PHP 忒聊
綴豖
ヶ輛
strnatcmp
(PHP 4)
Description
This function implements a comparison algorithm that orders alphanumeric strings in the way a human being would, this is described as a "natural ordering". An example of the difference between this algorithm and the regular computer string sorting algorithms (used in strcmp()) can be seen below:
$arr1 = $arr2 = array("img12.png","img10.png","img2.png","img1.png"); echo "Standard string comparison\n"; usort($arr1,"strcmp"); print_r($arr1); echo "\nNatural order string comparison\n"; usort($arr2,"strnatcmp"); print_r($arr2);
Standard string comparison Array ([0] = img1.png [1] = img10.png [2] = img12.png [3] = img2.png) Natural order string comparison Array ([0] = img1.png [1] = img2.png [2] = img10.png [3] = img12.png)
Similar to other string comparison functions, this one returns 0 if str1 is less than str2; 0 if str1 is greater than str2, and 0 if they are equal.
Note that this comparison is case sensitive.
See also ereg(), strcasecmp(), substr(), stristr(), strcmp(), strncmp(), strncasecmp(), strnatcasecmp(), strstr(), natsort() and natcasesort().
綴豖
れ萸
ヶ輛
strnatcasecmp
奻珨撰
strncasecmp