PHP strnatcasecmp() Function

The strnatcasecmp() function is in-built function of PHP. It is used to compare two strings using a "natural order" algorithm. This function accepts two string as parameter and return integer value. It is similar to strnatcmp() function.

Note: This function strnatcasecmp() is case-insensitive.

Syntax:

Parameter	Description	Required/Optional
String1	Specify the first string to compare.	Required.
String2	Specify the second string to compare. It returns : 0 : if the two strings are equal <0 : if string1 is less than string2 >0 :I f string1 is greater than string2	Required.

Example 1

<?php
  echo "Your string is: Hello world!"," Hello world!";
  echo "<br>";
  echo "By using 'strnatcasecmp()' function: ".strnatcasecmp("Hello world!"," Hello world!");  
?>

Output:

Your string is: Hello world! Hello world!
By using 'strnatcasecmp()' function: 0

Example 2

<?php
  echo "Your string is: 2Hello world!","10Hello WORLD!";
  echo "<br>";
  echo "By using 'strnatcasecmp()' function: ".strnatcasecmp("2Hello world!","10Hello WORLD!");  
?>

Output:

Your string is: 2Hello world!10Hello WORLD!
By using 'strnatcasecmp()' function: -1

Example 3

<?php
  echo "Your string is: 10Hello world!","2Hello WORLD!";
  echo "<br>";
  echo "By using 'strnatcasecmp()' function: ".strnatcasecmp("10Hello world!","2Hello WORLD!");  
?>

Output:

Your string is: 10Hello world!2Hello WORLD!
By using 'strnatcasecmp()' function: 1

See Also

trim() : It is used to remove whitespace.
ltrim() : It is used to remove whitespace from the left side of a string.
rtrim() : It is used to remove whitespace from the right side of a string.

Reference:

http://php.net/manual/en/function.strnatcasecmp.php

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PHP strnatcasecmp() Function

Note: This function strnatcasecmp() is case-insensitive.

Syntax:

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