<?php
$db_host = "localhost";
$db_user = "";
$db_pass = "";
$db_name = "";
$db_tabl = "";

mysql_connect($db_host,$db_user,$db_pass);
mysql_select_db($database) or die( "Unable to select database");

$alphanum = 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","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","0","1","2","3","4","5","6","7","8","9");

for ($i = 1; $i =< 100; $i++) {
	$this_str = "";
	$choices = array_rand($alphanum,15);
	for ($j = 0; $j < 15; $j++) { $this_str = $this_str.$alphanum[$choices[$j]]; }
	mysql_query("INSERT INTO ".$db_tabl." VALUES ('".$this_str."')");
}

mysql_close();