Complex classes like Table often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Table, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
            ||
| 40 | class Table  | 
            ||
| 41 | { | 
            ||
| 42 | /**  | 
            ||
| 43 | * @var string  | 
            ||
| 44 | */  | 
            ||
| 45 | protected $name;  | 
            ||
| 46 | |||
| 47 | /**  | 
            ||
| 48 | * @var array  | 
            ||
| 49 | */  | 
            ||
| 50 | protected $options = [];  | 
            ||
| 51 | |||
| 52 | /**  | 
            ||
| 53 | * @var \Phinx\Db\Adapter\AdapterInterface  | 
            ||
| 54 | */  | 
            ||
| 55 | protected $adapter;  | 
            ||
| 56 | |||
| 57 | /**  | 
            ||
| 58 | * @var array  | 
            ||
| 59 | */  | 
            ||
| 60 | protected $columns = [];  | 
            ||
| 61 | |||
| 62 | /**  | 
            ||
| 63 | * @var array  | 
            ||
| 64 | */  | 
            ||
| 65 | protected $indexes = [];  | 
            ||
| 66 | |||
| 67 | /**  | 
            ||
| 68 | * @var \Phinx\Db\Table\ForeignKey[]  | 
            ||
| 69 | */  | 
            ||
| 70 | protected $foreignKeys = [];  | 
            ||
| 71 | |||
| 72 | /**  | 
            ||
| 73 | * @var array  | 
            ||
| 74 | */  | 
            ||
| 75 | protected $data = [];  | 
            ||
| 76 | |||
| 77 | /**  | 
            ||
| 78 | * Class Constuctor.  | 
            ||
| 79 | *  | 
            ||
| 80 | * @param string $name Table Name  | 
            ||
| 81 | * @param array $options Options  | 
            ||
| 82 | * @param \Phinx\Db\Adapter\AdapterInterface $adapter Database Adapter  | 
            ||
| 83 | */  | 
            ||
| 84 | 239 | public function __construct($name, $options = [], AdapterInterface $adapter = null)  | 
            |
| 93 | |||
| 94 | /**  | 
            ||
| 95 | * Sets the table name.  | 
            ||
| 96 | *  | 
            ||
| 97 | * @param string $name Table Name  | 
            ||
| 98 | * @return \Phinx\Db\Table  | 
            ||
| 99 | */  | 
            ||
| 100 | 239 | public function setName($name)  | 
            |
| 101 |     { | 
            ||
| 102 | 239 | $this->name = $name;  | 
            |
| 103 | 239 | ||
| 104 | return $this;  | 
            ||
| 105 | }  | 
            ||
| 106 | |||
| 107 | /**  | 
            ||
| 108 | * Gets the table name.  | 
            ||
| 109 | *  | 
            ||
| 110 | * @return string  | 
            ||
| 111 | 215 | */  | 
            |
| 112 | public function getName()  | 
            ||
| 116 | |||
| 117 | /**  | 
            ||
| 118 | * Sets the table options.  | 
            ||
| 119 | *  | 
            ||
| 120 | * @param array $options  | 
            ||
| 121 | * @return \Phinx\Db\Table  | 
            ||
| 122 | 239 | */  | 
            |
| 123 | public function setOptions($options)  | 
            ||
| 129 | |||
| 130 | /**  | 
            ||
| 131 | * Gets the table options.  | 
            ||
| 132 | *  | 
            ||
| 133 | 189 | * @return array  | 
            |
| 134 | */  | 
            ||
| 135 | 189 | public function getOptions()  | 
            |
| 139 | |||
| 140 | /**  | 
            ||
| 141 | * Sets the database adapter.  | 
            ||
| 142 | *  | 
            ||
| 143 | * @param \Phinx\Db\Adapter\AdapterInterface $adapter Database Adapter  | 
            ||
| 144 | 231 | * @return \Phinx\Db\Table  | 
            |
| 145 | */  | 
            ||
| 146 | 231 | public function setAdapter(AdapterInterface $adapter)  | 
            |
| 152 | |||
| 153 | /**  | 
            ||
| 154 | * Gets the database adapter.  | 
