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Commit 5a60fc5

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‎db.class.php‎

Lines changed: 75 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -2,18 +2,42 @@
22

33
/**
44
* PHP DB Class
5+
* 2021年01月07日 -> Class created
6+
* 2021年03月12日 -> Added rel="canoical|prev|next" to <a> pagination tags
7+
* 2021年03月12日 -> Added a lot of comments
8+
*
9+
* MUST FIX: delete(), $rules inside insert, define $functions on update and insert
10+
*
11+
* MUST CREATE: search method, wordlist method, similarwords method, searchSimilarWord method
512
*/
613

714
class db
815
{
16+
/** This stores the current $connectionName */
917
protected static $connectionName = null;
18+
19+
/** This array stores all $connections added so far on execution */
1020
protected static $connections = array();
21+
22+
/** This will receive the last inserted row $id */
1123
protected static $id = null;
24+
25+
/** This is an array with the objects keys. */
1226
protected static $object = array();
27+
28+
/** It is the $pagedObject. It is set by pagedQuery method */
1329
protected static $pageObject = null;
30+
31+
/** It will receive a $friendURL instance to work with friendly URLs */
1432
protected static $friendlyURL = false;
33+
34+
/** It will receive the time() when the class has first executed anything */
1535
private static $dbInit = null;
36+
37+
/** This is the default class $language */
1638
protected static $language = "en";
39+
40+
/** These are the words that pagination may have */
1741
protected static $defaultPaginationWords = array(
1842
"en" => array(
1943
"class" => "pagination",
@@ -29,6 +53,7 @@ class db
2953
)
3054
);
3155

56+
/** Will return a database instance. It also sets manny vars about the connection, if isn't yet defined */
3257
public static function getInstance()
3358
{
3459
if (self::$dbInit == null) {
@@ -62,6 +87,7 @@ public static function getInstance()
6287
}
6388
}
6489

90+
/** Adds a database connection */
6591
public static function addConnection($connectionName, $connectionCredentials)
6692
{
6793
if (!array_key_exists($connectionName, self::$connections)) {
@@ -70,6 +96,7 @@ public static function addConnection($connectionName, $connectionCredentials)
7096
}
7197
}
7298

99+
/** Defines which connection the class will use */
73100
public static function useConnection($connectionName)
74101
{
75102
if (array_key_exists($connectionName, self::$connections)) {
@@ -78,6 +105,7 @@ public static function useConnection($connectionName)
78105
}
79106
}
80107

108+
/** Sets total amount of requests to +1 */
81109
private static function updateTotalRequests()
82110
{
83111
if (!isset(self::$connections[self::$connectionName]['totalRequests'])) {
@@ -86,16 +114,19 @@ private static function updateTotalRequests()
86114
self::$connections[self::$connectionName]['totalRequests']++;
87115
}
88116

117+
/** Returns the total amount of requests that the class did so far */
89118
public static function getTotalRequests()
90119
{
91120
return (isset(self::$connections[self::$connectionName]['totalRequests']) ? self::$connections[self::$connectionName]['totalRequests'] : 0);
92121
}
93122

123+
/** Checks the server speed */
94124
public static function performance()
95125
{
96126
echo "<!-- Time ellapsed: " . ((int) microtime() - (int) self::$dbInit) . " -->";
97127
}
98128

129+
/** Creates a new DB Object with the given PDO instance */
99130
private static function encapsulate($mixed)
100131
{
101132
if (is_string($mixed)) {
@@ -116,6 +147,7 @@ private static function encapsulate($mixed)
116147
}
117148
}
118149

150+
/** Returns a single row */
119151
public static function fetch($mixed, $simple = false)
120152
{
121153
if (is_string($mixed)) {
@@ -139,6 +171,7 @@ public static function fetch($mixed, $simple = false)
139171
}
140172
}
141173

174+
/** Returns all fetched data */
142175
public static function fetchAll($mixed)
143176
{
144177
$mixed = self::encapsulate($mixed);
@@ -154,12 +187,14 @@ public static function fetchAll($mixed)
154187
}
155188
}
156189

190+
/** It counts the total rows that $mixed have */
157191
public static function count($mixed)
158192
{
159193
$object = self::encapsulate($mixed);
160194
return $object->extra['totalEntries'];
161195
}
162196

