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PHP完小(2)

WBOY
WBOYOriginal
2016-06-13 12:15:26836browse

PHP小学(2)

1.年月日,时分秒

<?phpecho date(DATE_ATOM)."<br/>";echo DATE_ATOM."<br>";?>

2.include可能产生警告但会继续执行,require可能产生致命错误

<?phpecho date(DATE_ATOM)."<br/>";echo DATE_ATOM."<br>";?>


3.文件读写,之注意权限

<?php $f = fopen("/home/tmp/profile.ini", "a+");echo "error_get_last".print_r(error_get_last());$str = date(DATE_ATOM)." this is time IP".$_SERVER[&#39;REMOTE_ADDR&#39;]."\r\n";fwrite($f, $str, strlen($str));fclose($f);$f = fopen("/home/tmp/grep.man", "r");echo "error_get_last".print_r(error_get_last());while(!feof($f)){<span style="white-space:pre">	echo fgets($f);}fclose($f);?>
可以查看目录权限 ls -l

同时观察当前httpd(apache进程)为何用户在执行: ps -aux | grep  httpd

然后改为响应权限即可:chown

4.

setcookie()必须位于之前,默认是30天,单位是秒


5.

session_start需要在需要使用session的php中都调用

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