PHP strcoll() Function (original) (raw)

Last Updated : 11 Jul, 2025

The strcoll() is an inbuilt function in PHP and is used to compare two strings. This function is case-sensitive which points that capital and small cases will be treated differently, during a comparison. This function compares two strings and tells us that whether the first string is greater or smaller than the second string or equals to the second string. Syntax:

strcoll($string1, $string2)

**Parameters:**The function accepts two mandatory string parameters which are described below.

1. $string1: This parameter refers to the first string to be used in the comparison.
2. $string2: This parameter refers to the second string to be used in the comparison.

Return Value: The function returns a random integer value depending on the condition of match, which is given by:

• Returns 0 if the strings are equal.
• Returns a negative value (<0), if string1islesserthanstring1 is lesser than string1islesserthanstring2.
• Returns a positive value (>0) if string2islesserthanstring2 is lesser than string2islesserthanstring1.

Examples:

Input : string1="geeksforgeeks"string1 = "geeks for geeks" string1="geeksforgeeks"string2="geeks for geeks" Output : 0

Input : string1="striver"string1 = "striver" string1="striver"string2="raj" Output : 1

Below programs illustrate the use of strcoll() function:Program 1: The below program demonstrates the return value when two equal strings are passed

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Output:

0

Program 2: The below program demonstrates the return value when string1 is greater than string2

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Output:

1

Program 3: The below program demonstrates the return value when string2 is greater than string1

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Output:

-13

Reference:https://www.php.net/manual/en/function.strcoll.php