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PHP学习笔记

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Release： 2016-06-13 08:54:26
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PHP学习笔记

strpos($str1,$str2[$offset]);str1中搜索str2，返回第一次出现的位置，头是0;

echo `ipconfig`;等效于echo shell_exec('ipconfig');

echo @(3/0);

&&,||，短路优先级最高

echo date("Y年m月d日 H:i:s");

echo date("Y-m-d H:i:s");

echo date("Y/m/d H:i:s",time())

echo date("Y/m/d H:i:s",time()+24*3600)

echo date('w');

date_default_timezone_get();得到当前的默认时区

date_default_timezone_set();设置时区/PRC Asia/Shanghai

echo ini_get('date.timezone'); ini_set('date.timezone','PRC')

wKiom1X4K9rSQqGQAAGVpFw1orQ188.jpg

isset($var)是否设置;empty($var)是否为空;可套在var_dump();内

exit; die('Game Over!');终止执行

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