php基础

php输出主机名

<?php
// 获取并输出主机名
$hostname = php_uname('n');
echo "Hostname: $hostname";
?>

获取代码执行时间:

$stime=microtime(true);
中间是代码运行逻辑
$etime=microtime(true);//获取程序执行结束的时间
$total=$etime-$stime; //计算差值 echo "
当前页面执行时间为：{$total} 秒";
可以用于调试性能

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php调用接口 https://blog.xiaohuwei.cn/amp/279.htmlhttps://www.jb51.net/article/72552.htm

$url = "http://www.php100.com/logo.gif";
$ch = curl_init();
curl_setopt ($ch, CURLOPT_URL, $url);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT,10);
$img = curl_exec($ch);

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php 获取今日、昨日、上周、本月的起始时间戳和结束时间戳的方法 https://www.cnblogs.com/rainblack/p/4924581.html

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32位随机字符串

$token=md5(time().mt_rand(0,1000));

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php 获取客户访问接口ip

$ip=get_client_ip();

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判断 PHP 接口当前域名是http还是https

$http_type = ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') || (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) 
&& $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https')) ? 'https://' : 'http://';
halt($http);

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php 获取今日、昨日、上周、本月的起始时间戳和结束时间戳的方法 https://www.cnblogs.com/rainblack/p/4924581.html

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新增id获取

Db::name('user')->insert($data);
$userId = Db::name('user')->getLastInsID();

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fastadmin 页面访问思路: 控制器的if ($this->request->isAjax()) {} 外边代码 ->js->view->控制器if ($this->request->isAjax()) {}里边代码->view