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split
(PHP 4, PHP 5)
split — Split string into array by regular expression
This function was DEPRECATED in PHP 5.3.0, and REMOVED in PHP 7.0.0.
Alternatives to this function include:
Description
$pattern
, string $string
[, int $limit = -1
] ) : array
Splits a string into array by regular expression.
Parameters
-
pattern -
Case sensitive regular expression.
If you want to split on any of the characters which are considered special by regular expressions, you'll need to escape them first. If you think split() (or any other regex function, for that matter) is doing something weird, please read the file regex.7, included in the regex/ subdirectory of the PHP distribution. It's in manpage format, so you'll want to do something along the lines of man /usr/local/src/regex/regex.7 in order to read it.
-
string -
The input string.
-
limit -
If
limitis set, the returned array will contain a maximum oflimitelements with the last element containing the whole rest ofstring.
Return Values
Returns an array of strings, each of which is a substring of
string formed by splitting it on boundaries formed
by the case-sensitive regular expression pattern.
If there are n occurrences of
pattern, the returned array will contain
n+1 items. For example, if
there is no occurrence of pattern, an array with
only one element will be returned. Of course, this is also true if
string is empty. If an error occurs,
split() returns FALSE.
Examples
Example #1 split() example
To split off the first four fields from a line from /etc/passwd:
<?php
list($user, $pass, $uid, $gid, $extra) =
split(":", $passwd_line, 5);
?>
Example #2 split() example
To parse a date which may be delimited with slashes, dots, or hyphens:
<?php
// Delimiters may be slash, dot, or hyphen
$date = "04/30/1973";
list($month, $day, $year) = split('[/.-]', $date);
echo "Month: $month; Day: $day; Year: $year<br />\n";
?>
Notes
split() is deprecated as of PHP 5.3.0. preg_split() is the suggested alternative to this function. If you don't require the power of regular expressions, it is faster to use explode(), which doesn't incur the overhead of the regular expression engine.
For users looking for a way to emulate Perl's @chars = split('', $str) behaviour, please see the examples for preg_split() or str_split().
See Also
- preg_split() - Split string by a regular expression
- spliti() - Split string into array by regular expression case insensitive
- str_split() - Convert a string to an array
- explode() - Split a string by a string
- implode() - Join array elements with a string
- chunk_split() - Split a string into smaller chunks
- wordwrap() - Wraps a string to a given number of characters
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