Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Make a string lowercase
<?php strtolower(string $string): string
<?php             throw Exception::typeNotFound($doctrineType);

        }



        $dbType                             = strtolower($dbType);

        $this->doctrineTypeMapping[$dbType] = $doctrineType;



        $doctrineType = Type::getType($doctrineType);
<?php             $this->initializeAllDoctrineTypeMappings();

        }



        $dbType = strtolower($dbType);



        if (! isset($this->doctrineTypeMapping[$dbType])) {

            throw new Exception(
<?php             $this->initializeAllDoctrineTypeMappings();

        }



        $dbType = strtolower($dbType);



        return isset($this->doctrineTypeMapping[$dbType]);

    }
<?php         if (in_array(strtolower(trim($value)), $this->booleanLiterals['false'], true)) {

            return $callback(false);

        }
<?php             return $callback(false);

        }



        if (in_array(strtolower(trim($value)), $this->booleanLiterals['true'], true)) {

            return $callback(true);

        }
<?php     public function convertFromBoolean($item)

    {

        if ($item !== null && in_array(strtolower($item), $this->booleanLiterals['false'], true)) {

            return false;

        }
<?php         $columnSql      = [];



        foreach ($table->getColumns() as $columnName => $column) {

            $columnName                  = strtolower($columnName);

            $columns[$columnName]        = $column;

            $oldColumnNames[$columnName] = $newColumnNames[$columnName] = $column->getQuotedName($this);

        }
<?php                 continue;

            }



            $columnName = strtolower($columnName);

            if (! isset($columns[$columnName])) {

                continue;

            }
<?php                 continue;

            }



            $columns[strtolower($columnName)] = $column;

        }



        $sql      = [];
<?php     private function replaceColumn($tableName, array $columns, $columnName, Column $column): array

    {

        $keys  = array_keys($columns);

        $index = array_search(strtolower($columnName), $keys, true);



        if ($index === false) {

            throw SchemaException::columnDoesNotExist($columnName, $tableName);
<?php         $values = array_values($columns);



        $keys[$index]   = strtolower($column->getName());

        $values[$index] = $column;



        return array_combine($keys, $values);
<?php         $columns = [];



        foreach ($fromTable->getColumns() as $columnName => $column) {

            $columns[strtolower($columnName)] = $column->getName();

        }



        foreach ($diff->removedColumns as $columnName => $column) {
<?php         }



        foreach ($diff->removedColumns as $columnName => $column) {

            $columnName = strtolower($columnName);

            if (! isset($columns[$columnName])) {

                continue;

            }
<?php         foreach ($diff->renamedColumns as $oldColumnName => $column) {

            $columnName                          = $column->getName();

            $columns[strtolower($oldColumnName)] = $columnName;

            $columns[strtolower($columnName)]    = $columnName;

        }
<?php         foreach ($diff->renamedColumns as $oldColumnName => $column) {

            $columnName                          = $column->getName();

            $columns[strtolower($oldColumnName)] = $columnName;

            $columns[strtolower($columnName)]    = $columnName;

        }



        foreach ($diff->changedColumns as $oldColumnName => $columnDiff) {