PHP 替换字符串中img标签样式 preg_match_all str_replace

function repalceTA($str){
    preg_match_all("/<img(.*)(src="[^"]+")[^>]+>/isU", $str, $arr);
    for($i=0,$j=count($arr[0]); $i<$j; $i++){
        $str = str_replace($arr[0][$i],"<img " .$arr[2][$i]." />",$str);
    }
    return $str;
}

function isEmail(email) {
    return /^((([a-z]|d|[!#$%&'*+-/=?^_`{|}~]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])+(.([a-z]|d|[!#$%&'*+-/=?^_`{|}~]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])+)*)|((x22)((((x20|x09)*(x0dx0a))?(x20|x09)+)?(([x01-x08x0bx0cx0e-x1fx7f]|x21|[x23-x5b]|[x5d-x7e]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])|(\([x01-x09x0bx0cx0d-x7f]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF]))))*(((x20|x09)*(x0dx0a))?(x20|x09)+)?(x22)))@((([a-z]|d|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])|(([a-z]|d|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])([a-z]|d|-|.|_|~|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])*([a-z]|d|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF]))).)+(([a-z]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])|(([a-z]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])([a-z]|d|-|.|_|~|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])*([a-z]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])))$/i.test(email);
}

或

function validateEmail(elementValue)
{   
var emailPattern = /^[a-zA-Z0-9._]+[a-zA-Z0-9]+@[a-zA-Z0-9]+.[a-zA-Z]{2,4}$/;   
return emailPattern.test(elementValue);
}

function checkEmail(mail) {   
return /^[w-]+(.[w-]+)*@([a-z0-9-]+(.[a-z0-9-]+)*?.[a-z]{2,6}|(d{1,3}.){3}d{1,3})(:d{4})?$/.test(mail);
}

 
if (isEmail('youremail@yourdomain.com')){ console.log(' www.111cn.net This is email is valid'); }View Code 

$a='/([w._]{2,10})@(w{1,}).([a-z]{2,4})/';
$b='1412424545645454545454545k@qq.com';

if(preg_match($a,$b)){
 echo "电子邮件合法";
}else{
 echo "电子邮件不合法啊";
}

$newhtml=preg_replace("/(r?n)\1+/","\1",$newhtml)；

echo preg_replace('/($s*$)|(^s*^)/m', '', $str); 完美解决:victory:

$a = 'gdgdga

gagda
faf

fefe

fefe';

echo preg_replace('/(r?n)\1+/',"nn",$a);

function DeleteHtml($str)
{
$str = str_replace("<br/>","",$str);
$str = str_replace("\t","",$str);
$str = str_replace("\r\n","",$str);
$str = str_replace("\r","",$str);
$str = str_replace("\n","",$str);
return trim($str);
}

$a="test,admin,abc";

$b="te";

$exist=preg_match("/b{$b}b/",$a);

if($exist)

{

echo "存在";

}else

{
echo "不存在";
}

<?php

$a = "abcdefgabcdefaaag";

preg_match('|abc([a-z]+)g|isu',$a,$out1);

preg_match_all('|abc([s]+)g|isu',$a,$out2);

echo "<pre>";

print_r($out1);

print_r($out2);

echo "</pre>";

?>

<?php

preg_match_all("/href="(.*)"/isu",$contents,$out);

preg_match_all('|href="(.*)"|isu',$contents,$out);

?>

<?php

 
$ext = 'jpg|jpeg|gif|bmp|png';//罗列图片后缀从而实现多扩展名匹配
$str = '<p><img title="湛蓝天空" alt="湛蓝天空" onload="ResizeImage(this,860)" src="http://你的域名/uploads/allimg/131121/1-1311210925190-L.jpg" /></p><p><img title="湛蓝天空" alt="湛蓝天空" onload="ResizeImage(this,860)" src="http://你的域名/uploads/allimg/130814/1-130Q42211190-L.jpg" /></p><p><img title="湛蓝天空" alt="湛蓝天空" onload="ResizeImage(this,860)" src="http://你的域名/uploads/allimg/130923/1-130923233I30-L.jpg" /></p>';
 
 
$img_list = array(); //这里存放结果map
$img_list = img_match($str,$ext);
print_r($img_list); //查看结果变量
 
/*
* $str，要进行处理的内容
* $ext，要匹配的扩展名
*/
 
function img_match($str,$ext){
 
$list = array(); //这里存放结果map
$c1 = preg_match_all('/<imgs.*?>/', $str, $m1); //先取出所有img标签文本
for($i=0; $i<$c1; $i++) {    //对所有的img标签进行取属性
$c2 = preg_match_all('/(w+)s*=s*(?:(?:(["'])(.*?)(?=2))|([^/s]*))/', $m1[0][$i], $m2); //匹配出所有的属性
for($j=0; $j<$c2; $j++) { //将匹配完的结果进行结构重组
$list[$i][$m2[1][$j]] = !empty($m2[4][$j]) ? $m2[4][$j] : $m2[3][$j];
}
}
 
return $list;
}
 
?>

$str = preg_match_all('/(original-title=).*?(>)/is', $str,$array);