            ||
| 155 | 225 | *  | 
            |
| 156 | * @return \Phinx\Db\Adapter\AdapterInterface  | 
            ||
| 157 | 225 | */  | 
            |
| 158 | public function getAdapter()  | 
            ||
| 162 | |||
| 163 | /**  | 
            ||
| 164 | * Does the table exist?  | 
            ||
| 165 | 195 | *  | 
            |
| 166 | * @return bool  | 
            ||
| 167 | 195 | */  | 
            |
| 168 | public function exists()  | 
            ||
| 172 | |||
| 173 | /**  | 
            ||
| 174 | * Drops the database table.  | 
            ||
| 175 | 1 | *  | 
            |
| 176 | * @return void  | 
            ||
| 177 | 1 | */  | 
            |
| 178 | 1 | public function drop()  | 
            |
| 182 | |||
| 183 | /**  | 
            ||
| 184 | * Renames the database table.  | 
            ||
| 185 | *  | 
            ||
| 186 | 3 | * @param string $newTableName New Table Name  | 
            |
| 187 | * @return \Phinx\Db\Table  | 
            ||
| 188 | 3 | */  | 
            |
| 189 | 3 | public function rename($newTableName)  | 
            |
| 196 | |||
| 197 | /**  | 
            ||
| 198 | * Sets an array of columns waiting to be committed.  | 
            ||
| 199 | * Use setPendingColumns  | 
            ||
| 200 | *  | 
            ||
| 201 | * @deprecated  | 
            ||
| 202 | * @param array $columns Columns  | 
            ||
| 203 | * @return \Phinx\Db\Table  | 
            ||
| 204 | */  | 
            ||
| 205 | public function setColumns($columns)  | 
            ||
| 211 | 10 | ||
| 212 | /**  | 
            ||
| 213 | 10 | * Gets an array of the table columns.  | 
            |
| 214 | *  | 
            ||
| 215 | * @return \Phinx\Db\Table\Column[]  | 
            ||
| 216 | */  | 
            ||
| 217 | public function getColumns()  | 
            ||
| 221 | |||
| 222 | 196 | /**  | 
            |
| 223 | * Sets an array of columns waiting to be committed.  | 
            ||
| 224 | 196 | *  | 
            |
| 225 | 196 | * @param array $columns Columns  | 
            |
| 226 | * @return \Phinx\Db\Table  | 
            ||
| 227 | */  | 
            ||
| 228 | public function setPendingColumns($columns)  | 
            ||
| 234 | |||
| 235 | 204 | /**  | 
            |
| 236 | * Gets an array of columns waiting to be committed.  | 
            ||
| 237 | *  | 
            ||
| 238 | * @return \Phinx\Db\Table\Column[]  | 
            ||
| 239 | */  | 
            ||
| 240 | public function getPendingColumns()  | 
            ||
| 244 | 196 | ||
| 245 | /**  | 
            ||
| 246 | 196 | * Sets an array of columns waiting to be indexed.  | 
            |
| 247 | 196 | *  | 
            |
| 248 | * @param array $indexes Indexes  | 
            ||
| 249 | * @return \Phinx\Db\Table  | 
            ||
| 250 | */  | 
            ||
| 251 | public function setIndexes($indexes)  | 
            ||
| 257 | 191 | ||
| 258 | /**  | 
            ||
| 259 | * Gets an array of indexes waiting to be committed.  | 
            ||
| 260 | *  | 
            ||
| 261 | * @return array  | 
            ||
| 262 | */  | 
            ||
| 263 | public function getIndexes()  | 
            ||
| 267 | |||
| 268 | 196 | /**  | 
            |
| 269 | 196 | * Sets an array of foreign keys waiting to be commited.  | 
            |
| 270 | *  | 
            ||
| 271 | * @param \Phinx\Db\Table\ForeignKey[] $foreignKeys foreign keys  | 
            ||
| 272 | * @return \Phinx\Db\Table  | 
            ||
| 273 | */  | 
            ||
| 274 | public function setForeignKeys($foreignKeys)  | 
            ||
| 280 | |||
| 281 | /**  | 
            ||
| 282 | * Gets an array of foreign keys waiting to be commited.  | 
            ||
| 283 | *  | 
            ||
| 284 | * @return array|\Phinx\Db\Table\ForeignKey[]  | 
            ||
| 285 | */  | 
            ||
| 286 | public function getForeignKeys()  | 
            ||
| 290 | 196 | ||
| 291 | 196 | /**  | 
            |
| 292 | * Sets an array of data to be inserted.  | 
            ||
| 293 | *  | 
            ||
| 294 | * @param array $data Data  | 
            ||
| 295 | * @return \Phinx\Db\Table  | 
            ||
| 296 | */  | 
            ||
| 297 | public function setData($data)  | 
            ||
| 303 | |||
| 304 | /**  | 
            ||
| 305 | * Gets the data waiting to be inserted.  | 
            ||
| 306 | *  | 
            ||
| 307 | * @return array  | 
            ||
| 308 | */  | 
            ||
| 309 | 196 | public function getData()  | 
            |
| 313 | 196 | ||
| 314 | 196 | /**  | 
            |
| 315 | 196 | * Resets all of the pending table changes.  | 
            |
| 316 | *  | 
            ||
| 317 | * @return void  | 
            ||
| 318 | */  | 
            ||
| 319 | public function reset()  | 
            ||
| 326 | |||
| 327 | /**  | 
            ||
| 328 | * Add a table column.  | 
            ||
| 329 | *  | 
            ||
| 330 | * Type can be: string, text, integer, float, decimal, datetime, timestamp,  | 
            ||
| 331 | * time, date, binary, boolean.  | 
            ||
| 332 | 210 | *  | 
            |
| 333 | * Valid options can be: limit, default, null, precision or scale.  | 
            ||
| 334 | *  | 
            ||
| 335 | 210 | * @param string|\Phinx\Db\Table\Column $columnName Column Name  | 
            |
| 336 | 1 | * @param string $type Column Type  | 
            |
| 337 | * @param array $options Column Options  | 
            ||
| 338 | * @throws \RuntimeException  | 
            ||
| 339 | * @throws \InvalidArgumentException  | 
            ||
| 340 | 209 | * @return \Phinx\Db\Table  | 
            |
| 341 | 207 | */  | 
            |
| 342 | 207 | public function addColumn($columnName, $type = null, $options = [])  | 
            |
| 372 | |||
| 373 | /**  | 
            ||
| 374 | * Remove a table column.  | 
            ||
| 375 | *  | 
            ||
| 376 | * @param string $columnName Column Name  | 
            ||
| 377 | * @return \Phinx\Db\Table  | 
            ||
| 378 | */  | 
            ||
| 379 | public function removeColumn($columnName)  | 
            ||
| 385 | |||
| 386 | /**  | 
            ||
| 387 | * Rename a table column.  | 
            ||
| 388 | *  | 
            ||
| 389 | * @param string $oldName Old Column Name  | 
            ||
| 390 | * @param string $newName New Column Name  | 
            ||
| 391 | * @return \Phinx\Db\Table  | 
            ||
| 392 | */  | 
            ||
| 393 | public function renameColumn($oldName, $newName)  | 
            ||
| 399 | 4 | ||
| 400 | 4 | /**  | 
            |
| 401 | 4 | * Change a table column type.  | 
            |
| 402 | 4 | *  | 
            |
| 403 | 13 | * @param string $columnName Column Name  | 
            |
| 404 | * @param string|\Phinx\Db\Table\Column $newColumnType New Column Type  | 
            ||
| 405 | * @param array $options Options  | 
            ||
| 406 | * @return \Phinx\Db\Table  | 
            ||
| 407 | 17 | */  | 
            |
| 408 | 15 | public function changeColumn($columnName, $newColumnType, $options = [])  | 
            |
| 428 | |||
| 429 | /**  | 
            ||
| 430 | * Checks to see if a column exists.  | 
            ||
| 431 | *  | 
            ||
| 432 | * @param string $columnName Column Name  | 
            ||
| 433 | * @return bool  | 
            ||
| 434 | */  | 
