Php 第二次斜杠后的预匹配查找

这是我的字符串：

stringa/stringb/123456789,abc,cde

赛前赛后：

preg_match('/(?<=\/).*?(?=,)/',$array,$matches);

如何更改preg_匹配以在第二个斜杠（或最后一个斜杠）后提取字符串

期望输出：

123456789

---

您可以将

/

以外的任何内容匹配为

/(?<=\/)[^\/,]*(?=,)/

这应该可以做到

<?php
$array = 'stringa/stringb/123456789,abc,cde';
preg_match('~.*/(.*?),~',$array,$matches);
echo $matches[1];
?>

---

忽略所有内容，直到最后一个正斜杠（

*/

）。找到最后一个正斜杠后，保留所有数据直到第一个逗号（

（.*），

）为止。

您不需要使用lookback，即：

$string = "stringa/stringb/123456789,abc,cde";
$string = preg_replace('%.*/(.*?),.*%', '$1', $string );
echo $string;
//123456789

---

演示：

---

正则表达式解释：

.*/(.*?),.*

Match any single character that is NOT a line break character «.*»
   Between zero and unlimited times, as many times as possible, giving back as needed (greedy) «*»
Match the character “/” literally «/»
Match the regex below and capture its match into backreference number 1 «(.*?)»
   Match any single character that is NOT a line break character «.*?»
      Between zero and unlimited times, as few times as possible, expanding as needed (lazy) «*?»
Match the character “,” literally «,»
Match any single character that is NOT a line break character «.*»
   Between zero and unlimited times, as many times as possible, giving back as needed (greedy) «*»

$1

Insert the text that was last matched by capturing group number 1 «$1»

---

谢谢你，这很有效！它不应该是[…]而不是

，

或

/

？@Driver在

[^]

中给出的任何内容都将被否定。因此，要匹配除

、

或

/

以外的任何内容，我们应该将其命名为

[^，\/]

$string = "stringa/stringb/123456789,abc,cde";
$string = preg_replace('%.*/(.*?),.*%', '$1', $string );
echo $string;
//123456789

.*/(.*?),.*

Match any single character that is NOT a line break character «.*»
   Between zero and unlimited times, as many times as possible, giving back as needed (greedy) «*»
Match the character “/” literally «/»
Match the regex below and capture its match into backreference number 1 «(.*?)»
   Match any single character that is NOT a line break character «.*?»
      Between zero and unlimited times, as few times as possible, expanding as needed (lazy) «*?»
Match the character “,” literally «,»
Match any single character that is NOT a line break character «.*»
   Between zero and unlimited times, as many times as possible, giving back as needed (greedy) «*»

$1

Insert the text that was last matched by capturing group number 1 «$1»