PHP strnatcmp() ফাংশন

PHP String Function

উদাহরণ

প্রাকৃতিক" এলগোরিথম ব্যবহার করে দুই স্ট্রিং তুলনা করা হয়: (হাইপারকার্যক্ষম হার্ডকোড হিসাবে তুলনা করা হয়)

<?php
echo strnatcmp("2Hello world!","10Hello world!");
echo "<br>";
echo strnatcmp("10Hello world!","2Hello world!");
?>

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Definition and Usage

The strnatcmp() function uses a "natural" algorithm to compare two strings.

In natural algorithms, the number 2 is less than the number 10. In computer sorting, 10 is less than 2, because the first digit in 10 is less than 2.

Note:This function is case sensitive.

Syntax

strnatcmp(string1,string2)
Parameter Description
string1 Required. Specifies the first string to be compared.
string2 Required. Specifies the second string to be compared.

Technical Details

Return value:

This function returns:

  • 0 - If two strings are equal
  • <0 - If string1 is less than string2
  • >0 - If string1 is greater than string2
PHP Version: 4+

More Examples

Example 1

Difference between natural algorithm (strnatcmp) and conventional computer string sorting algorithm (strcmp):

<?php
$arr1 = $arr2 = array("pic1","pic2","pic10","pic01","pic100","pic20","pic30","pic200");
echo "Standard string comparison"."<br>";
usort($arr1,"strcmp");
print_r($arr1);
echo "<br>";
echo "Natural order string comparison"."<br>";
usort($arr2,"strnatcmp");
print_r($arr2);
?>

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PHP String Function