PHP | substr_compare() Function

Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP substr_compare() Function.

The substr_compare() Function is used to compare two strings from a specified start position.

Note: This PHP function is binary-safe and optionally case-sensitive.

syntax

Following below is the syntax to use this function -

substr_compare(string1,string2,startpos,length,case)

READ: PHP | strtr() