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Perl/CGI


¡¤ÓÃÕýÔò±í´ïʽ¶ÔÎļþ½øÐвÙ×÷ 2004-05-25
Ò»µ©ÄãÓиö°üº¬ÁËÕû¸ö´®µÄ±äÁ¿£¬Äã¿ÉÒÔʹÓÃÕýÔò±í´ïʽ£¬¶ÔÕû¸öÎļþ½øÐвÙ×÷£¬ ¶ø²»ÊǶÔÎļþÖеÄij¸ö¿é½øÐвÙ×÷¡£ÓÐÁ½¸öÓÐÓõÄÕýÔò±í´ïʽ±ê¼Ç/sºÍ/m¡£Ò»°ã£¬PerlµÄ ÕýÔò±í´ïʽ¶ÔÐнøÐд¦Àí£¬Äã¿ÉÒÔÕâÑùд£º undef $/; = ; if ( =~ /(b.*grass)$/) { print "found $1 "; } Èç¹û°ÑÎÒÃǵÄÎļþÌîÈëÈçÏÂÄÚÈÝ£º browngrass bluegrass ÔòÊä³öΪ£º foun ..
 
¡¤PerlµÄ¾­µäÓ÷¨:¶ÁÈë¶ÎÂä 2004-05-25
$/ =""µÄд·¨ÊÇÓÃÀ´Ö¸Ê¾Perl¶ÁÈë¶ÎÂäµÄ£¬¶ÎÂäÊÇÓÉÁ½¸ö»òÁ½¸öÒÔÉ쵀 »»Ðзû¹¹³ÉµÄÎı¾¿é¡£ÕⲻͬÓÚÉèÖÃΪ" "£¬ºóÕß½ö¶ÁÈëÓÉÁ½ÐÐ×é³ÉµÄÎı¾¿é¡£ ÔÚÕâÖÖÇé¿öÏ£¬½«³öÏÖÕâÑùÒ»¸öÎÊÌ⣺Èç¹ûÓÐÁ¬ÐøµÄ¿ÕÐдæÔÚ£¬ÀýÈç¡°text ¡±£¬ Äã¼È¿ÉÒÔ°ÑËü½âÊÍΪһ¸ö¶ÎÂä ("text")£¬Ò²¿ÉÒÔ½âÊÍΪÁ½¸ö¶ÎÂä ("text", ºóÃæ ¸úÁ½¸ö»»Ðзû£¬ÒÔ¼°Ò»¸ö¿Õ¶ÎÂ䣬ºóÃæ¸úÁ½¸ö¿ÕÐС£) ÔÚ¶ÁÈëÎı¾Ê±£¬µÚ¶þ¸ö½ ..
 
¡¤PerlµÄ¾­µäÓ÷¨:¶ÁÈë¶à¸ö¼Ç¼ 2004-05-25
Èç¹ûÄãµ÷Ó㬷µ»ØÎļþÖÐÊ£ÓàµÄ¼Ç¼¡£Èç¹ûÄã´¦ÓÚÎļþ⣬Ôò·µ»Ø¿Õ±í£º @records = ; if (@records) { print "There were ", scalar(@records), " records read. "; } ÔÚÏÂÃæµÄÒ»²½ÖУ¬½øÐи³ÖµºÍ²âÊÔÁ½Ï×÷£º if (@records = ) { print "There were ", scalar(@records), " records read. "; } chomp() Ò²¿ÉÊÊÓöÔÊý×é²Ù×÷£º @records = ; chomp ..
 
¡¤PerlµÄ¾­µäÓ÷¨:¶ÁÈëµ¥¸ö¼Ç¼ 2004-05-25
ÓÐÒ»¸öÈÝÒ׵ķ½·¨¶ÁÈëfilehandles£ºÓà ²Ù×÷·û¡£ÔÚ±êÁ¿ÄÚÈÝÏ£¬ Ëü·µ»ØÎļþÖеÄÏÂÒ»¸ö¼Ç¼£¬»òÕß·µ»ØÎ´¶¨Òå³ö´íÐÅÏ¢¡£ÎÒÃÇ¿ÉÒÔʹÓÃËüÀ´°ÑÒ»ÐжÁ Èëµ½Ò»¸ö±äÁ¿ÖУº = ; die "Unexpected end-of-file" unless defined ; ÔÚÑ­»·Óï¾äÖУ¬ÎÒÃÇ¿ÉÒÔÕâÑùд£º while (defined ( = )) { # long-winded # is set to each record in the file, one at a tim ..
 