197+
/** Checks if the given $query returns null. If it returns null or 0, the function return true (is empty) */
163198
public static function empty($query)
164199
{
165200
if (is_string($query)) {
@@ -171,11 +206,13 @@ public static function empty($query)
171206
}
172207
}
173208

209+
/** Simple query */
174210
public static function query($mixed)
175211
{
176212
return self::encapsulate($mixed);
177213
}
178214

215+
/** This is a paged query */
179216
public static function pagedQuery($mixed, $limit, $page = false, $words = false)
180217
{
181218
if (is_string($mixed)) {
@@ -218,12 +255,14 @@ public static function pagedQuery($mixed, $limit, $page = false, $words = false)
218255
}
219256
}
220257

258+
/** It sets the class $language */
221259
public static function setLanguage($language)
222260
{
223261
self::$language = $language;
224262
return new static();
225263
}
226264

265+
/** It defines the words that the pagination HTML will have */
227266
public static function setPaginationWords($object, $words = false)
228267
{
229268
try {
@@ -243,6 +282,7 @@ public static function setPaginationWords($object, $words = false)
243282
}
244283
}
245284

285+
/** It retrieves the current page */
246286
private static function getPageNow($object = false)
247287
{
248288
if (!$object) {
@@ -274,6 +314,7 @@ private static function getPageNow($object = false)
274314
return $pageNow;
275315
}
276316

