FunctionLengthSniff.php

<?php

class CreativeMarket_Sniffs_Functions_FunctionLengthSniff implements PHP_CodeSniffer_Sniff
{
    const MAX_NUM_LINES = 30;

    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array
     */
    public function register()
    {
        return array(T_FUNCTION);

    }


    /**
     * Checks if a function or method is too long
     *
     * @param PHP_CodeSniffer_File $phpcsFile The file being scanned.
     * @param int                  $stackPtr  The position of the current token
     *                                        in the stack passed in $tokens.
     *
     * @return void
     */
    public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
    {
        $tokens = $phpcsFile->getTokens();


        $token = $tokens[$stackPtr];
        if (!isset($token['scope_closer'])) {
            // There's no scope. It's either an interface function definition
            // or an abstract method
            return;
        }
        $startPtr = $token['scope_opener'];
        $startLine = $tokens[$startPtr]['line'];
        $endPtr = $token['scope_closer'];
        $endLine = $tokens[$endPtr]['line'];

        if (($endLine - $startLine) > self::MAX_NUM_LINES) {
            $namePtr = $phpcsFile->findNext(T_STRING, $stackPtr);
            $name = $tokens[$namePtr]['content'];
            $phpcsFile->addError('Function "%s" is too long with %d lines', $stackPtr, 'Found', [$name, $endLine - $startLine]);
        }
    }
}