You can refer to the code of php randomly extracting some elements from the array.
The code is as follows
| 代码如下 |
复制代码 |
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class getValues {
public function inputValue($inputArray) {
$this->inputArray = $inputArray;
}
public function getValue($number) {
$this->number = $number;
for($i = 0; $i < $this->number; $i ++) {
$index = rand ( 0, count ( $this->inputArray ) - 1 - $i );
$getArray [$i] = $this->inputArray [$index];
unset ( $this->inputArray [$index] );
for($k = $index; $k < count ( $this->inputArray ) - 1; $k ++) {
$this->inputArray [$k] = $this->inputArray [$k + 1];
}
}
//asort ( $getArray ); // 从小到大排序，根据需要修改
return $getArray;
}
}
//测试代码
$keywords = array(
"我们",
"你们",
"他们"
);
$getValue=new getValues();
$getValue->inputValue($keywords);
$key = $getValue->getValue(1);//从数组中随机抽取一个元素
？>
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Copy code |
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class getValues {
Public function inputValue($inputArray) {
$this->inputArray = $inputArray;
}
Public function getValue($number) {
$this->number = $number;
for($i = 0; $i < $this->number; $i ++) {
$index = rand ( 0, count ( $this->inputArray ) - 1 - $i );
$getArray [$i] = $this->inputArray [$index];
unset ( $this->inputArray [$index] );
for($k = $index; $k < count ( $this->inputArray ) - 1; $k ++) {
$this->inputArray [$k] = $this->inputArray [$k + 1];
}
}
//asort ($getArray); // Sort from small to large, modify as needed
return $getArray;
}
}
//Test code
$keywords = array(
"We",
"You",
"They"
);
$getValue=new getValues();
$getValue->inputValue($keywords);
$key = $getValue->getValue(1);//Randomly extract an element from the array
? >
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