如何 捕获提交事件,在提交前对客户输入的内容检查处理.不合法则阻止提交 如何 捕获提交事件,在提交前对客户输入的内容检查处理.不合法则阻止提交?刚学PHP,有很多问题不明白,请高手指教. 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 用JS来做吧,简单点的,比如验证是否为空啊等等!验证注册:可以用AJAX做,动态的验证这里还有我从网上下载的常用函数:这是一些使用频率比较高的函数......1.产生随机字符串函数function random($length) { $hash = @#@#; $chars = @#ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz@#; $max = strlen($chars) - 1; mt_srand((double)microtime() * 1000000); for($i = 0; $i < $length; $i++) { $hash .= $chars[mt_rand(0, $max)]; } return $hash;}2.截取一定长度的字符串注:该函数对GB2312使用有效function wordscut($string, $length ,$sss=0) { if(strlen($string) > $length) { if($sss){ $length=$length - 3; $addstr=@# ...@#; } for($i = 0; $i < $length; $i++) { if(ord($string[$i]) > 127) { $wordscut .= $string[$i].$string[$i + 1]; $i++; } else { $wordscut .= $string[$i]; } } return $wordscut.$addstr; } return $string;}3.取得客户端IP地址function GetIP(){ if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown")) $ip = getenv("HTTP_CLIENT_IP"); else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown")) $ip = getenv("HTTP_X_FORWARDED_FOR"); else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown")) $ip = getenv("REMOTE_ADDR"); else if (isset($_SERVER[@#REMOTE_ADDR@#]) && $_SERVER[@#REMOTE_ADDR@#] && strcasecmp($_SERVER[@#REMOTE_ADDR@#], "unknown")) $ip = $_SERVER[@#REMOTE_ADDR@#]; else $ip = "unknown"; return($ip);}4.创建相应的文件夹function createdir($dir=@#@#){ if (!is_dir($dir)) { $temp = explode(@#/@#,$dir); $cur_dir = @#@#; for($i=0;$i<count($temp);$i++) { $cur_dir .= $temp[$i].@#/@#; if (!is_dir($cur_dir)) { @mkdir($cur_dir,0777); } } }}5.判断邮箱地址function checkEmail($inAddress){ return (ereg("^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+",$inAddress));}6.跳转function gotourl($message=@#@#,$url=@#@#,$title=@#@#){ $html ="<html><head>"; if(!empty($url)) $html .="<meta http-equiv=@#refresh@# content=\"3;url=@#".$url."@#\">"; $html .="<link href=@#../templates/style.css@# type=text/css rel=stylesheet>"; $html .="</head><body><br><br><br><br>"; $html .="<table cellspacing=@#0@# cellpadding=@#0@# border=@#1@# width=@#450@# align=@#center@#>"; $html .="<tr><td bgcolor=@##ffffff@#>"; $html .="<table border=@#1@# cellspacing=@#1@# cellpadding=@#4@# width=@#100%@#>"; $html .="<tr class=@#m_title@#>"; $html .="<td>".$title."</td></tr>"; $html .="<tr class=@#line_1@#><td align=@#center@# height=@#60@#>"; $html .="<br>".$message."<br><br>"; if (!empty($url)) $html .="系统将在3秒后返回<br>如果您的浏览器不能自动返回,请点击[<a href=".$url." target=_self>这里</a>]进入"; else $html .="[<a href=@##@# onclick=@#history.go(-1)@#>返回</a>]"; $html .="</td></tr></table></td></tr></table>"; $html .="</body></html>"; echo $html; exit;}7.分页(两个函数配合使用)function getpage($sql,$page_size=20) { global $page,$totalpage,$sums; //out param $page = $_GET["page"]; //$eachpage = $page_size; $pagesql = strstr($sql," from "); $pagesql = "select count(*) as ids ".$pagesql; $result = mysql_query($pagesql); if($rs = mysql_fetch_array($result)) $sums = $rs[0]; $totalpage = ceil($sums/$page_size); if((!$page)||($page<1)) $page=1; $startpos = ($page-1)*$page_size; $sql .=" limit $startpos,$page_size "; return $sql; }function showbar($string=""){ global $page,$totalpage; $out="共<font ".$totalpage."color=@#red@#><b>".$totalpage."</b></font>页 "; $linkNum =4; $start = ($page-round($linkNum/2))>0 ? ($page-round($linkNum/2)) : "1"; $end = ($page+round($linkNum/2))<$totalpage ? ($page+round($linkNum/2)) : $totalpage; $prestart=$start-1; $nextend=$end+1; if($page<>1) $out .= "<a href=@#?page=1&&".$string."@#title=第一页>第一页</a> "; if($start>1) $out.="<a href=@#?page=".$prestart."@# title=上一页>..<<</a> "; for($t=$start;$t<=$end;$t++) { $out .= ($page==$t) ? "<font [".$t."]color=@#red@#><b>[".$t."]</b></font> " : "<a $thref=@#?page=$t&&".$string."@#>$t</a> "; } if($end<$totalpage) $out.="<a href=@#?page=".$nextend."&&".$string."@# title=下一页>>>..</a>"; if($page<>$totalpage) $out .= " <a href=@#?page=".$totalpage."&&".$string."@# title=最后页>最后页</a>"; return $out;}8.获取新插入数据的ID<?mysql_insert_id();?> onsubmit="return chform();";你还要怎么捕捉提交事件啊?不用表单那么用??来提交什么?? 求个正则 请问,进销存系统的数据如何自动更新的电子商务的网站上?请给一个思路也有分! 求一解决方案,关于url地址的问题 有没杭州的PHP程序员做兼职,完成几个网站常用功能,价格自报。 一款基于PHP的HTTP服务器 wamperserver设置vhost问题 能设置2个 域名 来访问2个不同的文件夹么? 请教矩阵的问题! 关于libtool -PHP-QQ会员群 如何实现CSDN这样回答问题的效果? 求高手推荐适合新手学习的优秀php整站源码 怎样获取表结构