317+
/** It creates the pagination HTML */
277318
public static function page($echo = true, $class = "")
278319
{
279320
$totalRows = self::$pageObject->extra['totalEntries'];
@@ -307,15 +348,15 @@ public static function page($echo = true, $class = "")
307348
}
308349
}
309350
$htmlWrapper = "<ul class='pagination {additional}'>{buttons}</ul>";
310-
$htmlButton = "<li {disabled}><a . $words['class'] . " {active}' href='{target}'>{text|number}</a></li>";
351+
$htmlButton = "<li {disabled}><a {rel} class='" . $words['class'] . " {active}' href='{target}'>{text|number}</a></li>";
311352
$buttons = array();
312353
if ($pageNow > 1) {
313354
if (self::$friendlyURL) {
314355
$parts[$keyPart] = self::$friendlyURL->gerarLink($words['url'], $pageNow - 1);
315-
$buttons[] = str_replace(array("{target}", '{text|number}', '{active}', '{disabled}'), array($url . "/" . implode("/", $parts), $words["prev"], '', ''), $htmlButton);
356+
$buttons[] = str_replace(array("{rel}", "{target}", '{text|number}', '{active}', '{disabled}'), array("rel='prev'", $url . "/" . implode("/", $parts), $words["prev"], '', ''), $htmlButton);
316357
} else {
317358
$_GET[$words['url']] = $pageNow - 1;
318-
$buttons[] = str_replace(array("{target}", '{text|number}', '{active}', '{disabled}'), array($url . "?" . http_build_query($_GET), $words["prev"], '', ''), $htmlButton);
359+
$buttons[] = str_replace(array("{rel}", "{target}", '{text|number}', '{active}', '{disabled}'), array("rel='prev'", $url . "?" . http_build_query($_GET), $words["prev"], '', ''), $htmlButton);
319360
}
320361
}
321362
$pageCount = 0;
@@ -324,39 +365,39 @@ public static function page($echo = true, $class = "")
324365
if ($pageCount == $pageNow) {
325366
if (self::$friendlyURL) {
326367
$parts[$keyPart] = self::$friendlyURL->gerarLink($words['url'], $pageNow);
327-
$buttons[] = str_replace(array("{target}", '{text|number}', '{active}', '{disabled}'), array("javascript:void(0)", $pageNow, 'active', 'disabled'), $htmlButton);
368+
$buttons[] = str_replace(array("{rel}", "{target}", '{text|number}', '{active}', '{disabled}'), array("", "javascript:void(0)", $pageNow, 'active', 'disabled'), $htmlButton);
328369
} else {
329370
$_GET[$words['url']] = $pageNow;
330-
$buttons[] = str_replace(array("{target}", '{text|number}', '{active}', '{disabled}'), array("javascript:void(0)", $pageNow, 'active', 'disabled'), $htmlButton);
371+
$buttons[] = str_replace(array("{rel}", "{target}", '{text|number}', '{active}', '{disabled}'), array("", "javascript:void(0)", $pageNow, 'active', 'disabled'), $htmlButton);
331372
}
332373
} else {
333374
if ($pageCount <= $pageNow && ($pageCount >= $pageNow - 4 && ($pageNow == $totalPages || $pageNow + 1 == $totalPages || $pageNow + 2 == $totalPages) || ($pageCount >= $pageNow - 2)) && $pageCount > 0 && count($buttons) < 5 && ($pageCount == $pageNow - 1 || $pageCount == $pageNow - 2 || count($buttons) <= 5)) {
334375
if (self::$friendlyURL) {
335376
$parts[$keyPart] = self::$friendlyURL->gerarLink($words['url'], $pageCount);
336-
$buttons[] = str_replace(array("{target}", '{text|number}', '{active}', '{disabled}'), array($url . "/" . implode("/", $parts), $pageCount, '', ''), $htmlButton);
377+
$buttons[] = str_replace(array("{rel}", "{target}", '{text|number}', '{active}', '{disabled}'), array("", $url . "/" . implode("/", $parts), $pageCount, '', ''), $htmlButton);
337378
} else {
338379
$_GET[$words['url']] = $pageCount;
339-
$buttons[] = str_replace(array("{target}", '{text|number}', '{active}', '{disabled}'), array($url . "?" . http_build_query($_GET), $pageCount, '', ''), $htmlButton);
380+
$buttons[] = str_replace(array("{rel}", "{target}", '{text|number}', '{active}', '{disabled}'), array("", $url . "?" . http_build_query($_GET), $pageCount, '', ''), $htmlButton);
340381
}
341382
}
342383
if ($pageCount >= $pageNow && $pageCount <= $totalPages && count($buttons) <= 5 && ($pageCount == $pageNow + 1 || $pageCount == $pageNow + 2 || count($buttons) <= 5)) {
343384
if (self::$friendlyURL) {
344385
$parts[$keyPart] = self::$friendlyURL->gerarLink($words['url'], $pageCount);
345-
$buttons[] = str_replace(array("{target}", '{text|number}', '{active}', '{disabled}'), array($url . "/" . implode("/", $parts), $pageCount, '', ''), $htmlButton);
386+
$buttons[] = str_replace(array("{rel}", "{target}", '{text|number}', '{active}', '{disabled}'), array("", $url . "/" . implode("/", $parts), $pageCount, '', ''), $htmlButton);
346387
} else {
347388
$_GET[$words['url']] = $pageCount;
348-
$buttons[] = str_replace(array("{target}", '{text|number}', '{active}', '{disabled}'), array($url . "?" . http_build_query($_GET), $pageCount, '', ''), $htmlButton);
389+
$buttons[] = str_replace(array("{rel}", "{target}", '{text|number}', '{active}', '{disabled}'), array("", $url . "?" . http_build_query($_GET), $pageCount, '', ''), $htmlButton);
349390
}
350391
}
351392
}
352393
}
353394
if ($pageNow < $totalPages) {
354395
if (self::$friendlyURL) {
355396
$parts[$keyPart] = self::$friendlyURL->gerarLink($words['url'], $pageNow + 1);
356-
$buttons[] = str_replace(array("{target}", '{text|number}', '{active}', '{disabled}'), array($url . "/" . implode("/", $parts), $words["next"], '', ''), $htmlButton);
397+
$buttons[] = str_replace(array("{rel}", "{target}", '{text|number}', '{active}', '{disabled}'), array("rel='next'", $url . "/" . implode("/", $parts), $words["next"], '', ''), $htmlButton);
357398
} else {
358399
$_GET[$words['url']] = $pageNow + 1;
359-
$buttons[] = str_replace(array("{target}", '{text|number}', '{active}', '{disabled}'), array($url . "?" . http_build_query($_GET), $words["next"], '', ''), $htmlButton);
400+
$buttons[] = str_replace(array("{rel}", "{target}", '{text|number}', '{active}', '{disabled}'), array("rel='next'", $url . "?" . http_build_query($_GET), $words["next"], '', ''), $htmlButton);
360401
}
361402
}
362403
if ($echo) {
@@ -367,16 +408,19 @@ public static function page($echo = true, $class = "")
367408
}
368409
}
369410

