phpcs /var/www/test/xml

FILE: /var/www/test/xml/index.php
——————————————————————————–
FOUND 2 ERROR(S) AFFECTING 2 LINE(S)
——————————————————————————–
1 | ERROR | End of line character is invalid; expected “n” but found “rn”
2 | ERROR | Missing file doc comment
——————————————————————————–
FILE: /var/www/test/xml/xml.php
——————————————————————————–
FOUND 8 ERROR(S) AND 1 WARNING(S) AFFECTING 8 LINE(S)
——————————————————————————–
1 | ERROR | End of line character is invalid; expected “n” but found
| | “rn”
2 | ERROR | Missing file doc comment
13 | ERROR | Expected “foreach (…) {n”; found “foreach(…)n{n”
15 | ERROR | Line indented incorrectly; expected at least 4 spaces, found 3
16 | ERROR | Line indented incorrectly; expected at least 4 spaces, found 3
18 | ERROR | Line indented incorrectly; expected 4 spaces, found 3
19 | ERROR | Line indented incorrectly; expected at least 8 spaces, found 4
19 | WARNING | Line exceeds 85 characters; contains 92 characters
21 | ERROR | Line indented incorrectly; expected at least 4 spaces, found 3
——————————————————————————–

phpcs test.php

FILE: /var/www/test/test.php
——————————————————————————–
FOUND 2 ERROR(S) AFFECTING 2 LINE(S)
——————————————————————————–
1 | ERROR | End of line character is invalid; expected “n” but found “rn”
2 | ERROR | Missing file doc comment
——————————————————————————–

Run the below given command

sudo apt-get install php-pear

PHP_CodeSniffer is a PHP5 script that tokenises and “sniffs” PHP, JavaScript and CSS files to detect violations of a defined coding standard. It is an essential development tool that ensures your code remains clean and consistent. It can also help prevent some common semantic errors made by developers.

A coding standard in PHP_CodeSniffer is a collection of sniff files. Each sniff file checks one part of the coding standard only. Multiple coding standards can be used within PHP_CodeSniffer so that the one installation can be used across multiple projects. The default coding standard used by PHP_CodeSniffer is the PEAR coding standard.

PHP_CodeSniffer requires PHP version 5.1.2 or greater.

it can also be used to define a set of Coding Standards  for your project.