            ||
| 435 | 29 | public function hasColumn($columnName)  | 
            |
| 439 | 28 | ||
| 440 | 28 | /**  | 
            |
| 441 | 22 | * Add an index to a database table.  | 
            |
| 442 | 22 | *  | 
            |
| 443 | 28 | * In $options you can specific unique = true/false or name (index name).  | 
            |
| 444 | 28 | *  | 
            |
| 445 | 28 | * @param string|array|\Phinx\Db\Table\Index $columns Table Column(s)  | 
            |
| 446 | 1 | * @param array $options Index Options  | 
            |
| 447 | * @return \Phinx\Db\Table  | 
            ||
| 448 | */  | 
            ||
| 449 | 29 | public function addIndex($columns, $options = [])  | 
            |
| 467 | |||
| 468 | /**  | 
            ||
| 469 | * Removes the given index from a table.  | 
            ||
| 470 | *  | 
            ||
| 471 | 1 | * @param array $columns Columns  | 
            |
| 472 | * @return \Phinx\Db\Table  | 
            ||
| 473 | 1 | */  | 
            |
| 474 | 1 | public function removeIndex($columns)  | 
            |
| 480 | |||
| 481 | /**  | 
            ||
| 482 | * Removes the given index identified by its name from a table.  | 
            ||
| 483 | *  | 
            ||
| 484 | 12 | * @param string $name Index name  | 
            |
| 485 | * @return \Phinx\Db\Table  | 
            ||
| 486 | 12 | */  | 
            |
| 487 | public function removeIndexByName($name)  | 
            ||
| 493 | |||
| 494 | /**  | 
            ||
| 495 | * Checks to see if an index exists.  | 
            ||
| 496 | *  | 
            ||
| 497 | * @param string|array $columns Columns  | 
            ||
| 498 | * @return bool  | 
            ||
| 499 | */  | 
            ||
| 500 | public function hasIndex($columns)  | 
            ||
| 504 | 4 | ||
| 505 | 4 | /**  | 
            |
| 506 | 8 | * Checks to see if an index specified by name exists.  | 
            |
| 507 | 8 | *  | 
            |
| 508 | * @param string $indexName  | 
            ||
| 509 | * @return bool  | 
            ||
| 510 | 8 | */  | 
            |
| 511 | public function hasIndexByName($indexName)  | 
            ||
| 512 | 8 |     { | 
            |
| 513 | 8 | return $this->getAdapter()->hasIndexByName($this->getName(), $indexName);  | 
            |
| 514 | 8 | }  | 
            |
| 515 | 8 | ||
| 516 | /**  | 
            ||
| 517 | 8 | * Add a foreign key to a database table.  | 
            |
| 518 | *  | 
            ||
| 519 | * In $options you can specify on_delete|on_delete = cascade|no_action ..,  | 
            ||
| 520 | * on_update, constraint = constraint name.  | 
            ||
| 521 | *  | 
            ||
| 522 | * @param string|array $columns Columns  | 
            ||
| 523 | * @param string|\Phinx\Db\Table $referencedTable Referenced Table  | 
            ||
| 524 | * @param string|array $referencedColumns Referenced Columns  | 
            ||
| 525 | * @param array $options Options  | 
            ||
| 526 | * @return \Phinx\Db\Table  | 
            ||
| 527 | 1 | */  | 
            |
| 528 | public function addForeignKey($columns, $referencedTable, $referencedColumns = ['id'], $options = [])  | 
            ||
| 546 | |||
| 547 | /**  | 
            ||
| 548 | 1 | * Removes the given foreign key from the table.  | 
            |
| 549 | *  | 
            ||
| 550 | 1 | * @param string|array $columns Column(s)  | 
            |
| 551 | * @param null|string $constraint Constraint names  | 
            ||
| 552 | * @return \Phinx\Db\Table  | 
            ||
| 553 | */  | 
            ||
| 554 | public function dropForeignKey($columns, $constraint = null)  | 
            ||
| 567 | |||