¡¤ÓÃSysopen()½øÐиü¶àµÄ¿ØÖÆ 2004-05-25
ΪÁ˸üºÃµÄ¿ØÖÆÎļþµÄ´ò¿ª·½Ê½£¬¿ÉÒÔʹÓà sysopen() º¯Êý£º use Fcntl; sysopen(FH, , O_RDWR|O_CREAT, 0666) or die "Can't open for reading/writing/creating : $!"; º¯Êý sysopen() ´øÓÐËĸö²ÎÊý£¬µÚÒ»¸öÊÇͬopen()º¯ÊýÀàËÆµÄÎļþ¾ä±ú²ÎÊý£¬ µÚ¶þ¸ö²ÎÊýÊDz»´øÄ£Ê½ÐÅÏ¢µÄÎļþÃû£¬µÚÈý¸ö²ÎÊýÊÇģʽ²ÎÊý£¬ÓÉFcntl Ä£¿éÌṩ µÄÂß¼­ORÔËËã×éºÏÆðÀ´µÄ³£Ê ..
 
¡¤PerlµÄ¾­µäÓ÷¨:ÓÃOpen()º¯Êý´ò¿ªÎļþ 2004-05-25
´ò¿ªÎļþµÄ³£Ó÷½·¨ÊÇ: open(FH, "< ") or die "Couldn't open for reading: $!"; open() º¯Êýͨ³£´øÓÐÁ½¸ö²ÎÊý£¬µÚÒ»¸öΪÎļþ¾ä±ú£¬ÓÃÓÚÖ¸Ïò´ò¿ªµÄÎļþ£¬ µÚ¶þ¸ö²ÎÊýÊÇÎļþÃû¼°Ä£Ê½(ÎļþµÄ´ò¿ªÄ£Ê½)µÄ»ìºÏÌ壬Èç¹ûÎļþ±»³É¹¦´ò¿ª£¬ open()º¯Êý·µ»Øtrue£¬·ñÔòΪfalse¡£ÎÒÃÇÓá°or¡±À´²âÊÔ¸ÃÌõ¼þ¡£ ÉÏÊö´úÂëÖеÄģʽÓÉСÓÚ×Ö·û( ") or die ..
 
¡¤ÏìӦͷ204µÄÓ¦Óà2004-05-25
ÏÈ¿´Ò»¸ö³£¼ûµÄCGIÊä³öµÄÀý×Ó£º #!/usr/bin/perl print"Content-type:text/html "; print""; print"xyz"; print""; µ±ÎÒÃÇÔÚÌá½»Ò»·Ý±íµ¥°´ÏÂÌá½»µÄ°´Å¥Ê±£¬Í¨³£¶¼»áÇл»µ½Ò»¸öеÄÒ³Ãæ¡£ËùÒÔÒªÏëÌá½»ºó ±£ÁôÔÚÔ­ÓÐÒ³ÃæµÄÄÚÈݵϰ£¬¹ßÓõķ½·¨ÊÇÖØÐÂÁ¬½Ó»Ø¸Õ²ÅÌá½»µÄURL£¬µ«ÊÇÓÐʱÇл»Ò³Ãæ ÐèÒª±£´æÒ»Ð©ÖмäµÄÊý¾Ý£¬Îª±àд´úÂë´øÀ´ºÜ¶àÂé·³£¬¶øÇÒΪWEB·þÎñÆ÷´øÀ´²»ÉÙ¸º ..
 
¡¤ÓÃPerlÓïÑÔ½øÐÐSocket±à³Ì 2004-05-25
ÍøÂç±à³ÌÊÇÒ»ÃÅÉñÃØÇÒ¸´ÔÓµÄÒÕÊõ£¬µ±È»Ò²Ê®·ÖÓÐȤ¡£PerlÓïÑÔÌṩÁ˷ḻµÄTCP/IPÍøÂ纯Êý£¬ËùÓÐÕâЩº¯Êý¶¼ Ö±½ÓÀ´Ô´ÓÚCÓïÑÔµÄsocket¿âº¯Êý. ÓÉÓÚPerlÓïÑÔºÍCÓïÑÔµÄsocket¿âº¯ÊýÔÚÐÍʽºÍʹÓ÷½·¨É϶¼ÊÇÒ»ÑùµÄ£¬Òò´Ë»áʹÓÃPerlÓïÑÔ½øÐÐSocket±à³Ì, µ± ȻҲ¾Í»áʹÓÃCÓïÑÔ½øÐÐSocket±à³Ì. ÏÂÃæÊÇPerlÓïÑÔÖÐÓйصÄsocket¿âº¯ÊýÁÐ±í£º º¯ÊýÔ­ÐÍ Ê¹ÓÃ˵Ã÷ accept(NEWSOCKET,GENER ..
 
¡¤Perl DBI ÈëÃÅ 2004-05-25
±¾ÎÄÊÇÒÔ Perl DBI Examples ΪÀ¶±¾£¬ÅäºÏ DBMaker ºÃѧÒ×ÓõÄÌØÐÔ£¬ÒÔ¼°¼¸¸ödzÏÔÒ×¶®µÄÀý×Ó£¬Ï£ÍûÄܹ»Ò»²½²½µØ´øÁìʹÓÃÕßѧϰ Perl DBI modules ´æÈ¡ DBMaker ×ÊÁÏ¿âµÄ·½·¨¡£¶øÔ­×÷Õß׫дÖ÷ÒªÔ­¶¯Á¦ÊÇÏ£Íû½åÓÉÕâÆªÎÄÕµÄÎÊÊÀ£¬ÒÔ½µµÍ DBI mailing list ÖÐÒ»ÔÙÖØ³öÏÖµÄ FAQ¡£ ¶ÁÍê±¾ÎÄÖ®áᣬÎÒÃǾÍÄÜѧµ½ÀûÓà DBI ½¨Á¢Ò»¸öÍ걸µÄ×ÊÁÏ¿â³Ìʽ¡£ ÒÔϾÍÏÈÓÉ DBI µÄ»ù±¾¹¦ÄÜ¿ªÊ¼£¬È»ááÔÙÖ ..
 
¡¤¸÷ÖÖÆ½Ì¨ÏÂPerlÄ£¿éµÄ°²×°·½·¨ 2004-05-25
Perlµ½Á˵ÚÎå°æÔö¼ÓÁËÄ£¿éµÄ¸ÅÄÓÃÀ´Ìá¹©ÃæÏò¶ÔÏó±à³ÌµÄÄÜÁ¦¡£ÕâÊÇPerlÓïÑÔ·¢Õ¹Ê·ÉÏ µÄÒ»¸öÀï³Ì±®¡£´Ëºó£¬¹ã´ó×ÔÓÉÈí¼þ°®ºÃÕß¿ª·¢ÁË´óÁ¿¹¦ÄÜÇ¿´ó¡¢¹¹Ë¼¾«ÇɵÄPerlÄ£¿é£¬¼«´óµØ À©Õ¹ÁËPerlÓïÑԵŦÄÜ¡£CPAN£¨ComprehensivePerlArchiveNetwork£©ÊÇinternetÉÏPerlÄ£¿é ×î´óµÄ¼¯É¢µØ£¬°üº¬ÁËÏÖ½ñ¹«²¼µÄ¼¸ºõËùÓеÄperlÄ£¿é¡£ ¼¸¸öÖ÷ÒªµÄCPANÕ¾µãÓУº ¹úÄÚ£ºftp://freesoft.cgi.g ..
 
¡¤PerlÎļþ¼°Ä¿Â¼²Ù×÷ 2004-05-25
´ó¶àÊý³ÌÐò¶¼²»ÊǹÂÁ¢µÄ,ËüÃÇÓëËüÃǵĻ·¾³Ï໥×÷Ó᣺ܶàµÄ³ÌÐòÒ²ÐèҪͨ¹ýÎļþ²Ù×÷ʵÏÖÊý¾ÝµÄ´æÖüºÍ½»»»¡£ Îļþ¾ä±ú(file handle)ÊÇPerl³ÌÐòÖÐΪ³ÌÐòºÍÍⲿÊÀ½çÌṩI/OÁ¬½ÓµÄÃû³Æ¡£½¨ÒéÈ«²¿Ê¹Óôóд×ÖĸÒÔʾÓë±äÁ¿µÈµÄÇø±ð¡£ÌØ±ðµØ£¬Ò²¿ÉÒÔ½«STDIN/STDOUT/STDERRÒ²ÈÏΪ ÊÇPerlµÄÎļþ¾ä±ú£¬·Ö±ð´ú±í±ê×¼ÊäÈë/±ê×¼Êä³ö/±ê×¼´íÎóÊä³ö¡£ ´ò¿ª¼°¹Ø±ÕÎļþ PerlµÄÎļþ²Ù×÷ÓëCÓïÑÔ¼«ÎªÏ ..
 
