Question

我有一堆我最近搜索过的PHP代码，SQL语法也有很多不同之处。我一直在经历它并修复它以符合可读性。

我使用的当前命令是：

sed -i 's/select/SELECT/g;s/from/FROM/g;s/where/WHERE/g;s/limit/LIMIT/g;s/and/AND/g' /master/dashboard.php

然而问题是这些单词中的一些弹出html表单错误消息等，而且我正在节省修复这些错误的时间。我宁愿做得更聪明，也更努力。

假设每个mysql的格式都类似于

mysqli_query($mysqli_con,"select * from contacts where username='$username' and password='$password' and active='1'");

如何让sed的正则表达式搜索首先在其中执行替换的查询部分？

高级冰雹玛丽我会永远爱你的问题：如果我可以让正则表达式使用查询作为替换区域，可以输入/管道来自一个单词列表要包含在`characters？

中的文件

即：我有一个包含联系人，用户名，密码，公司等的文件;和sed - ＆gt; `contacts`，`username`，`password`，`etc`。

示例文件输入剪辑：

session_start();
$username = preg_replace("%[^-_.0-9A-Za-z@]%","",$_SESSION['username']);
$password = preg_replace("%[^-! _.0-9A-Za-z@]%","",$_SESSION['password']);
$date = date("r");
$ip = $REMOTE_ADDR;

$query = mysqli_query($mysqli_con,"select * from contacts where username='$username' and password='$password' and active='1'");
$data = mysqli_fetch_array($query);


if((mysqli_num_rows($query) == "0"))
{
    $_SESSION['message'] = "<font color='red'><b>" . _("Invalid login") . ":</b> " . _("The username and password you entered are not valid.") . "</font>";
    header('Location: /index.php');
}
else
{
$_SESSION['username'] = $data['username'];
$_SESSION['password'] = $data['password'];
$_SESSION['accountid'] = $data['accountid'];
$_SESSION['role'] = $data['role'];

$getCompany = mysqli_query($mysqli_con,"select * from companies where companyid='" . $data['accountid'] . "'");
$dataCompany = mysqli_fetch_array($getCompany);

include('/master/html/header.inc');
?>
<script type="text/javascript">
    $(document).ready(function()
    {
        resizeDashboard();

        $(window).resize(function() {

Answer 1

假设您的查询停留在一行，您可以限制sed只查找这些行：

/mysqli_query/

第一部分sed -i -E '/mysqli_query/s/\b(select|from|where|limit|and)\b/\U\1/g' /master/dashboard.php是address，只有匹配的行会受到substitution command的影响。

