switch":true, "content":"", "bg_url":"", "color":"#fff", "border_bottom_color":"", "border_bottom_width":"0" } }, { "name":"头部广告图", "blocktype":"ad_picture", "settings":{ "is_show":true, "bg_url":"" } }, { "name":"广告", "blocktype":"ad", "settings":{ "is_show":true, "number":5, "show_type":"scroll" } }, { "name":"菜单", "blocktype":"menu", "settings":{ "is_show":true, "bg_color":"#fff", "color":"#1eb7a4" } }, { "name":"个人中心", "blocktype":"personal_center", "settings":{ "is_show":true, "bg_color":"#fff", "color":"#1eb7a4" } }, { "name":"上网按钮", "blocktype":"online_button", "settings":{ "is_show":true, "offline_bg_url":"", "online_bg_url":"" } } ] }, { "name" : "登录页", "blocks":[ { "name":"页面背景", "blocktype":"page_bg", "settings":{ "is_show":true, "bg_url":"", "bg_color":"" } }, { "name":"logo图", "blocktype":"logo", "settings":{ "is_show":true, "bg_url":"" } }, { "name":"登录模块", "blocktype":"login", "settings":{ "is_show":true, "success_url":"" } } ] }, { "name" : "认证过程页", "duration":"5", "blocks":[ { "name":"页面背景", "blocktype":"page_bg", "settings":{ "is_show":false, "bg_url":"" } }, { "name":"登录动画", "blocktype":"login_animate", "settings":{ "is_show":true, "bg_url":"" } } ] }, { "name" : "登录成功页", "blocks":[ { "name":"头部广告图", "blocktype":"ad_picture", "settings":{ "is_show":true, "bg_url":"" } }, { "name":"成功页app", "blocktype":"apps", "settings":{ "is_show":true } }, { "name":"成功页提示信息", "blocktype":"success_tips", "settings":{ "is_show":false, "color":"#fff", "content":"" } } ] }, { "name" : "广告细览页", "blocks":[ { "name":"头部标题栏", "blocktype":"title_bar", "settings":{ "is_show":true, "bg_color":"#1eb7a4", "content_switch":true, "content":"", "bg_url":"", "color":"#fff", "border_bottom_color":"", "border_bottom_width":"0" } } ] } ] }';$array1=json_decode($json1,true);$array2=json_decode($json2,true);functionarray_recursive_diff($array1,$array2) {$result=array();foreach($array1as$key1=>$value1) {if(array_key_exists($key1,$array2)) {if(is_array($value1)) {$diff= array_recursive_diff($value1,$array2[$key1]);if(count($diff)) { //这个位置进行优化：判断!empty($diff)$result[$key1] =$diff;

}

}else{if($value1!=$array2[$key1]) {$result[$key1] =$value1;

}

}

}else{$result[$key1] =$value1;

}

}return$result;

}$result=array_recursive_diff($array1,$array2);echo'<PRe>';var_dump($result);if(empty($result)){echo'完全相同';

}else{echo'完全不相同';

}