-
Notifications
You must be signed in to change notification settings - Fork 0
/
PhpArray_ac_ap.php
281 lines (225 loc) · 9.34 KB
/
PhpArray_ac_ap.php
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
<?php
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
echo "array_change_key_case — 将数组中的所有键名修改为全大写或小写:"."\n";
$array=array("First"=>12,"SECOND"=>22,"three"=>32);
echo var_dump(array_change_key_case($array,CASE_UPPER)),"\n";
print_r(array_change_key_case($array,CASE_LOWER));
echo "\n\n";
echo "array_chunk — 将一个数组分割成多个(得到的数组是一个多维数组中的单元):"."\n";
$array=array("First","Second","Three");
$array1 = array("First" => 12, "SECOND" => 22, "three" => 32);
print_r(array_chunk($array, 2));
print_r(array_chunk($array, 2,TRUE));
echo "\n\n";
echo "array_column — 返回数组中指定的一列:"."\n";
$array = array("First", "Second", "Three");
$array1 = array("First" => 12, "SECOND" => 22, "three" => 32);
print_r(array_column($array1, $array));
echo "array_column — 返回数组中指定的一列:"."\n";
$records = array(
array(
'id' => 2135,
'first_name' => 'John',
'last_name' => 'Doe',
),
array(
'id' => 3245,
'first_name' => 'Sally',
'last_name' => 'Smith',
),
array(
'id' => 5342,
'first_name' => 'Jane',
'last_name' => 'Jones',
),
array(
'id' => 5623,
'first_name' => 'Peter',
'last_name' => 'Doe',
)
);
print_r(array_column($records, "last_name","id"));
echo "array_combine — 创建一个数组，用一个数组的值作为其键名，另一个数组的值作为其值 :"."\n";
$a = array('green', 'red', 'yellow');
$b = array('avocado', 'apple', 'banana');
print_r(array_combine($a, $b));
echo "array_count_values — 统计数组中所有的值:"."\n";
$b = array('avocado', 'apple', 'banana');
print_r(array_count_values($array));
echo "array_diff_assoc — 带索引检查计算数组的差集(键值都比较):"."\n";
$a = array('green', 'red', 'yellow');
$b = array('green', 'apple', 'banana');
print_r(array_diff_assoc($a, $b));
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "green", "yellow", "red");
$result = array_diff_assoc($array1, $array2);
print_r($result);
echo "array_diff_key — 使用键名比较计算数组的差集:"."\n";
$a = array('green', 'red', 'yellow');
$b = array("2"=>'green', 'apple', 'banana');
print_r(array_diff_key($a, $b));
$array = array("First", "Second", "Three");
$array1 = array("First" => 12, "SECOND" => 22, "three" => 32);
print_r(array_diff_key($array, $array1));
echo "array_diff_uassoc — 用用户提供的回调函数做索引检查来计算数组的差集:"."\n";
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "green", "yellow", "red");
function key_compare_func($a,$b){
if($a===$b){
return 0;
}
return ($a>$b)?1:-1;
}
print_r(array_diff_uassoc($array1, $array2, "key_compare_func"));
echo "array_diff_ukey — 用回调函数对键名比较计算数组的差集:"."\n";
$array1 = array('blue' => 1, 'red' => 2, 'green' => 3, 'purple' => 4);
$array2 = array('green' => 5, 'blue' => 6, 'yellow' => 7, 'cyan' => 8);
echo var_dump(array_diff_ukey($array1, $array2, 'key_compare_func')),"\n\n";//函数key_compare_func在85行定义
echo "array_diff — 计算数组的差集:"."\n";
$array1=array("a"=>"green","red","blue","red");
$array2=array("b"=>"green","yellow","red");
print_r(array_diff($array1, $array2));
echo "array_fill_keys — 使用指定的键和值填充数组:"."\n";
$keys=array("foo",5,6,"bar");
print_r(array_fill_keys($keys, "banana"));
echo "array_fill — 用给定的值填充数组:"."\n";
print_r(array_fill(1, 5, "bike"));
print_r(array_fill(-1, 8, "bike"));
echo "array_filter — 用回调函数过滤数组中的单元 :"."\n";
function old($var){
return ($var&1);
}
function even($var){
return(!($var&1));
}
function hold($var){
return TRUE;
}
$array1=array("a"=>1,"b"=>2,"c"=>3,"d"=>4,"e"=>5);
$array2=array(6,7,8,9,10,11,12);
print_r(array_filter($array1,"old"));
print_r(array_filter($array2,"even"));
print_r(array_filter($array1,"hold"));
print_r(array_filter($array2,"hold"));
$entry = array(
0 => 'foo',
1 => false,
2 => -1,
3 => null,
4 => '',
5=>3
);
print_r(array_filter($entry));
$arr = ['a' => 1, 'b' => 2, 'c' => 3, 'd' => 4];
echo var_dump(array_filter($arr,function($key){
return $key=="a";
},ARRAY_FILTER_USE_KEY));
echo var_dump(array_filter($arr, function($value,$key) {//这两个参数的顺序有要求的
return $key == "c"||$value==2;
}, ARRAY_FILTER_USE_BOTH));
echo "array_flip — 交换数组中的键和值:"."\n";
$input = array("oranges", "apples", "pears");
$input2 = array("oranges", "apples", "pears","pears");
print_r(array_flip($input));
print_r(array_flip($input2));
echo "array_intersect_assoc — 带索引检查计算数组的交集(键名/值都比较):"."\n";
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "green", "b" => "yellow", "blue", "red");
print_r(array_intersect_assoc($array1, $array2));
echo "array_intersect_key — 使用键名比较计算数组的交集(键名比较):"."\n";//返回的值只是 array1 中的
$array1 = array('blue' => 1, 'red' => 2, 'green' => 3, 'purple' => 4);
$array2 = array('green' => 5, 'blue' => 6, 'yellow' => 7, 'cyan' => 8);
print_r(array_intersect_key($array1, $array2));
echo "array_intersect_uassoc — 带索引检查计算数组的交集，用回调函数比较索引:"."\n";
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "GREEN", "B" => "brown", "yellow", "red");
print_r(array_intersect_uassoc($array1, $array2, "strcasecmp"));//strcasecmp???
echo "array_intersect_ukey — 用回调函数比较键名来计算数组的交集:"."\n";//返回的值只是 array1 中的
$array1 = array('blue' => 1, 'red' => 2, 'green' => 3, 'purple' => 4);
$array2 = array('green' => 5, 'blue' => 6, 'yellow' => 7, 'cyan' => 8);
print_r(array_intersect_ukey($array1, $array2,"key_compare_func"));//key_compare_func在85行定义
echo "array_intersect — 计算数组的交集:"."\n";//返回的键名只是 array1 中的
$array1 = array("a" => "green", "red", "blue");
$array2 = array("b" => "green", "yellow", "red");
print_r(array_intersect($array1, $array2));
echo "array_key_exists — 检查数组里是否有指定的键名或索引:"."\n";
$array2 = array('green' => 5, 'blue' => 6, 'yellow' => 7, 'cyan' => 8);
echo var_dump(array_key_exists("cyan", $array2));
echo var_dump(array_key_exists("a", $array2));
$search_array = array('first' => null, 'second' => 4);
// returns false
echo var_dump(isset($search_array['first']));
// returns true
echo var_dump(array_key_exists('first', $search_array))."\n";
echo "array_keys — 返回数组中部分的或所有的键名:"."\n";
$array2 = array('green' => 5, 'blue' => 6, 'yellow' => 7, 'cyan' => 8);
print_r(array_keys($array2));
print_r(array_keys($array2,"6"));
$array = array("color" => array("blue", "red", "green"),
"size" => array("small", "medium", "large"));
print_r(array_keys($array));
echo "array_map — 为数组的每个元素应用回调函数 :"."\n";
function cude($n){
return ($n*$n*$n);
}
$a=array(1,2,3,4,5);
print_r(array_map("cude", $a));
//是用匿名函数
print_r(array_map(function($n){
return $n*2;
}, range(1, 5)));
//是用更多的数组
function show_spanish($n,$m){
return ("This number $n is called $m in Spanish");
}
function map_spanish($n,$m){
return (array($n=>$m));
}
$a = array(1, 2, 3, 4, 5);
$b = array("uno", "dos", "tres", "cuatro", "cinco");
print_r(array_map("show_spanish", $a,$b));
print_r(array_map("map_spanish", $a,$b));
echo "array_merge_recursive — 递归地合并一个或多个数组"."\n";//??????????
$ar1 = array("color" => array("favorite" => "red"), 5);
$ar2 = array(10, "color" => array("favorite" => "green", "blue"));
print_r(array_merge_recursive($ar1, $ar2));
echo "array_merge — 合并一个或多个数组:"."\n";
$array1 = array("color" => "red", 2, 4);
$array2 = array("a", "b", "color" => "green", "shape" => "trapezoid", 4);
$array3=array(1,2,3,4,5);
$array4=array(6,7,8,9,90);
print_r(array_merge($array1,$array2));
print_r(array_merge($array3,$array4));
echo "array_multisort — 对多个数组或多维数组进行排序:"."\n";//????????????????
$ar1 = array(10, 100, 100, 0);
$ar2 = array(1, 3, 2, 4);
array_multisort($ar1, $ar2);
echo var_dump($ar1);
echo var_dump($ar2);
echo "array_pad — 以指定长度将一个值填充进数组 :"."\n";
$input=array(12,10,5);
print_r(array_pad($input, 5, "abc"));
print_r(array_pad($input, -5, "abc"));
print_r(array_pad($input, 3, "abc"));
print_r(array_pad($input, 2, "abc"));
print_r(array_pad($input, -2, "abc"));
echo "array_pop — 弹出数组最后一个单元（出栈）"."\n";
$input=array(12,34,2135,12,24,53,);
echo array_pop($input),"\n";
print_r($input);
echo "array_product — 计算数组中所有值的乘积:"."\n";
$array=array(2,3,4,5);
$array1=array();
$array2=array("ag","ag");
echo array_product($array),"\n";
echo array_product($array1),"\n";//空数组返回1
echo array_product($array2),"\n";//返回0
echo "array_push — 将一个或多个单元压入数组的末尾（入栈）:"."\n";
$input=array(1,2,3,4,5,6);
array_push($input, "a","b",2,"g",4);
print_r($input);
?>