mt_rand() the function used to generate the random number in PHP.
Syntax
<?php
mt_rand(min,max);
min: Optional. Specifies the lowest number to return. Default is 0.
max: Optional. Specifies the highest number to return. Max is 2147483647.
Example 1:
<?php
$random_number=mt_rand();
echo $random_number;
Example 2:
<?php
$random_number=mt_rand(100000,9999999);
echo $random_number;
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