w3resource

PHP: strnatcmp() function

Description

The strnatcmp() function compare two strings using a "natural order" algorithm. This comparison is case sensitive.

Version:

(PHP 4 and above)

Syntax:

strnatcmp(string1, string2)

Parameters:

Name Description Required /
Optional
Type
string1 The first string. Required String
string2 The second string. Required String

Return value:

< 0 if string1<string2.
> 0 if string1>string2.
0 if string1=string2.

Value Type: Integer

Example:

<?php
echo strnatcmp('w3resource.com', 'W3RESOURCE.com');
?>

Output:

1 

View the example in the browser

See also

PHP Function Reference

Previous: strlen
Next: strncasecmp



PHP: Tips of the Day

PHP: Using str_replace so that it only acts on the first match?

Can be done with preg_replace:

function str_replace_first($from, $to, $content)
{
    $from = '/'.preg_quote($from, '/').'/';

    return preg_replace($from, $to, $content, 1);
}

echo str_replace_first('abc', '123', 'abcdef abcdef abcdef'); 
// outputs '123def abcdef abcdef'

The magic is in the optional fourth parameter [Limit]. From the documentation:

[Limit] - The maximum possible replacements for each pattern in each subject string. Defaults to -1 (no limit).

Ref : https://bit.ly/35SCuP8