PHP: Split a string by string

Description

array explode ( string $delimiter , string $string [, int $limit ] )

Returns an array of strings, each of which is a substring of string formed by splitting it on boundaries formed by the string delimiter .

Parameters

delimiter

The boundary string.

string

The input string.

limit

If limit is set, the returned array will contain a maximum of limit elements with the last element containing the rest of string .

If the limit parameter is negative, all components except the last -limit are returned.

Although implode() can, for historical reasons, accept its parameters in either order, explode() cannot. You must ensure that the delimiter argument comes before the string argument.

Return Values

If delimiter is an empty string (""), explode() will return FALSE. If delimiter contains a value that is not contained in string , then explode() will return an array containing string .

ChangeLog

Version Description

5.1.0 Support for negative limit s was added

4.0.1 The limit parameter was added

Examples

Example #1 explode() examples


<?php

// Example 1

$pizza  = "piece1 piece2 piece3 piece4 piece5 piece6";

$pieces = explode(" ", $pizza);

echo $pieces[0]; // piece1

echo $pieces[1]; // piece2



// Example 2

$data = "foo:*:1023:1000::/home/foo:/bin/sh";

list($user, $pass, $uid, $gid, $gecos, $home, $shell) = explode(":", $data);

echo $user; // foo

echo $pass; // *



?>

Example #2 limit parameter examples


<?php

$str = 'one|two|three|four';



// positive limit

print_r(explode('|', $str, 2));



// negative limit (since PHP 5.1)

print_r(explode('|', $str, -1));

?>

The above example will output:

Array
(
    [0] => one
    [1] => two|three|four
)
Array
(
    [0] => one
    [1] => two
    [2] => three
)

Notes

Note: This function is binary-safe.

explode