We can randomly collect one or more element from an array by using
array_rand() function in PHP. We can specify the number of random elements
required by specifying an optional parameter in side the function.
$value=
array("Rabin","Reid","Cris","KVJ","John");
$rand_keys=array_rand($value,2);
echo "First random element = ".$value[$rand_keys[0]];
echo "<br>Second
random element = ".$value[$rand_keys[1]];
We can create a six digit random number generator which will give us only characters.
srand ((double) microtime() * 10000000);
$input = array ("A", "B", "C", "D", "E","F","G","H","I","J","K","L","M","N","O","P","Q",
"R","S","T","U","V","W","X","Y","Z");
$rand_index = array_rand($input,6);
print $input[$rand_index[3]];
print $input[$rand_index[5]];
print $input[$rand_index[4]];
print $input[$rand_index[2]];
print $input[$rand_index[1]];
print $input[$rand_index[0]];
By using above code we can generate 6 digit random number of only characters. You can read how to generate random numbers here.
Read here how to generate random password string having alphabets and digits
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