strnatcasecmp

(PHP 4, PHP 5, PHP 7, PHP 8)

strnatcasecmp — Case insensitive string comparisons using a "natural order" algorithm

Опис

strnatcasecmp(string $string1, string $string2): int

This function implements a comparison algorithm that orders alphanumeric strings in the way a human being would. The behaviour of this function is similar to strnatcmp(), except that the comparison is not case sensitive. For more information see: Martin Pool's » Natural Order String Comparison page.

Параметри

string1: The first string.
string2: The second string.

Значення, що повертаються

Similar to other string comparison functions, this one returns -1 if string1 is less than string2 1 if string1 is greater than string2, and 0 if they are equal.

Журнал змін

Версія	Опис
8.2.0	Тепер ця функція повертає `-1` або `1`, а не від'ємне або додатнє число, як раніше.

Приклади

Приклад #1 strnatcasecmp() example

<?php

var_dump(strnatcasecmp('Apple', 'Banana'));
var_dump(strnatcasecmp('Banana', 'Apple'));
var_dump(strnatcasecmp('apple', 'Apple'));
?>

Поданий вище приклад виведе:

int(-1)
int(1)
int(0)

Прогляньте також

preg_match() - Perform a regular expression match
strcmp() - Binary safe string comparison
strcasecmp() - Binary safe case-insensitive string comparison
substr() - Return part of a string
stristr() - Case-insensitive strstr
strncasecmp() - Binary safe case-insensitive string comparison of the first n characters
strncmp() - Binary safe string comparison of the first n characters
strstr() - Find the first occurrence of a string
setlocale() - Set locale information

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User Contributed Notes 2 notes

down

chatfielddaniel at googlemail dot com ¶

13 years ago

The function treats '_' as after letters and numbers when it would be placed before logically.

down

Marco ¶

8 years ago

Use strnatcmp to avoid the _ problem as mentioned below;

<<  The function treats '_' as after letters and numbers when it would be placed before logically. >>

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