我有一个网页的 href属性收集的字符串数组。 现在，我需要过滤该数组，并获得一个新的入站URL 数组，这些URL指向我收集它们的同一域。 考虑到字符串应该为：
我正在寻找一个考虑所有可能情况或本机PHP解决方案的过滤器回调。我试图不使用像http://url.thephpleague.com/这样的外部库。
array (
0 => '//www.w3schools.com',
1 => 'javascript:void(0);',
2 => '/default.asp',
3 => '/html/default.asp',
4 => '/css/default.asp',
5 => '/js/default.asp',
6 => '/sql/default.asp',
7 => '/php/default.asp',
8 => '/bootstrap/default.asp',
9 => '/howto/default.asp',
10 => '/jquery/default.asp',
11 => '/w3css/default.asp',
12 => '/python/default.asp',
13 => '/xml/default.asp',
14 => 'javascript:void(0);',
15 => 'javascript:void(0);',
16 => 'javascript:void(0);',
17 => '/forum/default.asp',
18 => 'javascript:void(0);',
19 => 'javascript:void(0);',
20 => '/html/default.asp',
21 => '/css/default.asp',
22 => '/w3css/default.asp',
23 => '/colors/default.asp',
24 => '/bootstrap/default.asp',
25 => '/bootstrap4/default.asp',
26 => '/graphics/default.asp',
27 => '/icons/default.asp',
28 => '/howto/default.asp',
29 => '/js/default.asp',
30 => '/jquery/default.asp',
31 => '/angular/default.asp',
32 => '/js/js_json_intro.asp',
33 => '/js/js_ajax_intro.asp',
34 => '/w3js/default.asp',
35 => '/sql/default.asp',
36 => '/php/default.asp',
37 => '/python/default.asp',
38 => '/java/default.asp',
39 => '/asp/default.asp',
40 => '/nodejs/default.asp',
41 => '/nodejs/nodejs_raspberrypi.asp',
42 => '/w3css/w3css_templates.asp',
43 => '/browsers/default.asp',
44 => '/cert/default.asp',
45 => '/tryit/default.asp',
46 => '/whatis/default.asp',
47 => '/xml/default.asp',
48 => '/xml/ajax_intro.asp',
49 => '/xml/dom_intro.asp',
50 => '/xml/xml_dtd_intro.asp',
51 => '/xml/schema_intro.asp',
52 => '/xml/xsl_intro.asp',
53 => '/xml/xpath_intro.asp',
54 => '/xml/xquery_intro.asp',
55 => '/tags/default.asp',
56 => '/tags/ref_eventattributes.asp',
57 => '/colors/default.asp',
58 => '/tags/ref_attributes.asp',
59 => '/tags/ref_canvas.asp',
60 => '/graphics/svg_reference.asp',
61 => '/graphics/google_maps_reference.asp',
62 => '/charsets/default.asp',
63 => '/charsets/ref_html_ascii.asp',
64 => '/charsets/ref_html_ansi.asp',
65 => '/charsets/ref_html_ansi.asp',
66 => '/charsets/ref_html_8859.asp',
67 => '/charsets/ref_html_symbols.asp',
68 => '/charsets/ref_html_utf8.asp',
69 => '/cssref/default.asp',
70 => '/cssref/css3_browsersupport.asp',
71 => '/cssref/css_selectors.asp',
72 => '/w3css/w3css_references.asp',
73 => '/bootstrap/bootstrap_ref_all_classes.asp',
74 => '/icons/icons_reference.asp',
75 => '/xml/dom_nodetype.asp',
76 => '/xml/dom_http.asp',
77 => '/xml/xsl_elementref.asp',
78 => '/xml/schema_elements_ref.asp',
79 => '/jsref/default.asp',
80 => '/jsref/default.asp',
81 => '/jquery/jquery_ref_overview.asp',
82 => '/angular/angular_ref_directives.asp',
83 => '/w3js/w3js_references.asp',
84 => '/php/php_ref_overview.asp',
85 => '/sql/sql_ref_keywords.asp',
86 => '/python/python_reference.asp',
87 => '/asp/asp_ref_response.asp',
88 => '/html/html_examples.asp',
89 => '/html/html_exercises.asp',
90 => '/css/css_examples.asp',
91 => '/css/css_exercises.asp',
92 => '/w3css/w3css_examples.asp',
93 => '/w3css/w3css_templates.asp',
94 => '/bootstrap/bootstrap_examples.asp',
95 => '/howto/default.asp',
96 => '/graphics/svg_examples.asp',
97 => '/js/js_examples.asp',
98 => '/js/js_exercises.asp',
99 => '/js/js_dom_examples.asp',
100 => '/jquery/jquery_examples.asp',
101 => '/angular/angular_examples.asp',
102 => '/js/js_ajax_examples.asp',
103 => '/w3js/w3js_examples.asp',
104 => '/php/php_examples.asp',
105 => '/asp/asp_examples.asp',
106 => '/sql/sql_exercises.asp',
107 => '/python/python_exercises.asp',
108 => '/xml/xml_examples.asp',
109 => '/xml/xsl_examples.asp',
110 => '/xml/xpath_examples.asp',
111 => '/xml/schema_example.asp',
112 => '/graphics/svg_examples.asp',
113 => '/quiztest/quiztest.asp?Qtest=HTML',
114 => '/quiztest/quiztest.asp?Qtest=CSS',
115 => '/quiztest/quiztest.asp?Qtest=JavaScript',
116 => '/quiztest/quiztest.asp?Qtest=Bootstrap',
117 => '/quiztest/quiztest.asp?Qtest=jQuery',
118 => '/quiztest/quiztest.asp?Qtest=PHP',
119 => '/quiztest/quiztest.asp?Qtest=SQL',
120 => '/quiztest/quiztest.asp?Qtest=XML',
121 => 'javascript:void(0)',
122 => 'default.asp',
123 => 'php_intro.asp',
124 => 'php_install.asp',
125 => 'php_syntax.asp',
126 => 'php_variables.asp',
127 => 'php_echo_print.asp',
128 => 'php_datatypes.asp',
129 => 'php_string.asp',
130 => 'php_constants.asp',
131 => 'php_operators.asp',
132 => 'php_if_else.asp',
133 => 'php_switch.asp',
134 => 'php_looping.asp',
135 => 'php_looping_for.asp',
136 => 'php_functions.asp',
137 => 'php_arrays.asp',
138 => 'php_arrays_sort.asp',
139 => 'php_superglobals.asp',
140 => 'php_forms.asp',
141 => 'php_form_validation.asp',
142 => 'php_form_required.asp',
143 => 'php_form_url_email.asp',
144 => 'php_form_complete.asp',
145 => 'php_arrays_multi.asp',
146 => 'php_date.asp',
147 => 'php_includes.asp',
148 => 'php_file.asp',
149 => 'php_file_open.asp',
150 => 'php_file_create.asp',
151 => 'php_file_upload.asp',
152 => 'php_cookies.asp',
153 => 'php_sessions.asp',
154 => 'php_filter.asp',
155 => 'php_filter_advanced.asp',
156 => 'php_error.asp',
157 => 'php_exception.asp',
158 => 'php_mysql_intro.asp',
159 => 'php_mysql_connect.asp',
160 => 'php_mysql_create.asp',
161 => 'php_mysql_create_table.asp',
162 => 'php_mysql_insert.asp',
163 => 'php_mysql_insert_lastid.asp',
164 => 'php_mysql_insert_multiple.asp',
165 => 'php_mysql_prepared_statements.asp',
166 => 'php_mysql_select.asp',
167 => 'php_mysql_delete.asp',
168 => 'php_mysql_update.asp',
169 => 'php_mysql_select_limit.asp',
170 => 'php_xml_parsers.asp',
171 => 'php_xml_simplexml_read.asp',
172 => 'php_xml_simplexml_get.asp',
173 => 'php_xml_parser_expat.asp',
174 => 'php_xml_dom.asp',
175 => 'php_ajax_intro.asp',
176 => 'php_ajax_php.asp',
177 => 'php_ajax_database.asp',
178 => 'php_ajax_xml.asp',
179 => 'php_ajax_livesearch.asp',
180 => 'php_ajax_rss_reader.asp',
181 => 'php_ajax_poll.asp',
182 => 'php_examples.asp',
183 => 'php_quiz.asp',
184 => 'php_exercises.asp',
185 => 'php_exam.asp',
186 => 'php_ref_overview.asp',
187 => 'php_ref_array.asp',
188 => 'php_ref_calendar.asp',
189 => 'php_ref_date.asp',
190 => 'php_ref_directory.asp',
191 => 'php_ref_error.asp',
192 => 'php_ref_filesystem.asp',
193 => 'php_ref_filter.asp',
194 => 'php_ref_ftp.asp',
195 => 'php_ref_http.asp',
196 => 'php_ref_libxml.asp',
197 => 'php_ref_mail.asp',
198 => 'php_ref_math.asp',
199 => 'php_ref_misc.asp',
200 => 'php_ref_mysqli.asp',
201 => 'php_ref_simplexml.asp',
202 => 'php_ref_string.asp',
203 => 'php_ref_xml.asp',
204 => 'php_ref_zip.asp',
205 => 'php_ref_timezones.asp',
206 => 'php_ref_http.asp',
207 => 'php_ref_mail.asp',
208 => 'http://www.xmlsoft.org/downloads.html',
209 => 'func_libxml_clear_errors.asp',
210 => 'func_libxml_get_errors.asp',
211 => 'func_libxml_get_last_error.asp',
212 => 'func_libxml_use_internal_errors.asp',
213 => 'php_ref_http.asp',
214 => 'php_ref_mail.asp',
215 => '/colors/colors_picker.asp',
216 => '/colors/colors_picker.asp',
217 => '/howto/default.asp',
218 => '/howto/howto_js_tabs.asp',
219 => '/howto/howto_css_dropdown.asp',
220 => '/howto/howto_js_accordion.asp',
221 => '/howto/howto_js_sidenav.asp',
222 => '/howto/howto_js_topnav.asp',
223 => '/howto/howto_css_modals.asp',
224 => '/howto/howto_js_progressbar.asp',
225 => '/howto/howto_css_parallax.asp',
226 => '/howto/howto_css_login_form.asp',
227 => '/howto/howto_html_include.asp',
228 => '/howto/howto_google_maps.asp',
229 => '/howto/howto_js_rangeslider.asp',
230 => '/howto/howto_css_tooltip.asp',
231 => '/howto/howto_js_slideshow.asp',
232 => '/howto/howto_js_filter_lists.asp',
233 => '/howto/howto_js_sort_list.asp',
234 => 'javascript:void(0);',
235 => '//www.w3schools.com/cert/default.asp',
236 => '/cert/cert_html.asp',
237 => '/cert/cert_css.asp',
238 => '/cert/cert_javascript.asp',
239 => '/cert/cert_php.asp',
240 => '/cert/cert_jquery.asp',
241 => '/cert/cert_bootstrap.asp',
242 => '/cert/cert_xml.asp',
243 => '//www.w3schools.com/cert/default.asp',
244 => 'javascript:void(0);',
245 => 'javascript:void(0);',
246 => '/forum/default.asp',
247 => '/about/default.asp',
248 => '/html/default.asp',
249 => '/css/default.asp',
250 => '/js/default.asp',
251 => '/howto/default.asp',
252 => '/w3css/default.asp',
253 => '/bootstrap/default.asp',
254 => '/sql/default.asp',
255 => '/php/default.asp',
256 => '/jquery/default.asp',
257 => '/python/default.asp',
258 => '/tags/default.asp',
259 => '/cssref/default.asp',
260 => '/jsref/default.asp',
261 => '/w3css/w3css_references.asp',
262 => '/bootstrap/bootstrap_ref_all_classes.asp',
263 => '/sql/sql_ref_keywords.asp',
264 => '/php/php_ref_overview.asp',
265 => '/colors/colors_names.asp',
266 => '/jquery/jquery_ref_overview.asp',
267 => '/python/python_reference.asp',
268 => '/html/html_examples.asp',
269 => '/css/css_examples.asp',
270 => '/js/js_examples.asp',
271 => '/howto/default.asp',
272 => '/w3css/w3css_examples.asp',
273 => '/bootstrap/bootstrap_examples.asp',
274 => '/php/php_examples.asp',
275 => '/jquery/jquery_examples.asp',
276 => '/angular/angular_examples.asp',
277 => '/xml/xml_examples.asp',
278 => '/cert/default.asp',
279 => '/cert/default.asp',
280 => '/cert/default.asp',
281 => '/cert/default.asp',
282 => '/cert/default.asp',
283 => '/cert/default.asp',
284 => '/cert/default.asp',
285 => '/about/about_copyright.asp',
286 => '/about/about_privacy.asp',
287 => '/about/about_copyright.asp',
288 => '//www.w3schools.com/w3css/',
289 => '//www.w3schools.com',
) array (
0 => 'https://www.bitdegree.org/',
1 => 'https://www.bitdegree.org/',
2 => 'https://www.bitdegree.org',
3 => 'https://www.bitdegree.org/courses',
4 => 'https://www.bitdegree.org/courses',
5 => 'https://www.bitdegree.org/tag/gamified',
6 => 'https://www.bitdegree.org/learn/',
7 => 'https://www.bitdegree.org/tutorials/',
8 => 'https://www.bitdegree.org/register',
9 => 'https://www.bitdegree.org/learn/',
10 => '#',
11 => 'https://www.bitdegree.org/learn/html-basics/',
12 => 'https://www.bitdegree.org/learn/css-basics/',
13 => 'https://www.bitdegree.org/learn/learn-php/',
14 => 'https://www.bitdegree.org/learn/javascript-basics/',
15 => 'https://www.bitdegree.org/learn/learn-sql/',
16 => 'https://www.bitdegree.org/learn/bootstrap-css/',
17 => 'https://www.bitdegree.org/learn/how-does-blockchain-work/',
18 => 'https://www.bitdegree.org/learn/jquery-tutorial/',
19 => 'https://www.bitdegree.org/learn/how-to-install-git/',
20 => 'https://www.bitdegree.org/learn/inspect-element/',
21 => 'https://www.bitdegree.org/learn/html-basics/',
22 => 'https://www.bitdegree.org/learn/css-basics/',
23 => 'https://www.bitdegree.org/learn/learn-php/',
24 => 'https://www.bitdegree.org/learn/javascript-basics/',
25 => 'https://www.bitdegree.org',
26 => 'https://www.bitdegree.org/courses',
27 => 'https://www.bitdegree.org/courses',
28 => 'https://www.bitdegree.org/tag/gamified',
29 => 'https://www.bitdegree.org/learn/',
30 => 'https://www.bitdegree.org/tutorials/',
31 => 'https://www.bitdegree.org/register',
32 => 'https://www.bitdegree.org',
33 => '#sidebar-menu',
34 => 'https://www.bitdegree.org/learn/',
35 => 'https://www.bitdegree.org/learn/html-basics/',
36 => 'https://www.bitdegree.org/learn/css-basics/',
37 => 'https://www.bitdegree.org/learn/learn-php/',
38 => 'https://www.bitdegree.org/learn/javascript-basics/',
39 => 'https://www.bitdegree.org/learn/learn-sql/',
40 => 'https://www.bitdegree.org/learn/bootstrap-css/',
41 => 'https://www.bitdegree.org/learn/how-does-blockchain-work/',
42 => 'https://www.bitdegree.org/learn/jquery-tutorial/',
43 => 'https://www.bitdegree.org/learn/how-to-install-git/',
44 => 'https://www.bitdegree.org/learn/inspect-element/',
45 => 'https://www.bitdegree.org/courses/learn-solidity-space-doggos/',
46 => 'https://www.bitdegree.org/',
47 => '#sidebar-menu-toggle',
48 => 'https://www.bitdegree.org/learn/learn-php/',
49 => 'https://www.bitdegree.org/learn/what-is-php/',
50 => 'https://www.bitdegree.org/learn/how-to-install-php/',
51 => 'https://www.bitdegree.org/learn/php-code/',
52 => 'https://www.bitdegree.org/learn/php-variable-scope/',
53 => 'https://www.bitdegree.org/learn/php-class-example/',
54 => 'https://www.bitdegree.org/learn/php-data-types/',
55 => 'https://www.bitdegree.org/learn/php-ajax-example/',
56 => 'https://www.bitdegree.org/learn/what-is-ajax/',
57 => 'https://www.bitdegree.org/learn/php-ajax-search/',
58 => 'https://www.bitdegree.org/learn/php-ajax-post/',
59 => 'https://www.bitdegree.org/learn/ajax-polling/',
60 => 'https://www.bitdegree.org/learn/php-rss-feed-reader/',
61 => 'https://www.bitdegree.org/learn/php-read-xml/',
62 => 'https://www.bitdegree.org/learn/php-array/',
63 => 'https://www.bitdegree.org/learn/php-array-of-arrays/',
64 => 'https://www.bitdegree.org/learn/php-sort-array-by-key/',
65 => 'https://www.bitdegree.org/learn/php-define-constant/',
66 => 'https://www.bitdegree.org/learn/php-isset/',
67 => 'https://www.bitdegree.org/learn/php-date-time/',
68 => 'https://www.bitdegree.org/learn/php-error-handling/',
69 => 'https://www.bitdegree.org/learn/php-try-catch/',
70 => 'https://www.bitdegree.org/learn/php-read-file/',
71 => 'https://www.bitdegree.org/learn/php-write-to-file/',
72 => 'https://www.bitdegree.org/learn/how-to-open-a-php-file/',
73 => 'https://www.bitdegree.org/learn/php-file-upload/',
74 => 'https://www.bitdegree.org/learn/php-filter-sanitize/',
75 => 'https://www.bitdegree.org/learn/php-sanitize-input/',
76 => 'https://www.bitdegree.org/learn/php-form-example/',
77 => 'https://www.bitdegree.org/learn/php-required-field/',
78 => 'https://www.bitdegree.org/learn/php-preg_match/',
79 => 'https://www.bitdegree.org/learn/php-form-validation/',
80 => 'https://www.bitdegree.org/learn/php-form-action/',
81 => 'https://www.bitdegree.org/learn/php-function/',
82 => 'https://www.bitdegree.org/learn/php-if-else/',
83 => 'https://www.bitdegree.org/learn/php-include-file/',
84 => 'https://www.bitdegree.org/learn/php-while-loop/',
85 => 'https://www.bitdegree.org/learn/php-foreach-loop/',
86 => 'https://www.bitdegree.org/learn/php-mysql-connect/',
87 => 'https://www.bitdegree.org/learn/mysql-create-database/',
88 => 'https://www.bitdegree.org/learn/mysql-create-table-example/',
89 => 'https://www.bitdegree.org/learn/mysql-delete-row/',
90 => 'https://www.bitdegree.org/learn/mysql-insert-into/',
91 => 'https://www.bitdegree.org/learn/mysql-last-insert-id/',
92 => 'https://www.bitdegree.org/learn/mysql-insert-multiple-rows/',
93 => 'https://www.bitdegree.org/learn/php-mysql-database/',
94 => 'https://www.bitdegree.org/learn/php-pdo/',
95 => 'https://www.bitdegree.org/learn/mysql-select-database/',
96 => 'https://www.bitdegree.org/learn/mysql-limit-offset/',
97 => 'https://www.bitdegree.org/learn/mysql-update-syntax/',
98 => 'https://www.bitdegree.org/learn/php-or-operator/',
99 => 'https://www.bitdegree.org/learn/php-calendar-code/',
100 => 'https://www.bitdegree.org/learn/php-date-format/',
101 => 'https://www.bitdegree.org/learn/php-directory/',
102 => 'https://www.bitdegree.org/learn/php-error-handler/',
103 => 'https://www.bitdegree.org/learn/php-file-function/',
104 => 'https://www.bitdegree.org/learn/php-filter/',
105 => 'https://www.bitdegree.org/learn/php-create-directory/',
106 => 'https://www.bitdegree.org/learn/php-http-response/',
107 => 'https://www.bitdegree.org/learn/php-libxml/',
108 => 'https://www.bitdegree.org/learn/php-mail-function/',
109 => 'https://www.bitdegree.org/learn/php-math-functions/',
110 => 'https://www.bitdegree.org/learn/__trashed-7/',
111 => 'https://www.bitdegree.org/learn/php-mysqli/',
112 => 'https://www.bitdegree.org/learn/php-simplexml/',
113 => 'https://www.bitdegree.org/learn/php-string-replace/',
114 => 'https://www.bitdegree.org/learn/xml-parsing/',
115 => 'https://www.bitdegree.org/learn/php-zip-files/',
116 => 'https://www.bitdegree.org/learn/php-sessions/',
117 => 'https://www.bitdegree.org/learn/php-string-length/',
118 => 'https://www.bitdegree.org/learn/php-global-variable/',
119 => 'https://www.bitdegree.org/learn/php-switch-case/',
120 => 'https://www.bitdegree.org/learn/xml-parser/',
121 => 'https://www.bitdegree.org/learn/expat-xml-parser/',
122 => 'https://www.bitdegree.org/learn/php-xml-parser/',
123 => 'https://www.bitdegree.org/learn/php-xml/',
124 => 'https://www.bitdegree.org/learn/php-parse-xml/',
125 => 'https://www.bitdegree.org/learn/php-array-functions/',
126 => 'https://www.bitdegree.org/learn/php-date-function/',
127 => 'https://www.bitdegree.org/learn/php-mail/',
128 => 'https://www.bitdegree.org/learn/php-explode-function/',
129 => 'https://www.bitdegree.org/learn/php-substr-function/',
130 => 'https://www.bitdegree.org/learn/php-str_replace/',
131 => 'https://www.bitdegree.org/learn/php-json_decode/',
132 => 'https://www.bitdegree.org/learn/php-array-push/',
133 => 'https://www.bitdegree.org/learn/php-array-length/',
134 => '#sidebar-menu-toggle',
135 => 'https://www.bitdegree.org/learn/category/php-cheat-sheet/',
136 => '#PHP_5_libxml_Functions_Main_Tips',
137 => '#PHP_libxml_Functions',
138 => '#PHP_5_libxml_Prefefined_Constants',
139 => 'http://xmlsoft.org',
140 => 'https://www.bitdegree.org/register',
141 => 'https://www.bitdegree.org/courses',
142 => 'https://www.bitdegree.org/tag/gamified',
143 => 'https://www.bitdegree.org/learn/',
144 => 'https://www.bitdegree.org/tutorials/',
145 => 'https://www.bitdegree.org/hiring',
146 => 'https://www.bitdegree.org/bitdegree-vision.pdf',
147 => 'https://blog.bitdegree.org/',
148 => 'https://www.bitdegree.org/partners',
149 => 'https://www.bitdegree.org/policies',
150 => 'https://www.bitdegree.org/privacy-policy',
151 => 'https://www.bitdegree.org/cookie-policy',
152 => 'https://www.bitdegree.org/terms-of-service',
153 => 'https://www.bitdegree.org/learn/best-code-editor/',
154 => 'https://www.bitdegree.org',
155 => 'https://www.bitdegree.org/learn/php-mail-function/',
156 => '#',
157 => 'https://www.bitdegree.org/cookie-policy',
)