411+
/** Returns server date */
370412
public static function date($time = false)
371413
{
372414
return ($time ? date("Y-m-d", $time) : date("Y-m-d"));
373415
}
374416

417+
/** Returns server dateTime */
375418
public static function dateTime($time = false)
376419
{
377420
return ($time ? date("Y-m-d H:s:i", $time) : date("Y-m-d H:s:i"));
378421
}
379422

423+
/** It will change the whole database $collation */
380424
public static function setCollation($collation, $show = false, $execute = false)
381425
{
382426
$db_nome = self::$connections[self::$connectionName]['NAME'];
@@ -403,17 +447,20 @@ public static function setCollation($collation, $show = false, $execute = false)
403447
}
404448
}
405449

450+
/** Will define the $friendlyURL instance on the class */
406451
public static function setFriendlyURL($FriendlyURLInstance)
407452
{
408453
self::$friendlyURL = $FriendlyURLInstance;
409454
return new static();
410455
}
411456

457+
/** It will retrieve the collumns of the given $table */
412458
private static function getTableCollumns($table)
413459
{
414460
return self::fetchAll(self::query("DESCRIBE $table"));
415461
}
416462

463+
/** It will fix invalid $data keys before insert them on the $table. It removes not used keys inside $data, and bind a empty string if a specific $key that exists on the table, doesn't exist on $data */
417464
private static function fixDataCollumns($data, $table, &$newData = array(), $mode = "insert")
418465
{
419466
$collumns = self::getTableCollumns($table);
@@ -465,21 +512,25 @@ private static function fixDataCollumns($data, $table, &$newData = array(), $mod
465512
return $newData;
466513
}
467514

515+
/** It will prepare a given $sql to the given $object */
468516
public static function prepare($object, $sql)
469517
{
470518
return $object->prepare($sql);
471519
}
472520

521+
/** It will set the given $value on the specific $key, inside the $object. Object is a PDO Statement */
473522
public static function set(&$object, $key, $value)
474523
{
475524
$object->bindValue(":" . $key, $value);
476525
}
477526

527+
/** It executes any given $sql */
478528
public static function execute($sql)
479529
{
480530
return self::getInstance()->exec($sql);
481531
}
482532

533+
/** WORK IN PROGRESS - It will insert $data on a specific $table. The $rules are optional */
483534
public static function insert($data, $table, $rules = array())
484535
{
485536
self::fixDataCollumns($data, $table, $newData);
@@ -498,11 +549,13 @@ public static function insert($data, $table, $rules = array())
498549
}
499550
}
500551

552+
/** It will return the id of the last inserted row */
501553
public static function id()
502554
{
503555
return self::$id;
504556
}
505557

558+
/** It will update a row on a specific $table with new $data. The row must attend to the $rules */
506559
public static function update($data, $table, $rules = array())
507560
{
508561
self::fixDataCollumns($data, $table, $newData, "update");
@@ -535,6 +588,7 @@ public static function update($data, $table, $rules = array())
535588
}
536589
}
537590

591+
/** WORK IN PROGRESS - It will delete a record - or all - on a specific $table */
538592
public static function delete($table, $rules = array())
539593
{
540594
if (!empty($rules)) {
@@ -558,6 +612,7 @@ public static function delete($table, $rules = array())
558612
}
559613
}
560614

615+
/** It will normalize a string to be accepted on URL addresses */
561616
public function URLNormalize($string)
562617
{
563618
$string = preg_replace('/[áàãâä]/ui', 'a', $string);
@@ -572,22 +627,31 @@ public function URLNormalize($string)
572627
}
573628
}
574629

630+
/** DB Object class - it will store the result of the request */
575631
class dbObject
576632
{
633+
/** It is the DB instance */
577634
protected static $instance = null;
635+
636+
/** Array with extra info */
578637
public $extra = null;
579638

639+
/** It already sets a number of info on $extra */
580640
public function __construct($instance, $extra = array())
581641
{
582642
$this->setInstance($instance);
583643
$this->extra = $extra;
584644
$this->extra['totalEntries'] = $instance->rowCount();
585645
return $this;
586646
}
647+
648+
/** It will set the $instance */
587649
private static function setInstance($instance)
588650
{
589651
self::$instance = $instance;
590652
}
653+
654+
/** It will retrieve the object's DB $instance */
591655
public static function getInstance()
592656
{
593657
return self::$instance;

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