| 568 | 15 | /**  | 
            |
| 569 | 15 | * Checks to see if a foreign key exists.  | 
            |
| 570 | 15 | *  | 
            |
| 571 | * @param string|array $columns Column(s)  | 
            ||
| 572 | 15 | * @param null|string $constraint Constraint names  | 
            |
| 573 | * @return bool  | 
            ||
| 574 | 15 | */  | 
            |
| 575 | public function hasForeignKey($columns, $constraint = null)  | 
            ||
| 579 | |||
| 580 | /**  | 
            ||
| 581 | * Add timestamp columns created_at and updated_at to the table.  | 
            ||
| 582 | *  | 
            ||
| 583 | * @param string $createdAtColumnName  | 
            ||
| 584 | * @param string $updatedAtColumnName  | 
            ||
| 585 | *  | 
            ||
| 586 | * @return \Phinx\Db\Table  | 
            ||
| 587 | */  | 
            ||
| 588 | public function addTimestamps($createdAtColumnName = 'created_at', $updatedAtColumnName = 'updated_at')  | 
            ||
| 603 | |||
| 604 | /**  | 
            ||
| 605 | * Insert data into the table.  | 
            ||
| 606 | *  | 
            ||
| 607 | 196 | * @param array $data array of data in the form:  | 
            |
| 608 | * array(  | 
            ||
| 609 | 196 |      *                  array("col1" => "value1", "col2" => "anotherValue1"), | 
            |
| 610 | 196 |      *                  array("col2" => "value2", "col2" => "anotherValue2"), | 
            |
| 611 | 196 | * )  | 
            |
| 612 | 196 |      *              or array("col1" => "value1", "col2" => "anotherValue1") | 
            |
| 613 | *  | 
            ||
| 614 | * @return \Phinx\Db\Table  | 
            ||
| 615 | */  | 
            ||
| 616 | public function insert($data)  | 
            ||
| 630 | |||
| 631 | 46 | /**  | 
            |
| 632 | 6 | * Creates a table from the object instance.  | 
            |
| 633 | 46 | *  | 
            |
| 634 | * @return void  | 
            ||
| 635 | 46 | */  | 
            |
| 636 | 3 | public function create()  | 
            |
| 642 | |||
| 643 | /**  | 
            ||
| 644 | * Updates a table from the object instance.  | 
            ||
| 645 | *  | 
            ||
| 646 | * @throws \RuntimeException  | 
            ||
| 647 | * @return void  | 
            ||
| 648 | 196 | */  | 
            |
| 649 | public function update()  | 
            ||
| 671 | 1 | ||
| 672 | /**  | 
            ||
| 673 | 12 | * Commit the pending data waiting for insertion.  | 
            |
| 674 | *  | 
            ||
| 675 | * @return void  | 
            ||
| 676 | */  | 
            ||
| 677 | public function saveData()  | 
            ||
| 703 | |||
| 704 | /**  | 
            ||
| 705 | * Truncates the table.  | 
            ||
| 706 | *  | 
            ||
| 707 | * @return void  | 
            ||
| 708 | */  | 
            ||
| 709 | public function truncate()  | 
            ||
| 710 |     { | 
            ||
| 711 | $this->getAdapter()->truncateTable($this->getName());  | 
            ||
| 712 | }  | 
            ||
| 713 | |||
| 714 | /**  | 
            ||
| 715 | * Commits the table changes.  | 
            ||
| 716 | *  | 
            ||
| 717 | * If the table doesn't exist it is created otherwise it is updated.  | 
            ||
| 718 | *  | 
            ||
| 719 | * @return void  | 
            ||
| 720 | */  | 
            ||
| 721 | public function save()  | 
            ||
| 731 | }  | 
            ||
| 732 | 
In PHP, under loose comparison (like
==, or!=, orswitchconditions), values of different types might be equal.For
stringvalues, the empty string''is a special case, in particular the following results might be unexpected: