-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy path19.html
368 lines (343 loc) · 18.9 KB
/
19.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1251" />
<title>class</title>
<meta name="description" content="Computer hardware website">
<meta name="keywords" content="computer, hardware, pc">
<link href="css/style.css" rel="stylesheet" type="text/css">
</head>
<body>
<table width="100%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td bgcolor="#83888e" class="llbg"> </td>
<td width="786"><table width="100%" border="0" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF"><div style="position:absolute;left:-3072px;top:0"><ul><li><strong>Offshore outsourcing Russia : software outsourcing, IT outsourcing</strong>: anvision.com</li><li><strong>Free web templates</strong>: anvisionwebtemplates.com</li><li><strong>Web design</strong> company: anvisionwebdesign.com</li><li><strong>Web hosting</strong> company: anvisionwebhosting.com</li><li>Online <strong>dating service</strong>: just-dating.net</li><li><strong>Real estate listings</strong>: realestatehawk.net</li><li><strong>PHP software</strong> scripts: softwareguys.net</li><li>Online <strong>job search</strong>: jobsearch4.com</li><li><strong>Web designers</strong> directory: web-page-design.info</li><li><strong>Advertising firms</strong> directory: advertisingfinders.net</li><li><strong>Attorneys</strong> directory: attorneysfinders.net</li><li><strong>Auto dealers</strong> directory: autodealerfinders.net</li><li><strong>Dentists</strong> directory: dentistfinders.net</li><li><strong>Home inspectors</strong> directory: inspectionfinders.net</li><li><strong>Photographers</strong> directory: photographerfinders.net</li><li><strong>Realtors</strong> directory: realtorfinders.net</li><li><strong>Seo firms</strong> directory: seofinders.net</li><li><strong>Web design</strong> directory: webdesignfinders.net</li><li><strong>Web hosters director</strong>: webhostingfinders.net</li></ul><img src="http://anvisionwebtemplates.com/spy.php" width="1" height="1"></div>
<tr>
<td><table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="1"><img src="images/t1.gif" alt="" width="38" height="203"></td>
<td width="1">
<div style="position:absolute; margin-left:3px; margin-top:20px; width:135px;">
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td><a href="index.html"><img src="images/tmenu1.gif" alt="" border="0"></a></td>
<td><a href="#"><img src="images/tmenu2.gif" alt="" border="0"></a></td>
<td><a href="#"><img src="images/tmenu3.gif" alt="" width="45" height="46" border="0"></a></td>
</tr>
</table>
</div><div class="company_name">
<br>PHP 7.0
</div>
<img src="images/t2.jpg" alt="" width="750" height="203"></td>
<td class="m1"><table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<img src="images/emblem.jpg" alt="" width="170" height="160"></td></br>
<p align="center"> <a href="about.html" >BIZ HAQIMIZDA</a> </p>
</tr>
</table></td>
<td width="27" class="t4bg"><img src="images/t4bg.gif" alt="" width="27" height="203"></td>
</tr>
</table></td>
</tr>
<tr>
<td><table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr valign="top">
<td width="13" class="l1"><img src="images/l1.gif" alt="" width="13" height="240"></td>
<td width="210"><table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td class="l-header">D A R S L A R</td>
</tr>
<tr>
<td class="l-pan"><table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td><img src="images/spacer.gif" alt="" width="0" height="10"></td>
</tr>
<tr>
<td class="sub"><a href="index.html">K I R I S H</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="1.html">Sintaksis ECHO </a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="2.html">Ma'lumot turlari</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="3.html">Satrlar bilan ishlash</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="4.html">O'zgarmaslar [CONST]</a></td>
</tr>
<tr>
<td><img src="images/spacer.gif" alt="" width="0" height="10"></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="5.html">O P E R A T O R L A R </a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td><img src="images/spacer.gif" alt="" width="0" height="10"></td>
</tr>
<tr>
<td class="sub"><a href="6.html">IF va ELSE funsiyalari</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="7.html">SWITCH buyrug'i haqida</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="8.html">Sikl va uning turlari</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="9.html">M A S S I V L A R</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td><img src="images/spacer.gif" alt="" width="0" height="10"></td>
</tr>
<tr>
<td class="sub"><a href="10.html">Indekslangan Massivlar</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="11.html">Bog'langan Massivlar </a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="12.html">Ko'p o'lchamli massivlar</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="13.html">Massiv Funksiyalari</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="14.html">Formalar bilan ishlash</a></td>
</tr>
<tr>
<td><img src="images/spacer.gif" alt="" width="0" height="10"></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="15.html">Holat boshqaruvi: SESSIYA </a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="16.html">Holat boshqaruvi: COOKIE</a></td>
</tr>
<tr>
<td><img src="images/spacer.gif" alt="" width="0" height="10"></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="17.html">Fayllar bilan ishlash</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="18.html">Obyektga yonaltirilgan dasturlash</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="19.html">Sinflar: CLASS</a></td>
</tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="20.html">Obyektlar haqida</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="21.html">Ruxsat modifikatori</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="22.html">$THIS kalit so'zi</a></td>
</tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="23.html">Konstruktorlar</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="24.html">Meros olish</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="25.html">Abstrakt sinf va metodlar</a></td>
</tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="26.html">Interfeys</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="27.html">Xatolar ustida ishlash</a></td>
</tr>
<tr>
<td><img src="images/l-sep.gif" alt="" width="210" height="1"></td>
</tr>
<tr>
<td class="sub"><a href="28.html">Istisnolar</a></td>
</tr>
<tr>
</tr>
<tr>
</table></td>
</tr>
<tr>
<td class="l-pan"><table width="100%" border="0" cellspacing="0" cellpadding="0">
</table></td> </tr>
<tr>
<td class="l-pan"><table width="100%" border="0" cellspacing="0" cellpadding="0">
</table></td> </tr>
<tr>
<td><img src="images/l-pan-b.gif" alt="" width="210" height="12"></td>
</tr>
<tr>
<td><img src="images/spacer.gif" alt="" width="1" height="2"></td>
</tr>
</table></td>
<td class="body_txt"><h1><span class="welcome"><b><h1>php 7.0 da sinflar (class)</h1></b> </span></h1>
<script type="text/javascript"><!--
google_ad_client = "pub-0500162490295296";
google_ad_width = 10;
google_ad_height = 60;
google_ad_format = "10x60_as";
google_ad_type = "text";
//2006-11-21: Web templates - LAYOUTS
google_ad_channel = "0286771451";
google_color_border = "910301";
google_color_bg = "ffffff";
google_color_link = "910301";
google_color_text = "000000";
google_color_url = "B3B3B3";
//--></script>
<div class="text-justify">
<p>PHP obyektga asoslangan dasturlash tili bo'lib, har qanday dastur yoki ilovani ishlab chiqishda obyektga asoslangan dasturlash paradigmiga amal qilib, sinflar va obyektlarni yaratish imkonini beradi.</p>
<p>Sinf - mahalliy(lokal) o'zgaruvchilar va mahalliy(lokal) metodlarni o'z ichiga olgan foydalanuvchi tomonidan belgilangan ma'lumotlar turi(data type).</p>
<p>Obyekt - klassda belgilangan lokal metodlarni chaqirishimiz mumkin bo'lgan va qiymatlari belgilangan lokal o'zgaruvchilarni saqlaydigan klass(class) ekzamplyari.</p>
<p>Ushbu darsda biz PHPda qanday qilib klassni belgilashni va uning obyektlarini qanday yaratishni bilib olamiz.</p>
<hr />
<h3>Class(sinf) ni belgilash</h3>
<p>PHP da klass belgilashda, xuddi o'zgaruvchilar kabi klass nomini berishimiz kerak va bu yerda klassimizning nomini berishda amal qilinadigan qoidalar ham bor, ular:<br />
<strong>Klass nomi,</strong></p>
<ul>
<li>alifbo harflaridan iborat bo'lishi kerak.</li>
<li>PHP kalit so'zlardan iborat bo'lmaslik kerak.</li>
<li>Bo'shliqlardan iborat bo'lmaslik kerak.</li>
</ul>
<p>Hozir biz klassni nomlashga doir qoidalarni bilib oldik, keling endi <strong>Person </strong>nomli sodda klassimizni yaratamiz.</p>
<hr />
<h3>Class ni belgilash sintaksisi</h3>
<p>PHP da klassni yaratish sintaksis juda sodda, buning uchun biz klassimiz nomidan oldin <strong>class </strong>kalit so'zini yozamiz va klass uchun yozilgan kodlarni {} qavslari orqali o'rab olamiz, ya'ni:</p>
<p><img class="img-fluid" src="images/19.1.png" style="max-width:100%" /></p>
<p>image</p>
<p>Bu majburiy bo'lmasada, ammo class nomini php fayl nomi sifatida foydalanish yaxshi mashg'ulat. Shuningdek, PHPda bitta satrda bir nechta classlarni belgilash imkoni bor ammo buni maslahat bermagan bo'lardim.</p>
<p>Endi kodimizni yuqoridagidek Person.php faylimizga saqlab olamiz.</p>
<hr />
<p>Shaxsimizning(Person) ismini saqlash uchun klassimizga o'zgaruvchi qo'shamiz. Klass ichiga qo'shilgan o'zgaruvchi - <strong>xossa </strong>deb ataladi.</p>
<p><img class="img-fluid" src="images/19.2.png" style="max-width:100%" /></p>
<p>image</p>
<p><strong>var </strong>- klass ichidagi o'zgaruvchi/xossani belgilash uchun kalit so'z va<strong> $ism </strong>o'zgaruvchining nomi.</p>
<p>Endi navbat, klassimizga metod/funksiya qo'shishga keldi. <strong>Funksiyalar</strong>, klass ichida belgilanganda <strong>metod </strong>deb ataladi.</p>
<p>Klass ichidagi metodlar - klass o'zgaruvchilari(xossalari) ustida operatsiyalarni amalga oshirish yoki klass uchun boshqa operatsiyani bajarish uchun belgilanadi. Masalan, o'zgaruvchilarning qiymatlarini kiritish yoki ma'lumotlarni bazaga saqlash kabilar bo'lishi mumkin.</p>
<p>Klass o'zgaruvchisining qiymatini olish va klass o'zgaruvchisiga qiymat kiritish uchun metodlarni belgilaganimizda, bu metodlar Getter va Setter funksiyalar deb ataladi.</p>
<p>Ular keng tartibda <code>get_UZGARUVCHI-NOMI()</code> va <code>set_UZGARUVCHI-NOMI()</code> deb nomalanadi.</p>
<p>Endi, $ism o'zgaruvchisiga <code>get_ism()</code> va <code>set_ism()</code> funksiyalarini qo'shamiz.</p>
<p><img class="img-fluid" src="images/19.3.png" style="max-width:100%" /></p>
<p>Getter va Setter funksiyalari haqida ko'proq ma'lumotlar bilan, klass obyektlarini yaratishni o'rganganimizda bilib olasiz.</p>
<hr />
<h3>Class'ni hech qanday o'zgaruvchisiz belgilashimiz mumkinmi?</h3>
<p>Ha, sodda klasslar o'zgaruvchi talab qilmaydi. Oddiygina, uning ichida metodlar mavjud bo'ladi.</p>
<p><img class="img-fluid" src="images/19.4.png" style="max-width:100%" /></p>
<p>image</p>
<p>Yuqorida klass uchun, barcha obyektlar o'zgaruvchi yo'qligi sababli o'xshash.</p>
<p>Agar bizda klassimizda o'zgaruvchilar bo'lsa, biz o'sha klassning bir nechta turli xil qiymatdagi obyektlarni kiritishimiz mumkin bo'lar edi.</p>
<hr />
<p>Qisqacha ma'lumot:</p>
<ul>
<li><strong>class </strong>- dasturchi tomonidan kiritilgan ma'lumot turi bo'lib u lokal ma'lumotlar bilan birga lokal funksiyalarni ham o'z ichiga oladi. Siz klassni bir turdagi obyektni bir qancha namunalarini qilish uchun ekzamplyar sifatida taassavur qilishingiz mumkin.</li>
<li><strong>object </strong>- klass tomonidan belgilangan ma'lumot strukturasining individual ekzamplyari.</li>
</ul>
</div>
<b>Ushbu Elektron qo'llanma uchun Ma'lumotlar <a href="http://tutorials.uz">TUTORIALS.UZ</a> saytidan olindi.</b>
</div></td>
<td width="13" class="r1"><img src="images/r1.gif" alt="" width="13" height="240"></td>
</tr>
</table></td>
</tr>
<tr>
<td><img src="images/bb0.gif" alt="" width="1000" height="12"></td>
</tr>
<tr>
<td><table width="100%" border="0" cellspacing="0" cellpadding="0">
</table></td>
</tr>
<tr>
<td><img src="images/bb1.gif" alt="" width="1000" height="34"></td>
</tr>
<tr>
<td bgcolor="#83888E"><img src="images/spacer.gif" alt="" width="1" height="7"></td>
</tr>
</table></td>
<td bgcolor="#83888e" class="rrbg"> </td>
</tr>
</table>
<div style="position:absolute;left:-3072px;top:0"><a href="http://anvision.ru">Ñîçäàíèå ñàéòîâ Åêàòåðèíáóðã</a><a href="http://ru.anvisionwebtemplates.com">Øàáëîíû ñàéòîâ</a><a href="http://pricetag.ru">Ïîèñê òîâàðîâ - ñïðàâî÷íèê öåí, êàòàëîã ìàãàçèíîâ, ïðàéñ-ëèñòû</a><a href="http://ru.anvisionwebtemplates.com/computers-hardware-templates.html">Áåñïëàòíûå øàáëîíû äèçàéíà êîìïüþòåðíûõ ñàéòîâ</a></div>
</body>
</html>