Funciones de strings
PHP Manual

explode

(PHP 4, PHP 5)

explodeSplit a string by string

Descripción

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.

Parámetros

delimiter

The boundary string.

string

The input string.

limit

If limit is set and positive, 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.

If the limit parameter is zero, then this is treated as 1.

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.

Valores devueltos

Returns an array of strings created by splitting the string parameter on boundaries formed by the delimiter.

If delimiter is an empty string (""), explode() will return FALSE. If delimiter contains a value that is not contained in string and a negative limit is used, then an empty arraywill be returned, otherwise an array containing string will be returned.

Historial de cambios

Versión Descripción
5.1.0 Support for negative limits was added
4.0.1 The limit parameter was added

Ejemplos

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('|'$str2));

// negative limit (since PHP 5.1)
print_r(explode('|'$str, -1));
?>

El resultado del ejemplo sería:

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

Notas

Note: Esta función es segura binariamente.

Ver también


Funciones de strings
PHP Manual