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vendor/phpoffice/math/docs/usage/readers.md

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+
+## Readers
+### MathML
+The name of the reader is `MathML`.
+
+``` php
+<?php
+
+use PhpOffice\Math\Reader\MathML;
+
+$reader = new MathML();
+$math = $reader->read(
+   '<?xml version="1.0" encoding="UTF-8"?>
+    <!DOCTYPE math PUBLIC "-//W3C//DTD MathML 2.0//EN" "http://www.w3.org/Math/DTD/mathml2/mathml2.dtd">
+    <math xmlns="http://www.w3.org/1998/Math/MathML">
+        <mi> a </mi>
+    </math>'
+);
+```
+
+### OfficeMathML
+The name of the reader is `OfficeMathML`.
+
+``` php
+<?php
+
+use PhpOffice\Math\Reader\OfficeMathML;
+
+$reader = new OfficeMathML();
+$math = $reader->read(
+   '<m:oMathPara xmlns:m="http://schemas.openxmlformats.org/officeDocument/2006/math">
+      <m:oMath>
+        <m:f>
+          <m:num><m:r><m:t>π</m:t></m:r></m:num>
+          <m:den><m:r><m:t>2</m:t></m:r></m:den>
+        </m:f>
+      </m:oMath>
+    </m:oMathPara>'
+);
+```
+
+## Methods
+
+### read
+
+The method has one parameter :
+
+* `string` **$content**
+
+The method returns a `PhpOffice\Math\Math` object.