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正則表達(dá)式中的特殊字符

: 1. .: 匹配任意單個(gè)字符(除了換行符) 2. *: 匹配前面元字符0次或者多次 3. +: 匹配前面元字符1次或者多次 4. ?: 匹配前面元字符0次或者1次 5. ^: 匹配字符串的開始 6. $: 匹配字符串的結(jié)束 7. (): 匹配括號(hào)內(nèi)的表達(dá)式，也表示一個(gè)組 8. |: 表示或者的關(guān)系 9. \: 用于轉(zhuǎn)義字符 10. []: 用于指定一組字符中的某一個(gè)

Public @ 2023-02-24 02:36:15

訪問我的網(wǎng)站時(shí)殺毒軟件報(bào)警提示中了病毒怎么辦？

如果您的殺毒軟件提示您的網(wǎng)站中存在病毒，您應(yīng)該立即采取以下措施： 1. 掃描您的電腦，確保您的電腦沒有受到病毒感染或惡意軟件攻擊。 2. 如果您發(fā)現(xiàn)自己的網(wǎng)站確實(shí)中了病毒，立即停止訪問該網(wǎng)站并聯(lián)系您的網(wǎng)站管理員或托管服務(wù)提供商。 3. 如果您是網(wǎng)站管理員，應(yīng)立即清理網(wǎng)站，移除惡意文件，修復(fù)漏洞并更新軟件版本，以確保您的網(wǎng)站不再存在任何安全問題。 4. 您還可以提交您的網(wǎng)站到著名的安全性驗(yàn)證

Public @ 2023-05-29 02:00:13

短視頻時(shí)代，中小企業(yè)還有沒有必要做官方網(wǎng)站建設(shè)?

日常工作中，經(jīng)常會(huì)碰到有客戶問這個(gè)問題：現(xiàn)在都是玩短視頻的，網(wǎng)站還有必要建嗎?答案是肯定的!只要搜索引擎不死，只要百度沒有倒閉，那么網(wǎng)站就是一個(gè)企業(yè)最基礎(chǔ)的營(yíng)銷工具。很多企業(yè)主和老板其實(shí)也懂這個(gè)道理，但是大部分人的心理是，“我只要大概有個(gè)網(wǎng)站就行了，裝裝門面，別人有的我也有就夠了”。。。諸如此類。。。很少有老板會(huì)把網(wǎng)站作為一個(gè)企業(yè)主要的推廣手段，特別對(duì)于傳統(tǒng)行業(yè)來(lái)說(shuō)，比如機(jī)械設(shè)備生產(chǎn)類、原材料加工

Public @ 2021-07-06 15:46:59

正則表達(dá)式中的特殊字符

字符/意義：對(duì)于字符，通常表示按字面意義，指出接著的字符為特殊字符，不作解釋。例如：/b/匹配字符’b’,通過(guò)在b 前面加一個(gè)反斜杠，也就是/b/，則該字符變成特殊字符，表示匹配一個(gè)單詞的分界線?；蛘撸簩?duì)于幾個(gè)字符，通常說(shuō)明是特殊的，指出緊接著的字符不是特殊的，而應(yīng)該按字面解釋。例如：*是一個(gè)特殊字符，匹配任意個(gè)字符(包括0個(gè)字符)；例如：/a*/意味匹配0個(gè)或多個(gè)a。為了匹配字面上的*，在a前面

Public @ 2010-02-14 16:14:32

經(jīng)典正則表達(dá)式

（1）驗(yàn)證郵箱： ^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$ （2）驗(yàn)證身份證： ^\d{15}|\d{18}$ （3）驗(yàn)證電話號(hào)碼： ^0\d{2,3}-\d{5,9}$

Public @ 2023-03-02 12:48:07

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基本文件流程錯(cuò)誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.022308s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016069s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 5589 LIMIT 1 [ RunTime:0.015311s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.015108s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by times desc limit 100 [ RunTime:0.015871s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.015494s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 5589 LIMIT 1 [ RunTime:0.015474s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] update `ob_article` set views=views+1 where id=5589 [ RunTime:0.015622s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海網(wǎng)站建設(shè)' AND `status` <> -1 LIMIT 1 [ RunTime:0.022523s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海網(wǎng)站建設(shè)' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.046636s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海正則表達(dá)式' AND `status` <> -1 LIMIT 1 [ RunTime:0.021643s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海正則表達(dá)式' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.043381s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

0.460256s

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正則表達(dá)式中的特殊字符

訪問我的網(wǎng)站時(shí)殺毒軟件報(bào)警提示中了病毒怎么辦？

短視頻時(shí)代，中小企業(yè)還有沒有必要做官方網(wǎng)站建設(shè)?

正則表達(dá)式中的特殊字符

經(jīng)典正則表達(dá)式

更多您感興趣的搜索

Categories

Tags

正則表達(dá)式中的特殊字符

訪問我的網(wǎng)站時(shí)殺毒軟件報(bào)警提示中了病毒怎么辦？

短視頻時(shí)代，中小企業(yè)還有沒有必要做官方網(wǎng)站建設(shè)?

正則表達(dá)式中的特殊字符

經(jīng)典正則表達(dá)式

更多您感興趣的搜索

訪問我的網(wǎng)站時(shí)殺毒軟件報(bào)警提示中了病毒怎么辦？