Regular Expressions 101

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  • PCRE2 (PHP >=7.3)
  • PCRE (PHP <7.3)
  • ECMAScript (JavaScript)
  • Python 2.7
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@
<table>.*?(<tr>.*?(<td>(.*?)</td>).*?</tr>).*?</table>
@
g
<table> matches the characters <table> literally (case sensitive)
.*?
matches any character (except for line terminators)
*? Quantifier — Matches between zero and unlimited times, as few times as possible, expanding as needed (lazy)
1st Capturing Group
(<tr>.*?(<td>(.*?)</td>).*?</tr>)
<tr> matches the characters <tr> literally (case sensitive)
.*?
matches any character (except for line terminators)
*? Quantifier — Matches between zero and unlimited times, as few times as possible, expanding as needed (lazy)
2nd Capturing Group
(<td>(.*?)</td>)
<td> matches the characters <td> literally (case sensitive)
3rd Capturing Group
(.*?)
</td> matches the characters </td> literally (case sensitive)
.*?
matches any character (except for line terminators)
*? Quantifier — Matches between zero and unlimited times, as few times as possible, expanding as needed (lazy)
</tr> matches the characters </tr> literally (case sensitive)
.*?
matches any character (except for line terminators)
*? Quantifier — Matches between zero and unlimited times, as few times as possible, expanding as needed (lazy)
</table> matches the characters </table> literally (case sensitive)
Global pattern flags
g modifier: global. All matches (don't return after first match)
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

@
@
g

Test String