2017-03-22、php基础语法

(1)时间戳

date_default_timezone_set("Asia/Shanghai"); //时区

$time = date('Y-m-d H:i:s'); echo strtotime($time);//转时间戳

$date = date('Y-m-d H:i:s', strtotime($time));//时间格式

(2)数组转字符串&&字符串转数组

$arr = "[1,2,6,4,6,7,9,11,12,14,15,16]";
$abc = json_decode($arr, true);//json转数组
$ids = implode(",", $abc);//数组转字符串

$array = array('test', '测试', 'test1', 'test2');
echo "'" . implode("','", $array) . "'";

(3)截取字符串

$str_bh='123456789';
$abc=substr($str_bh,-8);

(4)序列化&&反序列化

$spec_arr = unserialize('');

(5)字符串去所有空格

str = "a b c d ";
$qian = array(" ", " ", "\t", "\n", "\r");
$hou = array("", "", "", "", "");
$array = explode(",", str_replace($qian, $hou, $str));
echo '"' . implode('","', $array) . '"';

(6)数组&&多维

unset($classify_arr['classify'][$k]);//移除数组中一条记录

if (in_array('手机类型', $v)) {//检查数组中存在某个值
    echo 'cunzai';
}

 

posted @ 2017-07-11 19:56  ChouCat  阅读(116)  评论(0编辑  收藏  举报