Add sniffs for NOW() and CURRENT_TIMESTAMP()

Author: windaishi

php/php-codesniffer-standard/VIISON/Sniffs/Strings/NoNowInMySqlSniff.php

@@ -0,0 +1,43 @@
+<?php
+namespace VIISON\StyleGuide\PHPCS\Standards\VIISON\Sniffs\Strings;
+
+use PHP_CodeSniffer\Files\File;
+use PHP_CodeSniffer\Sniffs\Sniff;
+
+/**
+ * This sniff disallows the usage of the method NOW() and CURRENT_TIMESTAMP() in SQL queries as they have weird
+ * timezone behavior. It suggests using UTC_TIMESTAMP() instead.
+ */
+class NoNowInMySqlSniff implements Sniff
+{
+    /**
+     * @inheritdoc
+     */
+    public function register()
+    {
+        return [
+            T_CONSTANT_ENCAPSED_STRING,
+            T_HEREDOC,
+            T_NOWDOC,
+        ];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function process(File $phpcsFile, $stackPtr)
+    {
+        $token = $phpcsFile->getTokens()[$stackPtr];
+        $content = $token['content'];
+
+        if (stripos($content, 'NOW(') !== false) {
+            $error = 'The usage of the method NOW() in SQL queries is not allowed. Use UTC_TIMESTAMP() instead.';
+            $phpcsFile->addError($error, $stackPtr, 'NoNowInSql');
+        }
+
+        if (stripos($content, 'CURRENT_TIMESTAMP(') !== false) {
+            $error = 'The usage of the method CURRENT_TIMESTAMP() in SQL queries is not allowed. Use UTC_TIMESTAMP() instead.';
+            $phpcsFile->addError($error, $stackPtr, 'NoCurrentTimestampInSql');
+        }
+    }
+}

php/php-codesniffer-standard/VIISON/Sniffs/Strings/NoUtcTimestampWithoutArgumentInMySqlSniff.php

@@ -0,0 +1,37 @@
+<?php
+namespace VIISON\StyleGuide\PHPCS\Standards\VIISON\Sniffs\Strings;
+
+use PHP_CodeSniffer\Files\File;
+use PHP_CodeSniffer\Sniffs\Sniff;
+
+/**
+ * This sniff checks for the usage of 'UTC_TIMESTAMP()' in string literals and suggests passing 3 as an argument.
+ */
+class NoUtcTimestampWithoutArgumentInMySqlSniff implements Sniff
+{
+    /**
+     * @inheritdoc
+     */
+    public function register()
+    {
+        return [
+            T_CONSTANT_ENCAPSED_STRING,
+            T_HEREDOC,
+            T_NOWDOC
+        ];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function process(File $phpcsFile, $stackPtr)
+    {
+        $token = $phpcsFile->getTokens()[$stackPtr];
+        $content = $token['content'];
+
+        if (preg_match('/UTC_TIMESTAMP\(\s*?[012456789]?\s*?\)/', $content)) {
+            $error = 'Always pass 3 as an argument for UTC_TIMESTAMP() to ensure a consistent precision.';
+            $phpcsFile->addError($error, $stackPtr, 'FoundNowFunction');
+        }
+    }
+}