命令行登录系统，标准输入输出，对文件数据增删改查代码,PHP代码库,德仔网

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【PHP】命令行登录系统，标准输入输出，对文件数据增删改查
作者:ksly / 发布于2014/9/20/ 802

	<?php
	$fp = fopen('user.log', 'a+');
	Menu();
	function Menu(){
	fwrite(STDOUT, "----------欢迎进入登录系统----------\n");
	
	fwrite(STDOUT, "---1.登录系统\n");
	fwrite(STDOUT, "---2.查看用户\n");
	fwrite(STDOUT, "---3.添加用户\n");
	fwrite(STDOUT, "---4.修改密码\n");
	fwrite(STDOUT, "---5.注销用户\n");
	fwrite(STDOUT, "---0.退出系统\n");
	fwrite(STDOUT, "请输入编号：\n");
	
	$stdin=fopen('php://stdin','r');
	$number=trim(fgets($stdin,100));
	fclose($stdin);
	
	switch($number){
	case 1:
	Login();
	break;
	case 2:
	ViewUser();
	break;
	case 3:
	AddUser();
	break;
	case 4:
	ChangePassword();
	break;
	case 5:
	DeleteUser();
	break;
	case 0:
	exit("已退出系统！\n");
	default :
	fwrite(STDOUT, "输入错误，请重新输入！\n");
	Menu();
	break;
	}
	}
	function Login(){
	fwrite(STDOUT, "\n---登录系统---\n");
	fwrite(STDOUT, "请输入用户名：");
	$stdin=fopen('php://stdin','r');
	$username=trim(fgets($stdin,100));
	fclose($stdin);
	
	fwrite(STDOUT, "请输入密码：");
	$stdin=fopen('php://stdin','r');
	$password=trim(fgets($stdin,100));
	fclose($stdin);
	$content="username:".$username." password:".$password;
	
	$fp = fopen('user.log', 'r');
	while (!feof($fp))
	{
	$user=fgets($fp);
	
	if(strpos($user,$content)===0){
	fwrite(STDOUT, "\n登录成功！\n\n");
	$user_look_=true;
	break;
	}else{
	$user_look_=false;
	}
	}
	if($user_look_===false){
	fwrite(STDOUT, "\n登录失败！\n\n");
	}
	fwrite(STDOUT, "---请输入操作\n");
	fwrite(STDOUT, "---1.返回主菜单\n");
	fwrite(STDOUT, "---2.重新登录\n");
	fwrite(STDOUT, "---0.退出系统\n");
	fwrite(STDOUT, "请输入编号：\n");
	
	$stdin=fopen('php://stdin','r');
	$number=trim(fgets($stdin,100));
	fclose($stdin);
	
	switch($number){
	case 1:
	Menu();
	break;
	case 2:
	Login();
	break;
	case 0:
	exit("已退出系统！\n");
	default :
	exit("输入错误，已退出系统！\n");
	break;
	}
	}
	
	function ViewUser(){
	fwrite(STDOUT, "\n---显示用户---\n");
	
	$fp = fopen('user.log', 'r');
	$i=1;
	while (!feof($fp))
	{
	$user=fgets($fp);
	$username=substr($user, strpos($user,'username:'), strpos($user,'password:'));
	if($username){
	fwrite(STDOUT, $i++.'. '.$username."\n");
	}
	}
	fwrite(STDOUT, "\n---请输入操作\n");
	fwrite(STDOUT, "---1.返回主菜单\n");
	fwrite(STDOUT, "---0.退出系统\n");
	fwrite(STDOUT, "请输入编号：\n");
	
	$stdin=fopen('php://stdin','r');
	$number=trim(fgets($stdin,100));
	fclose($stdin);
	switch($number){
	case 1:
	Menu();
	break;
	case 0:
	exit("已退出系统！\n");
	default :
	exit("输入错误，已退出系统！\n");
	break;
	}
	}
	
	function AddUser(){
	fwrite(STDOUT, "\n---添加用户---\n");
	
	fwrite(STDOUT, "\n请输入用户名：");
	$stdin=fopen('php://stdin','r');
	$username=trim(fgets($stdin,100));
	fclose($stdin);
	
	fwrite(STDOUT, "请输入密码：");
	$stdin=fopen('php://stdin','r');
	$password=trim(fgets($stdin,100));
	fclose($stdin);
	$content="username:".$username." password:".$password;
	
