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><H1
><A
NAME="function.split"
>split</A
></H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN33349"
></A
><P
>    (PHP3 , PHP4 )</P
>split&nbsp;--&nbsp;split string into array by regular expression</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN33352"
></A
><H2
>Description</H2
><DIV
CLASS="funcsynopsis"
><A
NAME="AEN33354"
></A
><P
></P
><P
><CODE
><CODE
CLASS="FUNCDEF"
>array <B
CLASS="function"
>split</B
></CODE
> (string pattern, string string [, int 
       limit])</CODE
></P
><P
></P
></DIV
><P
>&#13;     Returns an array of strings, each of which is a substring of
     <TT
CLASS="parameter"
><I
>string</I
></TT
> formed by splitting it on
     boundaries formed by the regular expression
     <TT
CLASS="parameter"
><I
>pattern</I
></TT
>.  If <TT
CLASS="parameter"
><I
>limit</I
></TT
>
     is set, the returned array will contain a maximum of
     <TT
CLASS="parameter"
><I
>limit</I
></TT
> elements with the last element
     containing the whole rest of <TT
CLASS="parameter"
><I
>string</I
></TT
>.  If
     an error occurs, <B
CLASS="function"
>split()</B
> returns false.
    </P
><P
>&#13;     To get the first five fields from a line from
     <TT
CLASS="filename"
>/etc/passwd</TT
>:
     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN33374"
></A
><P
><B
>Example 1. <B
CLASS="function"
>Split()</B
> Example</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
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><TR
><TD
><PRE
CLASS="programlisting"
>&#13;$passwd_list = split (":", $passwd_line, 5);
      </PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     To parse a date which may be delimited with slashes, dots, or
     hyphens:
     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN33379"
></A
><P
><B
>Example 2. <B
CLASS="function"
>Split()</B
> Example</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="programlisting"
>&#13;$date = "04/30/1973";  // Delimiters may be slash, dot, or hyphen
list ($month, $day, $year) = split ('[/.-]', $date);
echo "Month: $month; Day: $day; Year: $year&#60;br&#62;\n";
      </PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     Note that <TT
CLASS="parameter"
><I
>pattern</I
></TT
> is case-sensitive.
    </P
><P
>&#13;     Note that if you don't require the power of regular expressions,
     it is faster to use <A
HREF="function.explode.html"
><B
CLASS="function"
>explode()</B
></A
>, which doesn't
     incur the overhead of the regular expression engine.
    </P
><P
>&#13;     For users looking for a way to emulate perl's <B
CLASS="command"
>$chars =
      split('', $str)</B
> behaviour, please see the examples for
     <A
HREF="function.preg-split.html"
><B
CLASS="function"
>preg_split()</B
></A
>.
    </P
><P
>&#13;     Please note that <TT
CLASS="parameter"
><I
>pattern</I
></TT
> is a regular
     expression.  If you want to split on any of the characters which
     are considered special by regular expressions, you'll need to
     escape them first. If you think <B
CLASS="function"
>split()</B
> (or
     any other regex function, for that matter) is doing something
     weird, please read the file <TT
CLASS="filename"
>regex.7</TT
>,
     included in the <TT
CLASS="filename"
>regex/</TT
> subdirectory of the
     PHP distribution. It's in manpage format, so you'll want to do
     something along the lines of <B
CLASS="command"
>man
     /usr/local/src/regex/regex.7</B
> in order to read it.
    </P
><P
>&#13;     See also: <A
HREF="function.spliti.html"
><B
CLASS="function"
>spliti()</B
></A
>,
     <A
HREF="function.explode.html"
><B
CLASS="function"
>explode()</B
></A
>, and <A
HREF="function.implode.html"
><B
CLASS="function"
>implode()</B
></A
>.
    </P
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