Add tags for arithmetic operator page (#4101)

Slightly change wording

Author: Girgias

language/operators/arithmetic.xml

@@ -18,56 +18,58 @@
    </thead>
    <tbody>
     <row>
-     <entry>+$a</entry>
+     <entry><code>+$a</code></entry>
      <entry>Identity</entry>
      <entry>
       Conversion of <varname>$a</varname> to <type>int</type> or
       <type>float</type> as appropriate.
      </entry>
     </row>
     <row>
-     <entry>-$a</entry>
+     <entry><code>-$a</code></entry>
      <entry>Negation</entry>
      <entry>Opposite of <varname>$a</varname>.</entry>
     </row>
     <row>
-     <entry>$a + $b</entry>
+     <entry><code>$a + $b</code></entry>
      <entry>Addition</entry>
      <entry>Sum of <varname>$a</varname> and <varname>$b</varname>.</entry>
     </row>
     <row>
-     <entry>$a - $b</entry>
+     <entry><code>$a - $b</code></entry>
      <entry>Subtraction</entry>
      <entry>Difference of <varname>$a</varname> and <varname>$b</varname>.</entry>
     </row>
     <row>
-     <entry>$a * $b</entry>
+     <entry><code>$a * $b</code></entry>
      <entry>Multiplication</entry>
      <entry>Product of <varname>$a</varname> and <varname>$b</varname>.</entry>
     </row>
     <row>
-     <entry>$a / $b</entry>
+     <entry><code>$a / $b</code></entry>
      <entry>Division</entry>
      <entry>Quotient of <varname>$a</varname> and <varname>$b</varname>.</entry>
     </row>
     <row>
-     <entry>$a % $b</entry>
+     <entry><code>$a % $b</code></entry>
      <entry>Modulo</entry>
      <entry>Remainder of <varname>$a</varname> divided by <varname>$b</varname>.</entry>
     </row>
     <row>
-     <entry>$a ** $b</entry>
+     <entry><code>$a ** $b</code></entry>
      <entry>Exponentiation</entry>
      <entry>Result of raising <varname>$a</varname> to the <varname>$b</varname>'th power.</entry>
     </row>
    </tbody>
   </tgroup>
  </table>
  <simpara>
-  The division operator ("/") returns a float value unless the two operands
-  are integers (or strings that get converted to integers) and the numbers
-  are evenly divisible, in which case an integer value will be returned. For
-  integer division, see <function>intdiv</function>.
+  The division operator <literal>/</literal> returns a <type>float</type>
+  value unless the two operands are <type>int</type> (or
+  <link linkend="language.types.numeric-strings">numeric strings</link>
+  which are type juggled to <type>int</type>) and the numerator is a multiple
+  of the divisor, in which case an integer value will be returned.
+  For integer division, see <function>intdiv</function>.
  </simpara>
  <simpara>
   Operands of modulo are converted to <type>int</type>
@@ -76,21 +78,30 @@
  </simpara>
  <para>
   The result of the modulo operator <literal>%</literal> has the same sign
-  as the dividend — that is, the result of <literal>$a % $b</literal>
+  as the dividend — that is, the result of <code>$a % $b</code>
   will have the same sign as <varname>$a</varname>. For example:
   <informalexample>
    <programlisting role="php">
 <![CDATA[
 <?php
 
-echo (5 % 3)."\n";           // prints 2
-echo (5 % -3)."\n";          // prints 2
-echo (-5 % 3)."\n";          // prints -2
-echo (-5 % -3)."\n";         // prints -2
+var_dump(5 % 3);
+var_dump(5 % -3);
+var_dump(-5 % 3);
+var_dump(-5 % -3);
 
 ?>
 ]]>
    </programlisting>
+   &example.outputs;
+   <screen>
+<![CDATA[
+int(2)
+int(2)
+int(-2)
+int(-2)
+]]>
+   </screen>
   </informalexample>
  </para>
  <sect2 role="seealso">