#1054 Convert all field from utf8 to utf8mb4: script to print ready SQL queries

scripts/change_collation_sql.php

@@ -0,0 +1,95 @@
+<?php
+/**
+ * Copyright (c) UNA, Inc - https://una.io
+ * MIT License - https://opensource.org/licenses/MIT
+ *
+ * @defgroup    UnaCoreScripts Scripts
+ * @{
+ */
+
+$aPathInfo = pathinfo(__FILE__);
+require_once ($aPathInfo['dirname'] . '/../inc/header.inc.php');
+require_once(BX_DIRECTORY_PATH_INC . 'design.inc.php');
+
+
+/**
+ * Command line interface for generating a list of service functions
+ */
+class BxDolChangeCOllationSqlCmd
+{
+    protected $_sTablesPrefix = '';
+    protected $_aTextTypes = array('char', 'varchar', 'tinytext', 'text', 'mediumtext', 'longtext');
+
+    public function main()
+    {
+        $a = getopt('hp:');
+
+        if (isset($a['h']) || !$a)
+            $this->finish(0, $this->getHelp());
+
+        if (isset($a['p']))
+            $this->_sTablesPrefix = $a['p'];
+
+        if (!$this->_sTablesPrefix)
+            $this->finish(1, 'Tables prefix is mandatory');
+        
+        $this->process();
+    }
+
+    protected function process()
+    {
+        $oDb = BxDolDb::getInstance();
+        $aTables = $oDb->getColumn("SHOW TABLES FROM `" . BX_DATABASE_NAME . "` LIKE ?", [$this->_sTablesPrefix . '%']);
+
+        $s = '';
+        foreach ($aTables as $sTable) {
+            $s .= "-- TABLE: " . $sTable . "\n\n";
+            $s .= "ALTER TABLE `$sTable` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;\n\n";
+
+            $aFields = $oDb->getAll("SHOW COLUMNS FROM `" . $sTable . "`");
+            foreach ($aFields as $r) {
+                if (!$this->isTextField($r['Type']))
+                    continue;
+
+                $s .= "ALTER TABLE `$sTable` CHANGE `{$r['Field']}` `{$r['Field']}` {$r['Type']} CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;\n";
+            }
+
+            $s .= "\n\n";
+        }
+
+        $this->finish(0, $s);
+    }
+
+    protected function isTextField($sType)
+    {
+        foreach ($this->_aTextTypes as $s) {
+            if (0 === strpos($sType, $s))
+                return true;
+        }
+        return false;
+    }
+    
+    protected function getHelp()
+    {
+        $n = 21;
+        $s = "\nUsage: php change_collation_sql.php [options]\n";
+
+        $s .= str_pad("\t -h", $n) . "Print this help\n";
+        $s .= str_pad("\t -p <prefix>", $n) . "Tables prefix to prins SQL queries for\n\n";
+        $s .= "\n";
+
+        return $s;
+    }
+
+    protected function finish ($iCode, $sMsg = null, $bAddLn = true)
+    {
+        if (null !== $sMsg)
+            echo $sMsg . ($bAddLn ? "\n" : '');
+        exit($iCode);
+    }    
+}
+
+$o = new BxDolChangeCOllationSqlCmd();
+$o->main();
+
+/** @} */