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PHP: strncmp() function

Description

The strncmp() function compare two strings of the first n characters.

Note : The comparison is case sensitive.

Version:

(PHP 4 and above)

Syntax:

strncmp(string1, string2, no_of_characters)

Parameters:

Name Description Required /
Optional
Type
string1 The first string. Required String
string2 The second string. Required String
no_of_characters Specified the number of characters from each string to be used in the comparison. Required Integer

Return value:

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

Value Type: Integer.

Example:

<?php
echo strncmp('Hello John...', 'Hello Anirban....', 6);
?>

Output :

0

View the example in the browser

See also

PHP Function Reference

Previous: strncasecmp
Next: strrchr



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