砍敺 IT_man 2015-7-2 19:36 蝺刻摩 ; J8 J; R, T4 E! s+ C, e$ g# y
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1.剖偏//閬脣 slash詨
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4 D0 x& y0 Z2 F3.雿輻典啗歲怠 敹雿輻 \^
( |8 B4 {. v* Z! E& ~preg_match("/(甇閬璇隞嗅銝)/","(甈脤霅摮銝)")嚗憒甈脤霅摮銝脩泵甇閬璇隞嗅銝莎1(true)嚗銋0(false)error return false.- |' q( Y# Q, U! C, w6 O5 Z6 U
銝憭批撖怎sensitive
7 J+ v! H- x7 x/ p. o- |eregi('^hello', 'HELLO');
; C- B; z. c: ~) G9 ~preg_match('/^hello/i', 'HELLO');. ?- U' N0 u4 H' A, T/ V' B4 Z8 |# Q
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1. 閬頝唾怠寞蝚西
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& w$ I" e; I1 ^% Y& Y憒雿輻典 甇閬銵券撘蝚西 隢雿輻刻歲怠 eg. \^7 n% D6 A+ h: ^4 }7 y8 R$ I
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2 s: [$ z3 z" I典 | 隤芣蝭靘 | 瘥撠銝蝡銋摮銝 | /a/ | 怠瘥 a" 摮銝莎靘憒 ab", bac", cba" | xyz" | /a./ | 怠瘥 a" 隞亙嗅隞颱摮摮銝莎靘憒 ab", bac"嚗亥瘥撠.嚗隢雿輻 \.嚗 | a", ba" | /^xy/ | 隞 xy" 憪摮銝莎靘憒 xyz", xyab"嚗亥瘥撠 ^嚗隢雿輻 \^嚗 | axy", bxy" | /xy$/ | 隞 xy" 蝯撠曄摮銝莎靘憒 axy", abxy"隞 xy" 蝯撠曄摮銝莎靘憒 axy", abxy" 嚗亥瘥撠 $嚗隢雿輻 \$嚗 | xya", xyb" | [13579] | 1 3 5 7 9 摮銝莎靘憒嚗"a3b", 1xy" | y2k" | [0-9] | 急詨銋摮銝 | 銝急詨銋摮銝 | [a-z0-9] | 急詨撠撖怠瘥銋摮銝 | 銝急詨撠撖怠瘥銋摮銝 | [a-zA-Z0-9] | 急詨摮瘥銋摮銝 | 銝急詨摮瘥銋摮銝 | b[aeiou]t | bat", bet", bit", bot", but" | bxt", bzt" | [^0-9] | 銝急詨銋摮銝莎亥瘥撠 ^嚗隢雿輻 \^嚗 | 急詨銋摮銝 | [^aeiouAEIOU] | 銝急喃摮銝莎亥瘥撠 ^嚗隢雿輻 \^嚗 | 急喃摮銝 | [^\^] | 銝 ^" 銋摮銝莎靘憒 xyz", abc" | xy^", a^bc" |
摮 | 隤芣 | 蝪∪桃靘 | \ | 輸寞摮 | /A\*/ 舐冽潭撠 A*"嚗嗡葉 * 臭寞摮嚗粹輸嗥寞蝢抬隞亙銝 \" | ^ | 瘥撠頛詨亙憪雿蝵 | /^A/ 舀撠 Abcd" 銝剔 A"嚗雿銝舀撠 aAb" | $ | 瘥撠頛詨亙蝯雿蝵 | /A$/ 舀撠 bcdA" 銝剔 A"嚗雿銝舀撠 aAb" | * | 瘥撠銝摮嗆活游甈 | /bo*/ 舀撠 Good boook" 銝剔 booo"嚗鈭血舀撠 Good bk" 銝剔 b" | + | 瘥撠銝摮銝甈⊥游甈∴蝑 {1,} | /a+/ 舀撠 caaandy" 銝剔 aaa"嚗雿銝舀撠 cndy" | ? | 瘥撠銝摮嗆活銝甈 | /e?l/ 舀撠 angel" 銝剔 el"嚗銋臭誑瘥撠 angle" 銝剔 l" | . | 瘥撠隞颱銝摮嚗雿銵蝚西銝蝞嚗 | /.n/ 舀撠 nay, an apple is on the tree" 銝剔 an" on"嚗雿銝舀撠 nay" | (x) | 瘥撠 x 銝血蝚血典摮乩霈 | /(a*) and (b*)/ 舀撠 aaa and bb" 銝剔 aaa" bb"嚗銝血拙瘥撠敺啁摮銝脰身摰唾 RegExp.$1 RegExp.