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copied!<p>Try this out. Works like a beauty for me:</p> <pre><code>((?<=key[0-9]?=)[^\s]*(\s|$))+ </code></pre> <p><code>(?<=regex)</code> is a zero-width (non-consuming) look-behind. This ensures that the value is preceded by <code>key[0-9]?=</code>. You can adjust the <code>[0-9]</code> to suit your exact needs, but the <code>?</code> make that digit optional anyways. The value part is matching anything that is <strong>not</strong> a space: <code>[^\s]</code>. It keeps consuming, <code>*</code>, and terminates the value when it finds a space or end-of-string <code>(\s|$)</code>.</p> <hr> <h2>Update</h2> <p>I started looking at the blob of data you gave as what you're actually searching over and modified the expression thus:</p> <pre><code>([^\s]+)=(.+?(?=([^\s]+=|$))) </code></pre> <p>Works great on the header data you provided (if you're copy/pasting into a tester, remember to remove the hard returns).</p> <p>Matches:</p> <p><code>Url</code>,<code>/flash/56553550_hi.mp4</code></p> <p><code>Log</code>,<code>SESSIONSTART [16/Dec/2010:13:44:17 +0000] flash/56553550_hi.mp4 0 192.168.20.31 1 [16/Dec/2010:13:44:17 +0000] 0 0 0 [0 No Error] [0 No Error [rtmp://helix.pete.videolibraryserver.com/flash/56553550_hi.mp4]</code></p> <p><em><strong>To not match the key</strong> (only the value):</em></p> <pre><code>[^\s]+=(.+?(?=([^\s]+=|$))) </code></pre> <hr> <p><strong><a href="http://www.regular-expressions.info/reference.html" rel="nofollow">RegEx Reference</a></strong></p> <p><a href="http://regexlib.com/RETester.aspx" rel="nofollow"><strong>RegEx Tester</strong></a></p>

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