验证注册:可以用AJAX做,动态的验证
这里还有我从网上下载的常用函数:
这是一些使用频率比较高的函数......1.产生随机字符串函数function random($length) {
$hash = @#@#;
$chars = @#ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz@#;
$max = strlen($chars) - 1;
mt_srand((double)microtime() * 1000000);
for($i = 0; $i < $length; $i++) {
$hash .= $chars[mt_rand(0, $max)];
}
return $hash;
}2.截取一定长度的字符串注:该函数对GB2312使用有效function wordscut($string, $length ,$sss=0) {
if(strlen($string) > $length) {
if($sss){
$length=$length - 3;
$addstr=@# ...@#;
}
for($i = 0; $i < $length; $i++) {
if(ord($string[$i]) > 127) {
$wordscut .= $string[$i].$string[$i + 1];
$i++;
} else {
$wordscut .= $string[$i];
}
}
return $wordscut.$addstr;
}
return $string;
}3.取得客户端IP地址function GetIP(){
if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown"))
$ip = getenv("HTTP_CLIENT_IP");
else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown"))
$ip = getenv("HTTP_X_FORWARDED_FOR");
else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown"))
$ip = getenv("REMOTE_ADDR");
else if (isset($_SERVER[@#REMOTE_ADDR@#]) && $_SERVER[@#REMOTE_ADDR@#] && strcasecmp($_SERVER[@#REMOTE_ADDR@#], "unknown"))
$ip = $_SERVER[@#REMOTE_ADDR@#];
else
$ip = "unknown";
return($ip);
}4.创建相应的文件夹function createdir($dir=@#@#)
{
if (!is_dir($dir))
{
$temp = explode(@#/@#,$dir);
$cur_dir = @#@#;
for($i=0;$i<count($temp);$i++)
{
$cur_dir .= $temp[$i].@#/@#;
if (!is_dir($cur_dir))
{
@mkdir($cur_dir,0777);
}
}
}
}5.判断邮箱地址function checkEmail($inAddress)
{
return (ereg("^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+",$inAddress));
}6.跳转function gotourl($message=@#@#,$url=@#@#,$title=@#@#)
{
$html ="<html><head>";
if(!empty($url))
$html .="<meta http-equiv=@#refresh@# content=\"3;url=@#".$url."@#\">";
$html .="<link href=@#../templates/style.css@# type=text/css rel=stylesheet>";
$html .="</head><body><br><br><br><br>";
$html .="<table cellspacing=@#0@# cellpadding=@#0@# border=@#1@# width=@#450@# align=@#center@#>";
$html .="<tr><td bgcolor=@##ffffff@#>";
$html .="<table border=@#1@# cellspacing=@#1@# cellpadding=@#4@# width=@#100%@#>";
$html .="<tr class=@#m_title@#>";
$html .="<td>".$title."</td></tr>";
$html .="<tr class=@#line_1@#><td align=@#center@# height=@#60@#>";
$html .="<br>".$message."<br><br>";
if (!empty($url))
$html .="系统将在3秒后返回<br>如果您的浏览器不能自动返回,请点击[<a href=".$url." target=_self>这里</a>]进入";
else
$html .="[<a href=@##@# onclick=@#history.go(-1)@#>返回</a>]";
$html .="</td></tr></table></td></tr></table>";
$html .="</body></html>";
echo $html;
exit;
}7.分页(两个函数配合使用)function getpage($sql,$page_size=20)
{
global $page,$totalpage,$sums; //out param
$page = $_GET["page"];
//$eachpage = $page_size;
$pagesql = strstr($sql," from ");
$pagesql = "select count(*) as ids ".$pagesql;
$result = mysql_query($pagesql);
if($rs = mysql_fetch_array($result)) $sums = $rs[0];
$totalpage = ceil($sums/$page_size);
if((!$page)||($page<1)) $page=1;
$startpos = ($page-1)*$page_size;
$sql .=" limit $startpos,$page_size ";
return $sql;
}
function showbar($string="")
{
global $page,$totalpage;
$out="共<font ".$totalpage."color=@#red@#><b>".$totalpage."</b></font>页 ";
$linkNum =4;
$start = ($page-round($linkNum/2))>0 ? ($page-round($linkNum/2)) : "1";
$end = ($page+round($linkNum/2))<$totalpage ? ($page+round($linkNum/2)) : $totalpage;
$prestart=$start-1;
$nextend=$end+1;
if($page<>1)
$out .= "<a href=@#?page=1&&".$string."@#title=第一页>第一页</a> ";
if($start>1)
$out.="<a href=@#?page=".$prestart."@# title=上一页>..<<</a> ";
for($t=$start;$t<=$end;$t++)
{
$out .= ($page==$t) ? "<font [".$t."]color=@#red@#><b>[".$t."]</b></font> " : "<a $thref=@#?page=$t&&".$string."@#>$t</a> ";
}
if($end<$totalpage)
$out.="<a href=@#?page=".$nextend."&&".$string."@# title=下一页>>>..</a>";
if($page<>$totalpage)
$out .= " <a href=@#?page=".$totalpage."&&".$string."@# title=最后页>最后页</a>";
return $out;
}8.获取新插入数据的ID<?
mysql_insert_id();
?>
你还要怎么捕捉提交事件啊?不用表单那么用??来提交什么??