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    <h1>Description</h1> <p>This expression will:</p> <ul> <li>capture the group name as <code>ref</code></li> <li>capture the values of the <code>type</code> and <code>descr</code> fields. </li> <li>The Type field when captured should be put into a named group called <code>partnumber</code></li> <li>The fields can appear in any order in the body</li> <li>the <code>descr</code> field is optional and should only be captured if it exists. The <code>(?:</code>...<code>)?`` brackets around the</code>descr` field makes the field optional</li> </ul> <p>Note this is a single expression so you'll in to use the <code>x</code> option to so the regex engine ignore white space.</p> <pre><code>^part\s"(?P&lt;ref&gt;[^"]*)"[^{]*{ (?:(?=[^}]*\sdescr\s*:\s+"(?P&lt;descr&gt;[^"]*)"))? (?=[^}]*\stype\s*:\s+"(?P&lt;type&gt;[^"]*)") </code></pre> <p><img src="https://i.stack.imgur.com/aNUxe.png" alt="enter image description here"></p> <h1>PHP Code Example:</h1> <p><strong>Input Text</strong></p> <pre><code>part "C28" { type : "1AB010050093", %cadtype : "1AB010050094", shapeid : "2_1206", descr : "4700.0000 pFarad 10.00 % 100.0 - VE5-VS3", insclass : "CP6A,CP6B", gentype : "RECT_032_016_006", machine : "SMT", %package : "080450E", %_item_number: "508", %_Term_Seq : "" } part "C29" { type : "1AB008140029", shapeid : "2_1206", descr : "150.0000 pFarad 5.00 % 100.0 Volt NP0 CERAMIC CAPACITOR", insclass : "CP6A,CP6B", gentype : "RECT_032_016_006", machine : "SMT", %package : "080450E", %_item_number: "3", %_Term_Seq : "" } part "C30" { type : "1AB0081400 30", shapeid : "2_1206 30", insclass : "CP6A,CP6B 30", gentype : "RECT_032_016_006 30", machine : "SMT 30", %package : "080450E 30 ", %_item_number: "3 30 ", %_Term_Seq : "30" } </code></pre> <p><strong>Code</strong></p> <pre><code>&lt;?php $sourcestring="your source string"; preg_match_all('/^part\s"(?P&lt;ref&gt;[^"]*)"[^{]*{ (?:(?=[^}]*\sdescr\s*:\s+"(?P&lt;descr&gt;[^"]*)"))? (?=[^}]*\stype\s*:\s+"(?P&lt;partnumber&gt;[^"]*)")/imsx',$sourcestring,$matches); echo "&lt;pre&gt;".print_r($matches,true); ?&gt; </code></pre> <p><strong>Matches</strong></p> <pre><code>$matches Array: ( [ref] =&gt; Array ( [0] =&gt; C28 [1] =&gt; C29 [2] =&gt; C30 ) [descr] =&gt; Array ( [0] =&gt; 4700.0000 pFarad 10.00 % 100.0 - VE5-VS3 [1] =&gt; 150.0000 pFarad 5.00 % 100.0 Volt NP0 CERAMIC CAPACITOR [2] =&gt; ) [partnumber] =&gt; Array ( [0] =&gt; 1AB010050093 [1] =&gt; 1AB008140029 [2] =&gt; 1AB0081400 30 ) ) </code></pre>
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    3. CO@Denomales where do you get the regex visualization image from?
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