我在PHP中有一个字符串:
string(765) " ; <<>> DiG 9.9.5-9+deb8u10-Debian <<>> -t a webtools.hu @217.65.97.38 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62425 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 3 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;webtools.hu. IN A ;; ANSWER SECTION: webtools.hu. 60 IN A 217.65.97.116 ;; AUTHORITY SECTION: webtools.hu. 60 IN NS ns2.wwdh.hu. webtools.hu. 60 IN NS ns1.wwdh.hu. ;; ADDITIONAL SECTION: ns1.wwdh.hu. 60 IN A 213.239.206.117 ns2.wwdh.hu. 60 IN A 217.65.97.38 ;; Query time: 1 msec ;; SERVER: 217.65.97.38#53(217.65.97.38) ;; WHEN: Tue Apr 04 17:25:11 CEST 2017 ;; MSG SIZE rcvd: 129 "
我想删除所有以空格和分号(;)
开头的行我尝试使用preg_replace
,但它没有给出正确答案。
$eredmeny1 = preg_replace('/(^ ;)+/', '', $output);
你可以告诉我吗?
答案 0 :(得分:0)
$string = " ; <<>> DiG 9.9.5-9+deb8u10-Debian
vds
jfgh gdf
; <<>> DiG 9.9.5-9+deb8u10-Debian
hgf";
$eredmeny1 = preg_replace("/(?:[\r\n]+|^) ;.*\n/", "", $output);
// Output: vds
// jfgh gdfhgf";
答案 1 :(得分:0)
如果您想从文件中读取并删除所有字符串,请尝试以下代码:
k
答案 2 :(得分:0)
您的问题需要更清晰。我不确定你是否不想“爆炸”字符串并从给定数组中收集文本。
<?php
$output = " ; <<>> DiG 9.9.5-9+deb8u10-Debian <<>> -t a webtools.hu
@217.65.97.38 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<-
opcode: QUERY, status: NOERROR, id: 62425 ;; flags: qr aa rd; QUERY: 1,
ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 3 ;; WARNING: recursion requested
but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp:
4096 ;; QUESTION SECTION: ;webtools.hu. IN A ;; ANSWER SECTION:
webtools.hu. 60 IN A 217.65.97.116 ;; AUTHORITY SECTION: webtools.hu.
60 IN NS ns2.wwdh.hu. webtools.hu. 60 IN NS ns1.wwdh.hu. ;;
ADDITIONAL SECTION: ns1.wwdh.hu. 60 IN A 213.239.206.117
ns2.wwdh.hu. 60 IN A 217.65.97.38 ;; Query time: 1 msec ;; SERVER:
217.65.97.38#53(217.65.97.38) ;; WHEN: Tue Apr 04 17:25:11 CEST 2017 ;;
MSG SIZE rcvd: 129 ";
$tset = explode(" ;",$output);
foreach($tset as $t){ echo"$t \n";}
?>
OR
...也许你可以用正确的POSIX正则表达式“exec()”“sed -ie's / ^; // g'”。