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<input name="zjtxt" type="text" size="50" maxlength="100">
<input name="buttom" type="submit" value="Ìá½»">
</form>
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<?php
//µÚÒ»²½:³õʼ»¯ÖÖ×Ó
$seedarray =microtime();
$seedstr =split(" ",$seedarray,5);
$seed =$seedstr[0]*10000;

//µÚ¶þ²½:ʹÓÃÖÖ×Ó³õʼ»¯Ëæ»úÊý·¢ÉúÆ÷
srand($seed);

//µÚÈý²½:Éú³ÉÖ¸¶¨·¶Î§ÄÚµÄËæ»úÊý
$random =rand(0,100); 
$zj=$_POST[zjtxt]
if($zj == $random)
{
  echo "i i i";
}
else{
  echo "aaa";
}
?>

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