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<refentry xml:id="function.fgetcsv" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>fgetcsv</refname>
  <refpurpose>Gets line from file pointer and parse for CSV fields</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type class="union"><type>array</type><type>false</type></type><methodname>fgetcsv</methodname>
   <methodparam><type>resource</type><parameter>stream</parameter></methodparam>
   <methodparam choice="opt"><type class="union"><type>int</type><type>null</type></type><parameter>length</parameter><initializer>&null;</initializer></methodparam>
   <methodparam choice="opt"><type>string</type><parameter>separator</parameter><initializer>","</initializer></methodparam>
   <methodparam choice="opt"><type>string</type><parameter>enclosure</parameter><initializer>"\""</initializer></methodparam>
   <methodparam choice="opt"><type>string</type><parameter>escape</parameter><initializer>"\\"</initializer></methodparam>
  </methodsynopsis>
  <para>
   Similar to <function>fgets</function> except that
   <function>fgetcsv</function> parses the line it reads for fields in
   <acronym>CSV</acronym> format and returns an array containing the fields
   read.
  </para>
  <note>
   <simpara>
    The locale settings are taken into account by this function.
    For example, data encoded in certain one-byte encodings may be parsed
    incorrectly if <constant>LC_CTYPE</constant> is
    <literal>en_US.UTF-8</literal>.
   </simpara>
  </note>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>stream</parameter></term>
     <listitem>
      <para>
       A valid file pointer to a file successfully opened by
       <function>fopen</function>, <function>popen</function>, or
       <function>fsockopen</function>.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>length</parameter></term>
     <listitem>
      <para>
       Must be greater than the longest line (in characters) to be found in
       the CSV file (allowing for trailing line-end characters). Otherwise the
       line is split in chunks of <parameter>length</parameter> characters,
       unless the split would occur inside an enclosure.
      </para>
      <para>
       Omitting this parameter (or setting it to 0,
       or &null; in PHP 8.0.0 or later) the maximum line length is not limited,
       which is slightly slower.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>separator</parameter></term>
     <listitem>
      <para>
       The <parameter>separator</parameter> parameter sets the field separator.
       It must be a single byte character.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>enclosure</parameter></term>
     <listitem>
      <para>
       The <parameter>enclosure</parameter> parameter sets the field enclosure character.
       It must be a single byte character.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>escape</parameter></term>
     <listitem>
      <para>
       The <parameter>escape</parameter> parameter sets the escape character.
       It must be a single byte character or the empty string.
       The empty string (<literal>""</literal>) disables the proprietary escape mechanism.
      </para>
      <note>
       <simpara>
        Usually an <parameter>enclosure</parameter> character is escaped inside
        a field by doubling it; however, the <parameter>escape</parameter>
        character can be used as an alternative. So for the default parameter
        values <literal>""</literal> and <literal>\"</literal> have the same
        meaning. Other than allowing to escape the
        <parameter>enclosure</parameter> character the
        <parameter>escape</parameter> character has no special meaning; it isn't
        even meant to escape itself.
       </simpara>
      </note>
      <warning>
       <simpara>
        As of PHP 8.4.0, depending on the default value of
        <parameter>escape</parameter> is deprecated.
        It needs to be provided explicitly either positionally or by the use
        of <link linkend="functions.named-arguments">named arguments</link>.
       </simpara>
      </warning>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
  &warning.csv.escape-parameter;
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns an indexed array containing the fields read on success, &return.falseforfailure;.
  </para>
  <note>
   <para>
    A blank line in a CSV file will be returned as an array
    comprising a single <type>null</type> field, and will not be treated
    as an error.
   </para>
  </note>
  &note.line-endings;
 </refsect1>

 <refsect1 role="errors">
  &reftitle.errors;
  <simpara>
   Throws a <exceptionname>ValueError</exceptionname> if
   <parameter>separator</parameter> or <parameter>enclosure</parameter>
   is not one byte long.
  </simpara>
  <simpara>
   Throws a <exceptionname>ValueError</exceptionname> if
   <parameter>escape</parameter> is not one byte long or the empty string.
  </simpara>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <para>
   <informaltable>
    <tgroup cols="2">
     <thead>
      <row>
       <entry>&Version;</entry>
       <entry>&Description;</entry>
      </row>
     </thead>
     <tbody>
      <row>
       <entry>8.4.0</entry>
       <entry>
        Relying on the default value of <parameter>escape</parameter> is now
        deprecated.
       </entry>
      </row>
      <row>
       <entry>8.3.0</entry>
       <entry>
        An empty string is returned instead of a string with a single
        null byte for the last field if it contains only an unterminated
        enclosure.
       </entry>
      </row>
      <row>
       <entry>8.0.0</entry>
       <entry>
        <parameter>length</parameter> is now nullable.
       </entry>
      </row>
      <row>
       <entry>7.4.0</entry>
       <entry>
        The <parameter>escape</parameter> parameter now also accepts an empty
        string to disable the proprietary escape mechanism.
       </entry>
      </row>
     </tbody>
    </tgroup>
   </informaltable>
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>Read and print the entire contents of a CSV file</title>
    <programlisting role="php">
<![CDATA[
<?php
$row = 1;
if (($handle = fopen("test.csv", "r")) !== FALSE) {
    while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
        $num = count($data);
        echo "<p> $num fields in line $row: <br /></p>\n";
        $row++;
        for ($c=0; $c < $num; $c++) {
            echo $data[$c] . "<br />\n";
        }
    }
    fclose($handle);
}
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <simplelist>
   <member><function>fputcsv</function></member>
   <member><function>str_getcsv</function></member>
   <member><methodname>SplFileObject::fgetcsv</methodname></member>
   <member><methodname>SplFileObject::fputcsv</methodname></member>
   <member><methodname>SplFileObject::setCsvControl</methodname></member>
   <member><methodname>SplFileObject::getCsvControl</methodname></member>
   <member><function>explode</function></member>
   <member><function>file</function></member>
   <member><function>pack</function></member>
  </simplelist>
 </refsect1>

</refentry>
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