php eregi正则获取两字符中间内容

<?php

$fcontents ="fdsafdafdsa{page}中国要呀{/page}dafdsafdsafdsafdsa{page}你好中国{/page}fdsafdsafsda{page}我爱中国{/page}fdafdsa";
if(eregi("{page}(.*){/page}", $fcontents,$regs)){
 //echo "成功";
//print_r($regs);
 echo $regs[1];
}
else{
 echo "失败";
}

exit;
?>

$pattern='/php/';
$str='111cn.net';
echo preg_match($pattern,$str);

$pattern='/p$/';
$strArray=array('asp','php','jsp','python','ruby');
print_r(preg_grep($pattern,$strArray));

<?php
 
//preg_match("正则表达式","字符串")用于在字符串中查找匹配项
 
$email = "987044391@qq.com";
if (preg_match("/^([a-zA-Z0-9])+([.a-zA-Z0-9_-])*@([.a-zA-Z0-9_-])+([.a-zA-Z0-9_-]+)+([.a-zA-Z0-9_-])$/",$email)){
 echo '匹配成功<hr />';
}else {
 echo '匹配失败<hr />';
}
 
//preg_quote("字符串") 在每个有正则表达式语法前面加入一个转义字符即＼
 
$str = "php点点通是一个学习php的网站，(⊙o⊙)…";
echo preg_quote($str);
echo "<hr />";
 
//preg_split("正则","字符串")分割字符串
$php = "+php++点点通++++是好网站";
$field = preg_split("/＼+{1,}/",$php);
foreach($field as $f){
 echo $f." ";
}
echo "<hr />";
//preg_grep("正则","字符串") 与数组匹配后返回新数组
$phpddt = array("php点点通","php100","呵呵","hahaha","phpchina");
$item = preg_grep("/^php/",$phpddt);
print_r($item);
 
echo "<hr />";
//preg_replace("正则","替换内容","原字符串")    很重要，很常用
$a = "欢迎光临http://www.111cn.net/";  //给http开头的加上超链接
echo preg_replace("/http:＼/＼/(.*)＼//","<a href=＼"＼${0}＼">＼${0}</a>","$a");
 
?>

$pattern='/php[1-5]/';
$str='php1php2php3php4php5php6php7php8';

echo preg_replace($pattern,'PHP',$str);

$pattern='/[＼.@]/';
$str='feng.yingyuan@sina.com.cn';

print_r(preg_split($pattern,$str));

输出结果：
Array
(
 [0] => feng
 [1] => yingyuan
 [2] => sina
 [3] => com
 [4] => cn
)

<?php
$username = $_SERVER['REMOTE_USER'];
$filename = $_GET['file'];
//对文件名进行过滤，以保证系统安全
if (!ereg('^[^./][^/]*$', $userfile))
{
die('这不是一个非法的文件名！');
}
//对用户名进行过滤
if (!ereg('^[^./][^/]*$', $username))
{
die('这不是一个无效的用户名');
}
//通过安全过滤，拼合文件路径
$thefile = "/home/$username/$filename";
?>

<?php
//字符串
$string = "Name: {Name}<br>/nEmail: {Email}<br>/nAddress: {Address}<br>/n";
//模式
$patterns =array(
"/{Address}/",
"/{Name}/",
"/{Email}/"
);
//替换字串
$replacements = array (
"No.5, Wilson St., New York, U.S.A",
"Thomas Ching",
"tom@emailaddress.com",
);
//输出模式替换结果
print preg_replace($patterns, $replacements, $string);
?>

<script[^>]*?>.*?</script>'si", // 去掉 javascript

preg_replace('/<script.*?<＼/script>/m', '', $html);

preg_replace('/<script.*?<＼/script>/ms', '', $html);

<?php
$options = array("indent" => true,      
     "indent-spaces" => "4",  
     "wrap" => 4096);       
$tidy = tidy_parse_file("/edit-table.html", $options);//此处改成你要处理的文档URL
tidy_clean_repair($tidy);
echo $tidy;
?>

加入composer.json

{
    "require": {
        ...,
        "markwilson/VerbalExpressionsPhp": "dev-master"
    }
}

<?php
 
// 相当于 (＼w+)(?:＼w+)(?:＼w+)(＼w+)
$verbalExpression->word()
                 ->disableSubPatternCapture()
                 ->word()
                 ->word()
                 ->enableSubPatternCapture()
                 ->word();

$preg = "/<[img|IMG].*?src=[\'|\"](.*?(?:[\.gif|\.jpg]))[\'|\"].*?[\/]?>/i";

preg_match_all($preg,$str,$res);

$str='<p style="padding: 0px; margin-top: 0px; margin-bottom: 0px; line-height: 200%;"><img border="0" src="upfiles/2009/07/1246430143_4.jpg" alt=""/></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 0px; line-height: 200%;"><img border="0" src="upfiles/2009/07/1246430143_3.jpg" alt=""/></p><p style="padding: 0px; margin-top: 0px; margin-bottom: 0px; line-height: 200%;"><img border="0" src="upfiles/2009/07/1246430143_1.jpg" alt=""/></p>';
 
$pattern="/<[img|IMG].*?src=[\'|\"](.*?(?:[\.gif|\.jpg]))[\'|\"].*?[\/]?>/";
 
preg_match_all($pattern,$str,$match);
 
print_r($match);

/**
* 提取字符串中图片url地址
* @param type $str
* @return type
*/
function getimgs($str) {
    $reg = '/((http|https):\/\/)+(\w+\.)+(\w+)[\w\/\.\-]*(jpg|gif|png)/';
    $matches = array();
    preg_match_all($reg, $str, $matches);
    foreach ($matches[0] as $value) {
        $data[] = get_file($value);
    }
    return $data;
}