Three ways to generate random numbers in PHP

Three ways to generate random numbers in PHP

How do I generate a random number between 1-10 in PHP?

Example 1, use the shuffle function to generate a random number.


<?php
$arr =range (1,10);
Shuffle ($arr);
foreach ($arr as $values)
{
echo $values. " ";
}
?>

Example 2, use the Array_unique function to generate a random number.


<?php
$arr =array ();
while (count ($arr) <10)
{
$arr []=rand (1,10);
$arr =array_unique ($arr);
}
echo Implode ("", $arr);
?>

Example 3, using the Array_flip function to generate random numbers, you can remove duplicate values.


<?php
$arr =array ();
$count 1=0;
$count = 0;
$return = Array ();
while ($count < 10)
{
$return [] = Mt_rand (1, 10);
$return = Array_flip (Array_flip ($return));
$count = count ($return);
}//www.jb51.net
foreach ($return as $value)
{
echo $value. " ";
}
echo "<br/>";
$arr =array_values ($return);//Get the value of the array
foreach ($arr as $key)
echo $key. " ";
?>

PHP Random number Generation Function Example
?

<?php
function RANDPW ($len =8, $format = ' all ') {
$is _ABC = $is _numer = 0;
$password = $tmp = ";
Switch ($format) {
Case ' all ':
$chars = ' ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789 ';
Break
Case ' CHAR ':
$chars = ' abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz ';
Break
Case ' number ':
$chars = ' 0123456789 ';
Break
Default:
$chars = ' ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789 ';
Break
}//Www.jb51.net
Mt_srand (Double) Microtime () *1000000*getmypid ());
while (strlen ($password) < $len) {
$tmp =substr ($chars, (Mt_rand ()%strlen ($chars)), 1);
if (($is _numer <> 1 && is_numeric ($tmp) && $tmp > 0) | | $format = = ' CHAR ') {
$is _numer = 1;
}
if ($is _abc <> 1 && preg_match ('/[a-za-z]/', $tmp)) | | $format = = ' number ') {
$is _abc = 1;
}
$password. = $tmp;
}
if ($is _numer <> 1 | | $is _abc <> 1 | | empty ($password)) {
$password = RANDPW ($len, $format);
}
return $password;
}
for ($i = 0; $i < $i + +) {
Echo RANDPW (8, ' number ');
echo "<br>";
}

Three ways to generate random numbers in PHP