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

Fixes #36919.

git-svn-id: https://develop.svn.wordpress.org/trunk@37532 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Dominik Schilling (ocean90) 2016-05-23 14:57:19 +00:00
parent d5373c004c
commit 9f19752175
1 changed files with 29 additions and 25 deletions
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54
src/wp-admin/includes/upgrade.php
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@ -2192,64 +2192,68 @@ function dbDelta( $queries = '', $execute = true ) {
// Extract the field name.
preg_match("|^([^ ]*)|", trim($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;
}
}
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) {
// Add a query to change the column's default value
@ -2259,7 +2263,7 @@ function dbDelta( $queries = '', $execute = true ) {
}
// Remove the field from the array (so it's not added).
unset($cfields[strtolower($tablefield->Field)]);
unset( $cfields[ $tablefield_field_lowercased ] );
} else {
// This field exists in the table, but not in the creation queries?
}