PHP » Strings » preg_split()
- Syntax:
- array preg_split(string separator, string s [, int n [, int flags]])
- separator
- Pattern that separates the elements.
- s
- String to convert to an array.
- limit
- Maximum number of elements to return in the array.
- flags
- Modifies the behavior of preg_split().
Makes an array of a string.
This function is similar to explode(), but uses Perl regular expressions instead of just strings for the separator. The string is split where there is a match for the separator, and the portions of the string between the matches are returned as elements of an array. If the n parameter is provided, a maximum of n elements will be returned in the array. The flags that can be specified are PREG_SPLIT_NO_EMPTY, for no empty strings in the returned array, PREG_SPLIT_DELIM_CAPTURE, which makes preg_split() return the subpatterns within parentheses, and PREG_SPLIT_OFFSET_CAPTURE, which makes the function return the offsets of the matches.
Examples
Code:
<pre>
<?php
$s = "http://www.somedomain.com";
$pattern = "/[http:\/\/|\.]/";
$a = preg_split($pattern, $s, 0,
PREG_SPLIT_NO_EMPTY | PREG_SPLIT_OFFSET_CAPTURE);
print_r($a);
?>
</pre> Output:
Array
(
[0] => Array
(
[0] => www
[1] => 7
)
[1] => Array
(
[0] => somedomain
[1] => 11
)
[2] => Array
(
[0] => com
[1] => 22
)
)
Explanation:
preg_split() is used to separate the components of a host name in a URL.
See Also:
