Heim >Backend-Entwicklung >PHP-Tutorial >php, 在一串字符中中取得两个字符串之间的字符串
br-lan Link encap:Ethernet HWaddr F0:B4:29:55:6C:2E
inet addr:192.168.8.9 Bcast:192.168.8.255 Mask:255.255.255.0
inet6 addr: fdc1:b4aa:57ba::1/60 Scope:Global
inet6 addr: fe80::f2b4:29ff:fe55:6c2e/64 Scope:Link
inet6 addr: fd7b:7c0f:5360:4::1/62 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6135 errors:0 dropped:0 overruns:0 frame:0
TX packets:7308 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:774045 (755.9 KiB) TX bytes:2084983 (1.9 MiB)
//在以上字符串中,我要取出inet addr:192.168.8.9 Bcast之间的ip地址,请问php的正刚表达式怎么写?谢谢。
// $return_array 是以上字符串数组。
foreach ( $return_array as $value ) { //if ( preg_match( "/inet addr:/i", $value, $temp_array) ) if ( preg_match("\binet addr:\b.*\bBcast\b", $value, $temp_array) ) { echo '<br /><br />'; print_r($temp_array); //var_dump( $temp_array ); } }
up,在线等。
if (preg_match("[0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}", $value, $temp_array)) // 放代码里,这行有错误,用工具测试ok. { echo '<br /><br />'; //print_r($temp_array); var_dump( $temp_array ); }
// \b[0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}\b //if (preg_match("/\b[0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}\b/", $value, $temp_array)) if (preg_match("/[0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}/", $value, $temp_array)) // OK { echo '<br /><br />'; //print_r($temp_array); var_dump( $temp_array ); }
if ( preg_match("/inet addr:(.+?)\s+Bcast:/", $value, $temp_array) ) { echo '<br /><br />'; print_r($temp_array); //var_dump( $temp_array ); }
$s =<<< TXTbr-lan Link encap:Ethernet HWaddr F0:B4:29:55:6C:2E inet addr:192.168.8.9 Bcast:192.168.8.255 Mask:255.255.255.0 inet6 addr: fdc1:b4aa:57ba::1/60 Scope:Global inet6 addr: fe80::f2b4:29ff:fe55:6c2e/64 Scope:Link inet6 addr: fd7b:7c0f:5360:4::1/62 Scope:Global UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:6135 errors:0 dropped:0 overruns:0 frame:0 TX packets:7308 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:774045 (755.9 KiB) TX bytes:2084983 (1.9 MiB)TXT;preg_match('/(?<=addr:)[.\d]+/', $s, $m);echo $m[0];192.168.8.9