ArrayObject::natcasesort

(PHP 5 >= 5.2.0)

ArrayObject::natcasesort — Sort an array using a case insensitive "natural order" algorithm

说明

public void ArrayObject::natcasesort ( void )

This method is a case insensitive version of ArrayObject::natsort.

This method implements a sort algorithm that orders alphanumeric strings in the way a human being would while maintaining key/value associations. This is described as a "natural ordering".

参数

此函数没有参数。

返回值

没有返回值。

范例

Example #1 ArrayObject::natcasesort() example

  <?php
$array  = array( 'IMG0.png' ,  'img12.png' ,  'img10.png' ,  'img2.png' ,  'img1.png' ,  'IMG3.png' );

 $arr1  = new  ArrayObject ( $array );
 $arr2  = clone  $arr1 ;

 $arr1 -> asort ();
echo  "Standard sorting\n" ;
 print_r ( $arr1 );

 $arr2 -> natcasesort ();
echo  "\nNatural order sorting (case-insensitive)\n" ;
 print_r ( $arr2 );
 ?>

以上例程会输出：

Standard sorting
ArrayObject Object
(
    [0] => IMG0.png
    [5] => IMG3.png
    [4] => img1.png
    [2] => img10.png
    [1] => img12.png
    [3] => img2.png
)Natural order sorting (case-insensitive)
ArrayObject Object
(
    [0] => IMG0.png
    [4] => img1.png
    [3] => img2.png
    [5] => IMG3.png
    [2] => img10.png
    [1] => img12.png
)

For more information see: Martin Pool's » Natural Order String Comparison page.

参见

ArrayObject::asort() - Sort the entries by value
ArrayObject::ksort() - Sort the entries by key
ArrayObject::natsort() - Sort entries using a "natural order" algorithm
ArrayObject::uasort() - Sort the entries with a user-defined comparison function and maintain key association
ArrayObject::uksort() - Sort the entries by keys using a user-defined comparison function