Code Duplication    Length = 14-19 lines in 4 locations

src/Phinx/Db/Adapter/MysqlAdapter.php 1 location

@@ 539-555 (lines=17) @@
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    /**
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     * {@inheritdoc}
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     */
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    public function hasIndex($tableName, $columns)
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    {
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        if (is_string($columns)) {
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            $columns = [$columns]; // str to array
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        }
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        $columns = array_map('strtolower', $columns);
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        $indexes = $this->getIndexes($tableName);
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        foreach ($indexes as $index) {
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            if ($columns == $index['columns']) {
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                return true;
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            }
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        }
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        return false;
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    }
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    /**
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     * {@inheritdoc}

src/Phinx/Db/Adapter/PostgresAdapter.php 1 location

@@ 638-651 (lines=14) @@
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    /**
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     * {@inheritdoc}
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     */
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    public function hasIndex($tableName, $columns)
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    {
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        if (is_string($columns)) {
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            $columns = [$columns];
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        }
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        $indexes = $this->getIndexes($tableName);
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        foreach ($indexes as $index) {
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            if (array_diff($index['columns'], $columns) === array_diff($columns, $index['columns'])) {
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                return true;
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            }
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        }
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        return false;
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    }
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    /**
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     * {@inheritdoc}

src/Phinx/Db/Adapter/SqlServerAdapter.php 1 location

@@ 707-725 (lines=19) @@
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    /**
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     * {@inheritdoc}
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     */
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    public function hasIndex($tableName, $columns)
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    {
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        if (is_string($columns)) {
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            $columns = [$columns]; // str to array
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        }
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        $columns = array_map('strtolower', $columns);
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        $indexes = $this->getIndexes($tableName);
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        foreach ($indexes as $index) {
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            $a = array_diff($columns, $index['columns']);
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            if (empty($a)) {
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                return true;
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            }
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        }
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        return false;
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    }
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    /**
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     * {@inheritdoc}

src/Phinx/Db/Adapter/SQLiteAdapter.php 1 location

@@ 677-690 (lines=14) @@
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    /**
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     * {@inheritdoc}
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     */
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    public function hasIndex($tableName, $columns)
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    {
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        $columns = array_map('strtolower', (array)$columns);
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        $indexes = $this->getIndexes($tableName);
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        foreach ($indexes as $index) {
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            $a = array_diff($columns, $index['columns']);
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            if (empty($a)) {
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                return true;
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            }
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        }
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        return false;
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    }
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    /**
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     * {@inheritdoc}