(PHP 4, PHP 5, PHP 7, PHP 8)
end — Posiciona el puntero del array al final del array
end() desplaza el puntero interno del array
array hasta el último elemento y devuelve
su valor.
arrayEl array. Este array es pasado por referencia ya que será modificado por la función. Esto significa que debe pasar una verdadera variable y no una función que devuelva un array, ya que actualmente, solo las variables pueden ser pasadas por referencia.
Devuelve el valor del último elemento o false si el array está vacío.
| Versión | Descripción |
|---|---|
| 8.1.0 | Calling this function on objects is deprecated. Either convert the object to an array using get_mangled_object_vars() first, or use the methods provided by a class that implements Iterator, such as ArrayIterator, instead. |
| 7.4.0 | Instances of SPL classes are now treated like empty objects that have no properties instead of calling the Iterator method with the same name as this function. |
Ejemplo #1 Ejemplo con end()
<?php
$fruits = array('apple', 'banana', 'cranberry');
echo end($fruits); // cranberry
?>
It's interesting to note that when creating an array with numeric keys in no particular order, end() will still only return the value that was the last one to be created. So, if you have something like this:
<?php
$a = array();
$a[1] = 1;
$a[0] = 0;
echo end($a);
?>
This will print "0".This function returns the value at the end of the array, but you may sometimes be interested in the key at the end of the array, particularly when working with non integer indexed arrays:
<?php
// Returns the key at the end of the array
function endKey($array){
end($array);
return key($array);
}
?>
Usage example:
<?php
$a = array("one" => "apple", "two" => "orange", "three" => "pear");
echo endKey($a); // will output "three"
?>If all you want is the last item of the array without affecting the internal array pointer just do the following:
<?php
function endc( $array ) { return end( $array ); }
$items = array( 'one', 'two', 'three' );
$lastItem = endc( $items ); // three
$current = current( $items ); // one
?>
This works because the parameter to the function is being sent as a copy, not as a reference to the original variable.If you need to get a reference on the first or last element of an array, use these functions because reset() and end() only return you a copy that you cannot dereference directly:
<?php
function first(&$array) {
if (!is_array($array)) return &$array;
if (!count($array)) return null;
reset($array);
return &$array[key($array)];
}
function last(&$array) {
if (!is_array($array)) return &$array;
if (!count($array)) return null;
end($array);
return &$array[key($array)];
}
?>I found that the function end() is the best for finding extensions on file name. This function cleans backslashes and takes the extension of a file.
<?php
private function extension($str){
$str=implode("",explode("\\",$str));
$str=explode(".",$str);
$str=strtolower(end($str));
return $str;
}
// EXAMPLE:
$file='name-Of_soMe.File.txt';
echo extension($file); // txt
?>
Very simple.