¡¤Perl½ø³Ì¹ÜÀí 2004-05-25
µ±ÄãÏòϵͳshell·¢ËÍÒ»¸öÃüÁîÐÐʱ£¬shell´´½¨Ò»¸ö½ø³ÌÀ´Ö´ÐÐÕâ¸öÃüÁî¡£Õâ¸öнø³Ì³ÉΪshellµÄ×Ó½ø³Ì£¬ËüµÄÖ´Ðв»ÒÀÀµÓÚshellµ«ÓÖÓëshellÏ໥Эµ÷¡£ ͬÑù£¬Perl³ÌÐòÒ²ÄÜÆô¶¯Ð½ø³Ì¡£ ʹÓÃsystem()ºÍexec() Éú³Éнø³ÌµÄ×î¼òµ¥µÄ·½·¨¾ÍÊÇÓÃsystem²Ù×÷·û¡£È磺 system("date"); ÈôÒª½«Êä³öËÍÖÁnow_dayÎļþ£¬Ôò¿ÉÒÔ£º system("date>now_day") ||die "²»Äܽ¨Á¢n ..
 
¡¤PerlµÄ»ù±¾ÊäÈëÊä³ö 2004-05-25
´ÓSTDINÊäÈë ´Ó±ê×¼ÊäÈëÉ豸¶ÁÈ¡Êý¾ÝÊǺÜÈÝÒ׵ģ¬ÎÒÃÇÒѾ­´ÓµÚÒ»¿ÎÉϾÍʹÓã¼STDIN£¾²Ù×÷·ûÁË¡£ÀýÈ磺 =£¼STDIN£¾; ÔÚÊý×é»·¾³ÖУ¬¿É°ÑËùÓÐÊ£ÓàµÄÐÐ×÷ΪһÁÐ±í·µ»Ø¡£È磺 @name=£¼STDIN£¾; ´Ëʱ£¬ÐèÒª¶ÁÈë¶àÐУ¬È»ºóÔÙ¶Ô¸÷Ðзֱð´¦Àí¡£Í¨³£×ö·¨ÊÇ£º while(=£¼STDIN£¾){ chop(); #´¦Àí(ÿһÐÐ) } ÉÏÊö³ÌÐò¿É¼ò»¯Îª£º while(£¼STDIN£¾){ ..
 
¡¤Perl³£ÓÃϵͳº¯Êý 2004-05-25
Ö¸Áprint Óï·¨£ºprint Filehandle LIST ˵Ã÷£ºÕâ¸öFilehandle¿ÉÒÔ¿´×÷ÔÚI(INPUT)/O(OUTPUT)Ö®¼äµÄÒ»¸öÇÅÁº,¿ÉÒÔÀûÓÃFILEHANDLEÀ´×ö³öÊý¾Ý¶ÁÈëд ³öµÄ¶¯×÷.STDINÊÇ´ú±í´ÓÄÄÁ¬ÊäÈëÊý¾Ý,ÀýÈç´ÓµçÄԵļüÅÌÊäÈë;STDOUTÊÇ´ú±í´ÓÄÄÁ¬Êä³öÊý¾Ý;ÀýÈç´ÓµçÄÔµÄÆÁ Ä»Êä³ö;STDERRÊÇ´ú±í´ÓÄÄÁ¬Êä³ö´íÎóµÄÊý¾Ý,ÀýÈç´ÓµçÄÔµÄÆÁÄ»Êä³ö.¶øÔÚPERLÓïÑÔÖÐÓÐÈý¸ö±ê×¼FILEHANDLE£º 1.STDIN(±ê×¼ÊäÈë)£ ..
 
¡¤CGI¶ÁдCOOKIEµÄ±à³Ì 2004-05-25
COOKIEµÄÓÃ;ÏàÐÅ´ó¼Ò¶¼ÖªµÀÁË£¬ÓÐʱÎÒÃǵÄCGIÐèÒª¼Ç¼¶Áȡij¸öÀ´·ÃÕßµÄЊϢ£¬ÀýÈç¸ÃÀ´·ÃÕßʹÓøÃCGIµÄÇé¿ö£¬ÄǾ͵ÃÓõ½COOIKE¼¼Êõ£¬ÏÂÃæ¾ÍÌÖÂÛһϠÈçºÎÓÃCGIÀ´¼Ç¼¡¢¶ÁÈ¡À´·ÃÕß¼ÆËã»úÖеÄCOOKIE¡£ COOKIEÔÚ²»Í¬µÄä¯ÀÀÆ÷ÉϵĴ洢·½Ê½ÊDz»Í¬µÄ£¬µ«Õâ²¢²»´æÔÚ²»¼æÈݵÄÎÊÌ⣬Òò ΪWEB·þÎñÆ÷Óëä¯ÀÀÆ÷Ö®¼äÊÇͨ¹ýHTTPÏìӦͷʵÏÖ»¥Ïà´«ËÍCOOKIEµÄÐÅÏ¢µÄ£¬ÎÒ ÃÇÔÚ¶ÁдCOOKIEʱ²»±ØÀí»áÆ ..
 
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