Changeset 37532

Timestamp:

05/23/2016 02:57:19 PM (6 years ago)

Author:

ocean90

Message:

Database: Reduce the number of strtolower() calls in dbDelta().

Fixes #36919.

File:

• trunk/src/wp-admin/includes/upgrade.php (modified) (3 diffs)

trunk/src/wp-admin/includes/upgrade.php

@@ -2193 +2193 @@
             preg_match("|^([^ ]*)|", trim($fld), $fvals);
             $fieldname = trim( $fvals[1], '`' );
+            $fieldname_lowercased = strtolower( $fieldname );
 
             // Verify the found field name.
             $validfield = true;
-            switch (strtolower($fieldname)) {
-            case '':
-            case 'primary':
-            case 'index':
-            case 'fulltext':
-            case 'unique':
-            case 'key':
-                $validfield = false;
-                $indices[] = trim(trim($fld), ", \n");
-                break;
+            switch ( $fieldname_lowercased ) {
+                case '':
+                case 'primary':
+                case 'index':
+                case 'fulltext':
+                case 'unique':
+                case 'key':
+                    $validfield = false;
+                    $indices[] = trim(trim($fld), ", \n");
+                    break;
             }
-            $fld = trim($fld);
+            $fld = trim( $fld );
 
             // If it's a valid field, add it to the field array.
-            if ($validfield) {
-                $cfields[strtolower($fieldname)] = trim($fld, ", \n");
+            if ( $validfield ) {
+                $cfields[ $fieldname_lowercased ] = trim( $fld, ", \n" );
             }
         }
 
         // For every field in the table.
-        foreach ($tablefields as $tablefield) {
+        foreach ( $tablefields as $tablefield ) {
+            $tablefield_field_lowercased = strtolower( $tablefield->Field );
+            $tablefield_type_lowercased = strtolower( $tablefield->Type );
 
             // If the table field exists in the field array ...
-            if (array_key_exists(strtolower($tablefield->Field), $cfields)) {
+            if ( array_key_exists( $tablefield_field_lowercased, $cfields ) ) {
 
                 // Get the field type from the query.
-                preg_match("|".$tablefield->Field." ([^ ]*( unsigned)?)|i", $cfields[strtolower($tablefield->Field)], $matches);
+                preg_match("|".$tablefield->Field." ([^ ]*( unsigned)?)|i", $cfields[ $tablefield_field_lowercased ], $matches);
                 $fieldtype = $matches[1];
+                $fieldtype_lowercased = strtolower( $fieldtype );
 
                 // Is actual field type different from the field type in query?
                 if ($tablefield->Type != $fieldtype) {
                     $do_change = true;
-                    if ( in_array( strtolower( $fieldtype ), $text_fields ) && in_array( strtolower( $tablefield->Type ), $text_fields ) ) {
-                        if ( array_search( strtolower( $fieldtype ), $text_fields ) < array_search( strtolower( $tablefield->Type ), $text_fields ) ) {
+                    if ( in_array( $fieldtype_lowercased, $text_fields ) && in_array( $tablefield_type_lowercased, $text_fields ) ) {
+                        if ( array_search( $fieldtype_lowercased, $text_fields ) < array_search( $tablefield_type_lowercased, $text_fields ) ) {
                             $do_change = false;
                         }
                     }
 
-                    if ( in_array( strtolower( $fieldtype ), $blob_fields ) && in_array( strtolower( $tablefield->Type ), $blob_fields ) ) {
-                        if ( array_search( strtolower( $fieldtype ), $blob_fields ) < array_search( strtolower( $tablefield->Type ), $blob_fields ) ) {
+                    if ( in_array( $fieldtype_lowercased, $blob_fields ) && in_array( $tablefield_type_lowercased, $blob_fields ) ) {
+                        if ( array_search( $fieldtype_lowercased, $blob_fields ) < array_search( $tablefield_type_lowercased, $blob_fields ) ) {
                             $do_change = false;
                         }
@@ -2241 +2245 @@
 
                     if ( $do_change ) {
-                    // Add a query to change the column type
-                        $cqueries[] = "ALTER TABLE {$table} CHANGE COLUMN {$tablefield->Field} " . $cfields[strtolower($tablefield->Field)];
+                        // Add a query to change the column type.
+                        $cqueries[] = "ALTER TABLE {$table} CHANGE COLUMN {$tablefield->Field} " . $cfields[ $tablefield_field_lowercased ];
                         $for_update[$table.'.'.$tablefield->Field] = "Changed type of {$table}.{$tablefield->Field} from {$tablefield->Type} to {$fieldtype}";
                     }
                 }
 
-                // Get the default value from the array
+                // Get the default value from the array.
                     // todo: Remove this?
                     //echo "{$cfields[strtolower($tablefield->Field)]}<br>";
-                if (preg_match("| DEFAULT '(.*?)'|i", $cfields[strtolower($tablefield->Field)], $matches)) {
+                if ( preg_match( "| DEFAULT '(.*?)'|i", $cfields[ $tablefield_field_lowercased ], $matches ) ) {
                     $default_value = $matches[1];
                     if ($tablefield->Default != $default_value) {
@@ -2260 +2264 @@
 
                 // Remove the field from the array (so it's not added).
-                unset($cfields[strtolower($tablefield->Field)]);
+                unset( $cfields[ $tablefield_field_lowercased ] );
             } else {
                 // This field exists in the table, but not in the creation queries?