I am studying sort_flags
at this page on PHP Manual.
And I don't understand what difference each of these flags represents.
There are only 6 flags, can someone please help me to understand the difference between them. Maybe with some examples. I would be very thankful.
Array used for testing:
$toSort = array(2, 1, "img1", "img2", "img10", 1.5, "3.14", "2.72");
Note that 3.14 & 2.72
are strings.
Using SORT_REGULAR
flag (compare items normally):
Array
(
[0] => 2.72
[1] => 3.14
[2] => img1
[3] => img10
[4] => img2
[5] => 1
[6] => 1.5
[7] => 2
)
Using SORT_NUMERIC
flag (compare items numerically, so 3.14
is sorted as number not a string):
Array
(
[0] => img10
[1] => img1
[2] => img2
[3] => 1
[4] => 1.5
[5] => 2
[6] => 2.72
[7] => 3.14
)
Using SORT_STRING
flag (SORT_LOCALE_STRING
works similary, but depends on current locale, all values are treated as strings):
Array
(
[0] => 1
[1] => 1.5
[2] => 2
[3] => 2.72
[4] => 3.14
[5] => img1
[6] => img10
[7] => img2
)
Using SORT_NATURAL
flag (note order of img*
strings, it is natural):
Array
(
[0] => 1
[1] => 1.5
[2] => 2
[3] => 2.72
[4] => 3.14
[5] => img1
[6] => img2
[7] => img10
)
SORT_FLAG_CASE
can be combined with SORT_STRING
or SORT_NATURAL
to do case-insensitive sort e.g.:
// works like SORT_NATURAL but is case-insensitive
sort($toSort, SORT_NATURAL | SORT_FLAG_CASE);
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