php正则表达式总结2

最新推荐文章于 2024-07-31 08:54:47 发布
最新推荐文章于 2024-07-31 08:54:47 发布
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分类专栏： 正则表达式 php
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
本文链接：https://blog.youkuaiyun.com/wsxiaoqiaoliushui/article/details/22288379
版权

$str = file_get_contents("F:\\route_mq_log.txt");//返回的是字符串
//$str_array ='[0] => 47';
print_r($str);
echo "\n";
//第二种分析方法
//preg_match_all('/\[0\]=>[0-9]{1,3}/', strval($str_array),$match);

preg_match_all('/\[0] => [0-9]{1,3}/', strval($str),$match);

上面的\(转义字符只需要一个就可以了)

print_r($match);

###################################################

$str_array = file("F:\\route_mq_log.txt");//返回的是数组
//$str_array ='[0] => 47';
print_r($str_array);
echo "\n";
//第一种分析方法
$n_array =array();
foreach ($str_array as $key=>$value){
if ($key==3||$key%8==3) {
$str = str_replace("[0] =>", '', $value);
$n_array[]=$str;
//echo $str."\n";
}
}
sort($n_array,SORT_NUMERIC);
//print_r($n_array);
for($i=0;$i<count($n_array);$i++){
$cmp_value = $n_array[$i]-$n_array[$i-1];
//echo $cmp_value."\n";
if ($cmp_value!=1) {
echo $n_array[$i-1]."\n";
}
}


F:\\route_mq_log.txt的内容是：




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)




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)




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)




Array
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)




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)




Array
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)




Array
(
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)




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)




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)




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)




Array
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)




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)




Array
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)




Array
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)




Array
(
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    [2] => 2014-03-26 00:02:36
)




Array
(
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)




Array
(
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)




Array
(
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)




Array
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)




Array
(
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    [2] => 2014-03-26 00:02:52
)




Array
(
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    [2] => 2014-03-26 00:02:57
)




Array
(
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)




Array
(
    [0] => 138
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)




Array
(
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)




Array
(
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    [1] => 2014-03-26 00:02:02
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)




Array
(
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)




Array
(
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)




Array
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)




Array
(
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)




Array
(
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)




Array
(
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)




Array
(
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)




Array
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)




Array
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)




Array
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)




Array
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)




Array
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)




Array
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)




Array
(
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)




Array
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)




Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
(
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)




Array
(
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Array
(
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Array
(
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Array
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Array
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Array
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Array
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)




Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
(
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Array
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Array
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Array
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Array
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Array
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Array
(
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Array
(
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Array
(
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)




Array
(
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)




Array
(
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)




Array
(
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)




Array
(
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)




Array
(
    [0] => 243
    [1] => 2014-03-26 00:04:06
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)




Array
(
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Array
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Array
(
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Array
(
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Array
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Array
(
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Array
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Array
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Array
(
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)




