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Porobrema Com Rand() No Mysql



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to de volta.. bom.. conseguir resolver o problema do RAND()... to usando o código assim agora:

$buscatotal = mysql_query("SELECT * FROM $tab_walls");
$total = mysql_num_rows($buscatotal);
if($total>0) {

function make_seed() {
list($usec, $sec) = explode(' ', microtime());
return (float) $sec + ((float) $usec * 100000);
$randval = rand();

for ($i = 0; $i < $nwalls; $i++) {

$wall[$i] = mt_rand(1,$total);
$id_busca = $wall[$i];
$buscawall = mysql_query("SELECT * FROM $tab_walls WHERE id='$id_busca'") or die("ERRO AO SELECIONAR");

    $colunas = "2";
    if (($i%$colunas)==0) {
        echo "</tr>";
        echo "<tr>";
    $dados = mysql_fetch_array($buscawall);
    $id = $dados["id"];
    $thumb = $dados["thumb"];
    echo "<td width=50% align=center><a href='javascript:;' Onclick=\"javascript:abre('walls.php?ID=$id','640','480','0')\"><img border=0 src='$thumb' width=120 height=90></a></td>";

echo "</table>
} else {
    echo "Nenhum registro encontrado";

dessa veiz postei o código completo.. heheeh.... bom.... ele tá randomizando certinho.. porém tem vez que ele repete o mesmo wall.. fika duas vezes o mesmo... isso tem como corrigir?

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