	$fp = fopen('user.log', 'r');
	while (!feof($fp))
	{
	$user=fgets($fp);
	
	if(strpos($user,$content)===0){
	fwrite(STDOUT, "\n用户已存在！\n\n");
	$user_look_=true;
	break;
	}else{
	$user_look_=false;
	}
	}
	if($user_look_===false){
	file_put_contents('user.log', $content . "\r\n", FILE_APPEND);
	fwrite(STDOUT, "\n用户添加成功！\n\n");
	}
	fwrite(STDOUT, "---请输入操作\n");
	fwrite(STDOUT, "---1.返回主菜单\n");
	fwrite(STDOUT, "---2.添加用户\n");
	fwrite(STDOUT, "---0.退出系统\n");
	fwrite(STDOUT, "请输入编号：\n");
	
	$stdin=fopen('php://stdin','r');
	$number=trim(fgets($stdin,100));
	fclose($stdin);
	
	switch($number){
	case 1:
	Menu();
	break;
	case 2:
	AddUser();
	break;
	case 0:
	exit("已退出系统！\n");
	default :
	exit("输入错误，已退出系统！\n");
	}
	}
	
	function ChangePassword(){
	fwrite(STDOUT, "\n---修改密码---\n");
	
	fwrite(STDOUT, "\n请输入用户名：");
	$stdin=fopen('php://stdin','r');
	$username=trim(fgets($stdin,100));
	fclose($stdin);
	
	fwrite(STDOUT, "请输入原密码：");
	$stdin=fopen('php://stdin','r');
	$password=trim(fgets($stdin,100));
	fclose($stdin);
	
	$content="username:".$username." password:".$password;
	
	$user=file_get_contents('user.log');
	if($user)
	{
	if(strpos($user,$content)!==false){
	fwrite(STDOUT, "请输入新密码：");
	$stdin=fopen('php://stdin','r');
	$password1=" password:".trim(fgets($stdin,100));
	fclose($stdin);
	
	$content=substr_replace($user,$password1,strpos($user,"username:".$username)+strlen("username:".$username),strlen(" password:".$password));
	file_put_contents('user.log', $content);
	$user_look_=true;
	}else{
	$user_look_=false;
	}
	}else{
	$user_look_=false;
	}
	if($user_look_===false){
	fwrite(STDOUT, "\n该用户不存在！\n\n");
	}
	fwrite(STDOUT, "\n---请输入操作\n");
	fwrite(STDOUT, "---1.返回主菜单\n");
	fwrite(STDOUT, "---2.修改密码\n");
	fwrite(STDOUT, "---0.退出系统\n");
	fwrite(STDOUT, "请输入编号：\n");
	
	$stdin=fopen('php://stdin','r');
	$number=trim(fgets($stdin,100));
	fclose($stdin);
	
	switch($number){
	case 1:
	Menu();
	break;
	case 1:
	ChangePassword();
	break;
	case 0:
	exit("已退出系统！\n");
	default :
	exit("输入错误，已退出系统！\n");
	break;
	}
	}
	
	function DeleteUser(){
	fwrite(STDOUT, "\n---删除用户---\n");
	
	fwrite(STDOUT, "\n请输入用户名：");
	$stdin=fopen('php://stdin','r');
	$username=trim(fgets($stdin,100));
	fclose($stdin);
	
	$content="username:".$username;
	
	$user=file_get_contents('user.log');
	if($user)
	{
	if(strpos($user,$content)!==false){
	$str_1=substr($user, $start = 0, strpos($user,"username:".$username));
	$str_2=substr($user, strpos($user,"username:".$username)+strlen("username:".$username));
	if(strpos($str_2,"username:")){
	$str_3=substr($str_2, strpos($str_2,"username:"));
	}else{
	$str_3='';
	}
	$content=$str_1.$str_3;
	file_put_contents('user.log', $content);
	$user_look_=true;
	}else{
	$user_look_=false;
	}
	}else{
	$user_look_=false;
	}
	if($user_look_===false){
	fwrite(STDOUT, "\n用户不存在！\n\n");
	}
	fwrite(STDOUT, "---请输入操作\n");
	fwrite(STDOUT, "---1.返回主菜单\n");
	fwrite(STDOUT, "---2.删除用户\n");
	fwrite(STDOUT, "---0.退出系统\n");
	fwrite(STDOUT, "请输入编号：\n");
	
	$stdin=fopen('php://stdin','r');
	$number=trim(fgets($stdin,100));
	fclose($stdin);
	
	switch($number){
	case 1:
	Menu();
	break;
	case 2:
	DeleteUser();
	break;
	case 0:
	exit("已退出系统！\n");
	default :
	exit("输入错误，已退出系统！\n");
	}
	}
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