Another fgetscv proprietary description. (#5101)

Co-authored-by: André L F S Bacci <[email protected]>

Author: alfsb

reference/spl/splfileobject/fgetcsv.xml

@@ -57,13 +57,17 @@
       </para>
       <warning>
        <simpara>
-       Inside an <parameter>enclosure</parameter>, the <parameter>enclosure</parameter> character can always be <parameter>escaped</parameter> by doubling it,
-       resulting in a single <parameter>enclosure</parameter> character in the parsed result.
-       The <parameter>escaped</parameter> character works differently:
-       If it is followed by an <parameter>enclosure</parameter> character then that <parameter>enclosure</parameter> character will not be treated as one,
-       however the <parameter>escaped</parameter> character itself remains. So for the default parameters, <literal>""</literal>
-       inside an <parameter>enclosure</parameter> will be parsed into <literal>",</literal> while <literal>\"</literal> inside an
-       <parameter>enclosure</parameter> will be parsed into <literal>\"</literal>.
+       In the input stream, the <parameter>enclosure</parameter> character
+       can always be escaped by doubling it inside a quoted string,
+       resulting in a single <parameter>enclosure</parameter> character
+       in the parsed result.
+       The <parameter>escape</parameter> character works differently:
+       If a sequence of <parameter>escape</parameter> and
+       <parameter>enclosure</parameter> characters appear in the stream,
+       both characters will be present in the parsed value.
+       So for the default parameters, <literal>""</literal>
+       in quoted strings will be parsed as <literal>"</literal>, while
+       <literal>\"</literal> parsed as <literal>\"</literal>.
        </simpara>
       </warning>
       <warning>
@@ -90,7 +94,7 @@
   <note>
    <para>
     A blank line in a CSV file will be returned as an array
-    comprising a single &null; field unless using <constant>SplFileObject::SKIP_EMPTY | SplFileObject::DROP_NEW_LINE</constant>, 
+    comprising a single &null; field unless using <constant>SplFileObject::SKIP_EMPTY | SplFileObject::DROP_NEW_LINE</constant>,
     in which case empty lines are skipped.
    </para>
   </note>