用PHP和ACCESS写聊天室（十）
时间:2007-12-23 来源:不详 作者:迈克DB
代码如下：
<?php
function suiji($max)
{
srand((double)microtime()*1000000);
$x=rand();
$y=getrandmax();
$r=$x/$y*($max-1);
$r=round($r );
return $r;
}
function StrOccurs($sStr, $sFind){
$sTemp=$sStr;
$iLen=strlen($sFind);
$iCount=0;
while (true){
if (strstr($sTemp, $sFind))
break;
else
$sTemp = instr($sTemp,strpos($sTemp,$sFind) $iLen);
$iCount ;
}
}
return $iCount;
}
function StrDupl($sStr, $iCnt){
$ret="";
for($i=1;$i<=$iCnt;$i )
$ret.=$sStr;
return $ret;
}
function DelQuot($sStr){
织梦好，好织梦
$s=str_replace(chr(124),"¦",$sStr);
$s=str_replace(chr(39),"´",$s);
$s=str_replace(chr(34),""",$s);
return s;
}
function DelTag($sStr){
$bNeed="False";
$sOther=strtoupper($sStr);
if ($bNeed!="True" || !strstr($sOther,"<TABLE")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"</TABLE")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"<SCRIPT")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"</SCRIPT")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"<BODY")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"</BODY")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"<HTML")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"</HTML")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"<HEAD")) $bNeed="True";
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if ($bNeed!="True" || !strstr($sOther,"</HEAD")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"<FORM")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"</FORM")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"<INPUT")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"</INPUT")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"<OPTION")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"</OPTION")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"<SELECT")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"</SELECT")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"<APPLET")) $bNeed="True";
if ($bNeed!="True" || !strstr($sOther,"</APPLET")) $bNeed="True";
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