$2 | xy | 瘥撠 x y | /a*b*/g 舀撠 aaa and bb" 銝剔 aaa" bb" | {n} | 瘥撠銝摮 n 甈∴n 箔甇湔 | /a{3}/ 舀撠 lllaaalaa" 嗡葉 aaa"嚗雿銝舀撠 aa" | {n,} | 瘥撠銝摮喳 n 甈∴n 箔甇湔 | /a{3,}/ 舀撠 aa aaa aaaa" 嗡葉 aaa" aaaa"嚗雿銝舀撠 aa" | {n,m} | 瘥撠銝摮喳 n 甈∴喳 m 甈∴mn 箸迤湔 | /a{3,4}/ 舀撠 aa aaa aaaa aaaaa" 嗡葉 aaa" aaaa"嚗雿銝舀撠 aa" aaaaa" | [xyz] | 瘥撠銝剜砍憫抒隞颱摮 | /[ecm]/ 舀撠 welcome" 銝剔 e" c" m" | [^xyz] | 瘥撠銝其葉砍憫批箇曄隞颱摮 | /[^ecm]/ 舀撠 welcome" 銝剔 w""l""o"嚗航箏嗉 [xyz] 賜詨嚗隢摮訾瘜冽 /^/ [^] 銋賜銝嚗 | [\b] | 瘥撠雿摮嚗Backspace character嚗 | 臭誑瘥撠銝 backspace 嚗銋隢瘜冽 [\b] \b 銋撌桀 | \b | 瘥撠望摮嚗靘憒蝛箸 | 靘憒 /\bn\w/ 臭誑瘥撠 noonday" 銝剔 no ;
1 ^6 Z1 T1 m) O/\wy\b/ 舀撠 possibly yesterday." 銝剔 ly | \B | 瘥撠望摮 | 靘憒, /\w\Bn/ 臭誑瘥撠 noonday" 銝剔 on ,' L8 P( ^" M" x5 U' C- M0 ~
血 /y\B\w/ 臭誑瘥撠 possibly yesterday." 銝剔 ye | \cX | 瘥撠批嗅嚗Control character嚗嚗嗡葉 X 臭批嗅 | /\cM/ 臭誑瘥撠銝摮銝脖葉 control-M | \d | 瘥撠隞颱詨嚗蝑 [0-9] | /[\d]/ 舀撠 0 9 隞颱詨雿園憒摮瘥蝑撠曹舀撠 | \D | 瘥撠隞颱詨嚗蝑 [^0-9] | /[\D]/ 舀撠 w" a" 雿銝舀撠憒 7 1 蝑詨 | \f | 瘥撠 form-feed | 交臬冽摮銝剜潛 " 銵箏臭誑瘥撠 | \n | 瘥撠銵蝚西 | 交臬冽摮銝剜潛 銵" 銵箏臭誑瘥撠 | \r | 瘥撠 carriage return | | \s | 瘥撠隞颱蝛箇賢嚗White space character嚗嚗蝑 [ \f\n\r\t\v] | /\s\w*/ 舀撠 A b" 銝剔 b" | \S | 瘥撠隞颱蝛箇賢嚗蝑 [^ \f\n\r\t\v] | /\S/\w* 舀撠 A b" 銝剔 A" | \t | 瘥撠摰雿摮嚗Tab嚗 | | \v | 瘥撠游雿摮嚗Vertical tab嚗 | | \w | 瘥撠詨摮瘥摮嚗Alphanumerical characters嚗摨蝺摮瘥嚗"_"嚗嚗蝑 [A-Za-z0-9_] | /\w/ 舀撠 .A _!9 銝剔 A""_""9喋 | \W | 瘥撠詨摮瘥摮摨蝺摮瘥嚗蝑 [^A-Za-z0-9_] | /\W/ 舀撠 .A _!9 銝剔 ."" "!"嚗航嗅質 /\w/ 啣末詨 | \ooctal | 瘥撠恍脖嚗嗡葉octal臬恍脖貊 | /\oocetal123/ 舀撠恍脖ASCII銝 123 詨摮潦 | \xhex | 瘥撠剝脖嚗嗡葉hex臬剝脖貊 | /\xhex38/ 舀撠 16脖ASCII銝 38 詨摮 | 1 e5 m g' J9 u9 W& H
靘:
' {- _$ V& S) H7 f$ d& u0 ^5 q"http://videomega.tv/view.php?ref=057070073072049056055072068049049068072055056049072073070057&" "057070073072049056055072068049049068072055056049072073070057" 銝脫詨 ====>- $LINK_PAGE="http://videomega.tv/view.php?ref=057070073072049056055072068049049068072055056049072073070057&";+ p/ b/ a9 N' S% E
- preg_match('/http\:\/\/videomega\.tv\/view\.php\?ref=(\d+)&/i', $LINK_PAGE, $tmp_matches);
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$tmp_matches[0] = "http://videomega.tv/view.php?ref=057070073072049056055072068049049068072055056049072073070057&"
) S: C d0 z' ]$tmp_matches[1] = "057070073072049056055072068049049068072055056049072073070057"6 }6 B: \) I' g W: a! P
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