php按行数顺序读取TXT里面的内容
txt文件里面每行都保存了一个IP
现在通过不同的电脑请求,每次请求按行数顺序读取.
这个要怎么写?
回复讨论(解决方案)
什么叫通过不同的电脑请求？
没看懂。每次读一行？
什么叫通过不同的电脑请求？
就是有可能 三台或者多台电脑 同时需要读取txt里面的内容,担心不同的电脑读取的ip一样
没看懂。每次读一行？
第一次请求 读取第一行的ip,第二次请求,读取第二行的ip,这样一直下去
按照楼主的意思：
$conts = file_get_contents($filename);$arrConts = explode("\n",$conts);foreach($arrConts as $cont){ $pos = strpos($cont,$_SERVER['REMOTE_ADDR']); if($pos === false) continue; else echo "This ip:".$cont;}
按照楼主的意思：
PHP code
$conts = file_get_contents($filename);
$arrConts = explode("\n",$conts);
foreach($arrConts as $cont){
$pos = strpos($cont,$_SERVER['REMOTE_ADDR']);
if($pos === false)
……
不好意思呀,我是新手,那我那个a.txt文件 放在根目录里,这个代理里面哪个地方放这个文件路径>?
我理解错楼主的意思了，#4更新了任务需求！！！
引用 5 楼 的回复:
按照楼主的意思：
PHP code
$conts = file_get_contents($filename);
$arrConts = explode("\n",$conts);
foreach($arrConts as $cont){
$pos = strpos($cont,$_SERVER['REMOTE_ADDR']);
if($pos =……
$filename = "/root/a.txt";
不过和#4要求有差别，等等其他高手，吃饭先！
引用 6 楼 的回复:
引用 5 楼 的回复:
按照楼主的意思：
PHP code
$conts = file_get_contents($filename);
$arrConts = explode("\n",$conts);
foreach($arrConts as $cont){
$pos = strpos($cont,$_SERVER['REMOTE_ADD……
Warning: file_get_contents(a.txt) [function.file-get-contents]: failed to open stream: No such file or directory in E:\host\bendi\a.com\ip.php on line 9
这个提示是不是我的路径写错了
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>无标题文档</title></head><?php$filename = "/a.txt";$conts = file_get_contents($filename);$arrConts = explode("\n",$conts);foreach($arrConts as $cont){ $pos = strpos($cont,$_SERVER['REMOTE_ADDR']); if($pos === false) continue; else echo "This ip:".$cont;}?><body></body></html>
引用 1 楼 的回复:
什么叫通过不同的电脑请求？
就是有可能 三台或者多台电脑 同时需要读取txt里面的内容,担心不同的电脑读取的ip一样
担心不同的电脑读取的ip一样? 那你是要a 电脑读取1 b电脑读取2 c 电脑读取 3?
上数据库吧.
Warning: file_get_contents(a.txt) [function.file-get-contents]: failed to open stream: No such file or directory in E:\host\bendi\a.com\ip.php on line 9
这种情况出现的问题有两种：
1、路径不对；
Answer-> Linux：$filename="/a.txt";(如楼主说的根目录)
2、文件没有读取权限。
Answer-> Linux: chmod 0777 /a.txt
引用 3 楼 的回复:
引用 1 楼 的回复:
什么叫通过不同的电脑请求？
就是有可能 三台或者多台电脑 同时需要读取txt里面的内容,担心不同的电脑读取的ip一样
担心不同的电脑读取的ip一样? 那你是要a 电脑读取1 b电脑读取2 c 电脑读取 3?
上数据库吧.
是的 是这个意思
$num = 0;if(file_exists('count.txt')) $num = file_get_contents('count.txt');$ar = file('ip.txt');echo $ar[$num++];file_put_contents('count.txt', $num, LOCK_EX);
PHP code
$num = 0;
if(file_exists('count.txt')) $num = file_get_contents('count.txt');
$ar = file('ip.txt');
echo $ar[$num++];
file_put_contents('count.txt', $num, LOCK_EX);
高手这个方法很巧
很明显涉及到并发访问问题，要么用文件锁，要么用数据库事务，否则都无法保证原子性。
$num = 0;if(file_exists('count.txt')) $num = file_get_contents('count.txt');$ar = file('ip.txt');echo $ar[$num++];file_put_contents('count.txt', $num, LOCK_EX);这段代码什么意思呢，是要自己建立一个count.TXT文件来计数，然后才能依行读取IP.TXT的内容吗。
直接输出的就是IP？能不能把IP提取发送啊 新手求教。。http://bbs.csdn.net/topics/390919386?page=1
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