Array
(
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Array
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Array
(
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Array
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Array
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Array
(
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Array
(
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Array
(
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Array
(
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Array
(
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Array
(
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Array
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Array
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Array
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Array
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Array
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Array
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Array
(
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Array
(
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Array
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Array
(
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Array
(
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
(
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Array
(
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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Array
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精通正则表达式（第三版）简体中文版
03-12
- **Perl兼容正则表达式(PCRE)**：Perl语言的正则表达式实现，被广泛应用于PHP、Python等多种编程语言中。 - **Java中的正则表达式**：Java提供了java.util.regex包来支持正则表达式的使用。 - **JavaScript中的正则...
php正则表达式的基本语法总结
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你可以看见如果你没有用我们提到的两个字符（最后一个例子），就是说 模式（正则表达式） 可以出现在被检验字符串的任何地方，你没有把他锁定到两边 这里还有几个字符 ‘*’, ‘+’,和 ‘?’, 他们用来表示一个字符...
PHP正则表达式函数学习
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由此可见，preg_replace 替换会把每一个数组中的元素都进行一次匹配替换，无论有没有匹配成功，返回值中的元素都会保留，而preg_filter 只会保留匹配成功的元素；正则表达式是在日常开发中经常用到的，通常一些使用频率过高的正则表达式都是直接粘贴复制，对于基础正则的使用还是要铭记于心的，今天抽时间整理一些php正则表达式的用法。由此可见，{} 花括号和 [] 方括号都是正则表达式的特殊符号，通过preg_quote 函数进行转译后多了\,因此进行正则匹配的时候会忽略该特殊符号；
php正则表达式 结尾,php正则表达式的基本语法总结
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首先，让我们看看两个特别的字符：'^' 和 ‘$' 他们是分别用来匹配字符串的开始和结束，一下分别举例说明"^The": 匹配以 "The"开头的字符串;"of despair$": 匹配以 "of despair" 结尾的字符串;"^abc$": 匹配以abc开头和以abc结尾的字符串，实际上是只有abc与之匹配"notice": 匹配包含notice的字符串你可以看见如果你没有用我们提到的两个...
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正则表达式，又称规则表达式，是一种文本模式，通常用来检索、替换和控制文本。主要包括a 到 z 的字母以及一些特殊的元字符。 正则表达式的应用范围非常之广泛，最初是由Unix普及开来的，后来在广泛运用于Scala 、PHP、C# 、Java、C 、Objective-c、Perl 、Swift、VBScript 、Javascript、Ruby 以及Python等等。 1. 什么是正则表达式 正则表达式是一种特殊的字符串模式，用于匹配一组字符串，就好比用模具做产品，而正则就是这个模具，定义一种规则去匹
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例如：正则表达式00\d可以匹配"007",“008”，它不能匹配"00A",“0077”，因为\d仅限单个数字字符。匹配常用符我们使用\w匹配一个字母、数字或下划线。例如：正则表达式java\w可以匹配"javac",“java9”,“java_”，它不能匹配"java#",“java”，因为\w不能匹配#，空格等字符。匹配空格字符我们使用\s来匹配一个空格字符，注意空格字符不但包括空格，还包括tab字符。例如：正则表达式a\sc可以匹配a c，但是不能匹配"ac",“abc”。
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PHP 正则表达式总结1.PHP中两个常用的正则函数a.preg_match 正则函数，以perl语言为基础语法：preg_match( mode,string subject,array matches)说明：mode参数---- 正则的模块，也就是正则表达式(语法)subject参数---- 正则的内容matches参数---- 正则的结果(获得一个数组的形式)b.ereg 正则函数，以POS...
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如何使用PHP进行正则表达式匹配？
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通过上述方法，可以灵活地在PHP中使用正则表达式进行各种文本匹配操作。无论是基础的字符匹配还是复杂的模式匹配，PHP都提供了丰富的函数和选项来满足不同的需求.
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php正则表达式的基本语法总结[:xdigit:]：匹配任何16进制数字另外下面这些特殊字符在转义符号"/"转义后代表的含义如下：s：匹配单个的空格符S：用于匹配除单个空格符之外的所有字符。d：用于匹配从0到9的数字，相当于"/[0-9]/"。w：用于匹配字母，数字或下划线字符，相当于"/[a-zA-Z0-9_]/"。W：用于匹配所有与w不匹配的字符，相当于"/[^a-zA-Z0-9_]/"。D：...
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请关注新浪微博"开心大冒险_往前冲冲冲"
02-24 3944
String log = ""; BASE64Decoder decoder = new BASE64Decoder(); try { log = new String(decoder.decodeBuffer(log)); System.out.println(log); } catch (IOException e) { // TODO Auto-generated catch b
php正则表达式总结
请关注新浪微博"开心大冒险_往前冲冲冲"
02-24 1114
php echo 'wj'; echo ''; $file = '移动150卡--> 广西省南宁市'; //$pattern = '/[\x{4e00}-\x{9fa5}]+/u'; $pattern = '/移动150卡-->.+广西省南宁市/is'; if(preg_match($pattern,$file,$pg)){ print_r($pg); } ?> $msg = preg_
精通正则表达式（第3版）读书笔记（一）
请关注新浪微博"开心大冒险_往前冲冲冲"
02-23 969
php正则表达式匹配3
请关注新浪微博"开心大冒险_往前冲冲冲"
04-06 878
$str = file_get_contents("F:\\4_1_step1_temp.txt"); print_r($str); //preg_match_all("/\"order_id\":[0-9]{3,}/", $str,$match); //preg_match_all("/^\[user_num\].*$/m", $str,$match); //preg_match_all
PHP正则表达式基础语法深度解析
资源摘要信息:"php正则表达式的基本语法总结共11页.pdf.zip" 在信息技术领域中，正则表达式是一种强大的文本处理工具，广泛应用于编程、数据处理和文本分析中。正则表达式允许用户定义匹配字符串的模式，并在文本中...
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