PHP using anti-apostrophe to execute external commands _php tutorial

Source: Internet
Author: User

PHP executes external commands with anti-apostrophe


For example:

Echo ' WhoAmI ';

Export the database, the folder to be imported must have writable permission, the content after-u-p must be written next to each other

The code is as follows:

Echo ' mysqldump-h localhost-u$dbuser-p$dbpwd--default-character-set=utf8 $DbName >/var/$dumpFileName ';

Other uses of anti-apostrophe

1

2

3

4

5

6

7

8

9

10

#使用反撇号, implied as a command to execute

$result = ' Date ';

echo "

The server timestamp is: $result

";

echo "

";

#使用shell_exec ()

$result 1=shell_exec ("date");

echo "

The server timestamp is: $result 1

";

?>

The output results are as follows:
The server timestamp is: current date: 2009/06/30 Second Enter new date: (Year month day)

http://www.bkjia.com/PHPjc/983322.html www.bkjia.com true http://www.bkjia.com/PHPjc/983322.html techarticle PHP executes external commands with the anti-apostrophe example: Echo ' whoami ';//Export the database, the folder to be imported must have writable permission, the content after-u-p must be written next to the code as follows ...

  • Contact Us

    The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

    If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

    A Free Trial That Lets You Build Big!

    Start building with 50+ products and up to 12 months usage for Elastic Compute Service

    • Sales Support

      1 on 1 presale consultation

    • After-Sales Support

      24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.