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split

Name

split — Splits the subject string along the boundaries defined by the specified POSIX regular expression pattern.

Synopsis

array split(pattern, subject[, limit]); string pattern: Regex pattern to split by string subject: Input string to split int limit (optional): Limits the number of results

Returns

Array containing the results of splitting; FALSE if an error occurs

Description

This function splits the given subject string into substrings on the boundaries matching the specified pattern . The optional parameter limit specifies how many pieces to return; if-1 or omitted, all pieces are returned. Otherwise, exactly limit pieces are returned, with the last piece containing the remainder of the subject string that was not split.

If the string needs to be split by a static string, explode() is faster.

Note

It's generally a good idea to use single quotation marks when specifying regular expressions in order to avoid unintentional interpolation of characters such as '$' and '\'.

Example

Example 1126. Normalize user input

$input = array("212.555.1212", "1-800-555-1212");
foreach ($input as $number) {
   $result = split('[.-]', $number);
   if (count($result) > 3)
      $result = array_slice($result, -3);
   echo implode('-', $result)."\n";
}

This example produces the following result:

212-555-1212
800-555-1212

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PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.