您也可以用一个替换所有sed命令：

\U

\1告诉sed使用大写字母直到另行通知为止; sed是搜索括号中捕获的值的backreference。

案例更改为a GNU extension，如果您正在使用BSD sed（例如在macOS上）或其他一些异常DROP DATABASE IF EXISTS DasBus; CREATE DATABASE DasBus; use DasBus; BEGIN; CREATE TABLE Path ( PATH_NUM VARCHAR(10) PRIMARY KEY, START_POINT VARCHAR(10) NOT NULL, END_POINT VARCHAR(10) NOT NULL, INTER DECIMAL(8,2) NOT NULL, TOT_DURATION TIME NOT NULL, PATH_DELAY_NUM VARCHAR(10) NOT NULL, BUS_NUM VARCHAR(10) NOT NULL, PATH_STOP_NUM VARCHAR(10) NOT NULL, SCHED_NUM VARCHAR(10) not null ); CREATE TABLE Path_Delay ( PATH_DELAY_NUM VARCHAR(10) PRIMARY KEY, ISDELAYED BOOLEAN NOT NULL DEFAULT 0, PATH_NUM VARCHAR(10) NOT NULL, DELAY_NUM VARCHAR(10) NOT NULL ); CREATE TABLE Delay ( DELAY_NUM VARCHAR(10) PRIMARY KEY, DELAY_TIME INTEGER NOT NULL DEFAULT 0, DESCRIPTION VARCHAR(100) NOT NULL, PATH_DELAY_NUM VARCHAR(10) NOT NULL ); CREATE TABLE Path_Stop ( PATH_STOP_NUM VARCHAR(10) PRIMARY KEY, PATH_NUM VARCHAR(10) NOT NULL, STOP_NUM VARCHAR(10) NOT NULL, TIMEBETWEEN INTEGER NOT NULL ); CREATE TABLE BusStop ( STOP_NUM VARCHAR(10) PRIMARY KEY, STOP_NAME VARCHAR(100) NOT NULL, ISACTIVE BOOLEAN NOT NULL DEFAULT 1, STOPCONDITION VARCHAR(100) NOT NULL, PATH_STOP_NUM VARCHAR(10) NOT NULL, SCHED_NUM VARCHAR(10) not null ); CREATE TABLE BusSchedule ( SCHED_NUM VARCHAR(10) PRIMARY KEY, INTER TIME NOT NULL, START_TIME TIME NOT NULL, END_TIME TIME NOT NULL, PATH_NUM VARCHAR(10) NOT NULL, STOP_NUM VARCHAR(10) NOT NULL ); CREATE TABLE Bus ( BUS_NUM VARCHAR(10) PRIMARY KEY, BUS_CAPACITY INTEGER(4), DRIVER_NUM VARCHAR(10) NOT NULL, PATH_NUM VARCHAR(10) NOT NULL ); CREATE TABLE Driver ( DRIVER_NUM VARCHAR(10) PRIMARY KEY, DRIVER_LNAME VARCHAR(25) NOT NULL, DRIVER_FNAME VARCHAR(25) NOT NULL, DRIVER_STREET VARCHAR(25) NOT NULL, DRIVER_CITY VARCHAR(25) NOT NULL, DRIVER_ZIP CHAR(6), DRIVER_PHONE VARCHAR(15), BUS_NUM VARCHAR(10) NOT NULL ); ALTER TABLE PATH ADD CONSTRAINT Path1 FOREIGN KEY (BUS_NUM) REFERENCES Bus(BUS_NUM); ALTER TABLE PATH ADD CONSTRAINT Path2 FOREIGN KEY (PATH_DELAY_NUM) REFERENCES Path_Delay (PATH_DELAY_NUM); ALTER TABLE PATH ADD CONSTRAINT Path3 FOREIGN KEY (PATH_STOP_NUM) REFERENCES Path_Stop(PATH_STOP_NUM); ALTER TABLE PATH ADD CONSTRAINT Path4 FOREIGN KEY (SCHED_NUM) REFERENCES BusSchedule(SCHED_NUM); ALTER TABLE Path_Delay ADD CONSTRAINT Path_Delay1 FOREIGN KEY (PATH_NUM) REFERENCES Path(PATH_NUM); ALTER TABLE Path_Delay ADD CONSTRAINT Path_Delay2 FOREIGN KEY (DELAY_NUM) REFERENCES Delay(DELAY_NUM); ALTER TABLE DELAY ADD CONSTRAINT Delay1 FOREIGN KEY (PATH_DELAY_NUM) REFERENCES Path_Delay(PATH_DELAY_NUM); ALTER TABLE BusStop ADD CONSTRAINT BusStop1 FOREIGN KEY (PATH_STOP_NUM) REFERENCES Path_Stop(PATH_STOP_NUM); ALTER TABLE BusStop ADD CONSTRAINT BusStop2 FOREIGN KEY (SCHED_NUM) REFERENCES BusSchedule(SCHED_NUM); ALTER TABLE BUS ADD CONSTRAINT Bus1 FOREIGN KEY (DRIVER_NUM) REFERENCES Driver(DRIVER_NUM); ALTER TABLE BUS ADD CONSTRAINT Bus2 FOREIGN KEY (PATH_NUM) REFERENCES Path(PATH_NUM); ALTER TABLE DRIVER ADD CONSTRAINT Driver1 FOREIGN KEY (BUS_NUM) REFERENCES Bus(BUS_NUM); ALTER TABLE Path_Stop ADD CONSTRAINT Path_Stop1 FOREIGN KEY (PATH_NUM) REFERENCES Path(PATH_NUM); ALTER TABLE Path_Stop ADD CONSTRAINT Path_Stop2 FOREIGN KEY (STOP_NUM) REFERENCES BusStop(STOP_NUM); ALTER TABLE BusSchedule ADD CONSTRAINT BusSchedule1 FOREIGN KEY (STOP_NUM) REFERENCES BusStop (STOP_NUM); ALTER TABLE BusSchedule ADD CONSTRAINT BusSchedule2 FOREIGN KEY (PATH_NUM) REFERENCES Path (PATH_NUM);，则无法使用。

有选择地使用Sed替换SQL语法

1 个答案: