there are four rows of data
1111111
2222222
3333333
4444444
I"m going to randomly pick any row and assign it to a variable. How does php implement
?
there are four rows of data
1111111
2222222
3333333
4444444
I"m going to randomly pick any row and assign it to a variable. How does php implement
? doesn't know where your four rows of data are stored. Random number generation is generated using rand or mt_rand .
$dataArr = [
1111111,
2222222,
3333333,
4444444,
];
$random = $dataArr[array_rand($dataArr)]; $random is one of the data obtained at random.
turn it into an array:
$arr = [
1111111,
222222,
3333333,
4444444
];
then use count ($arr) to calculate the length, and then use $key = rand (0, count ($arr)-1) to randomly go to a key,$arr [$key] that is the
complete:
$arr = [
111111,
222222,
3333333,
4444444
];
$key = rand (0, count ($arr)-1)
$arr [$key]
there is another way:
scramble the array with shuffle (), and then take the first one.
$data = [1111111,2222222,3333333,4444444];
$max = count($data) - 1;
$rand = $data[rand(0,$max)];$data=file_get_contents("test.txt");
$data_url=explode("\r\n",$data);
$data_url[1] got it
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