PHP 5.6.0 released

strncasecmp

(PHP 4 >= 4.0.2, PHP 5)

strncasecmpBinary safe case-insensitive string comparison of the first n characters

Description

int strncasecmp ( string $str1 , string $str2 , int $len )

This function is similar to strcasecmp(), with the difference that you can specify the (upper limit of the) number of characters from each string to be used in the comparison.

Parameters

str1

The first string.

str2

The second string.

len

The length of strings to be used in the comparison.

Return Values

Returns < 0 if str1 is less than str2; > 0 if str1 is greater than str2, and 0 if they are equal.

See Also

  • strncmp() - Binary safe string comparison of the first n characters
  • preg_match() - Perform a regular expression match
  • substr_compare() - Binary safe comparison of two strings from an offset, up to length characters
  • strcasecmp() - Binary safe case-insensitive string comparison
  • stristr() - Case-insensitive strstr
  • substr() - Return part of a string

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User Contributed Notes 1 note

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saikumar dot msc at gmail dot com
2 months ago
Example:
<?php
$string
= “true”;
if(
strncasecmp($string, “Trudeau”, 4)) { print “True”; } else { print "False" }
?>

If we look at above example, immediately we will say the final output will be 'False', but that's not real.

Method "strncasecmp()" returns 1 because the first four characters of ‘Trud’ come before the first four characters of "true" when sorted not case sensitively.
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