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 ?php include headerx.php; ??phpecho date(DATE_ATOM).br/;echo DATE_ATOM.br/;? 3.文件读写,之注意权限 ?php$f = fopen(
1.年月日,时分秒
<?php echo 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
<?php echo date(DATE_ATOM)."<br/>"; echo DATE_ATOM."<br>"; ?>
<?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['REMOTE_ADDR']."\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); ?>
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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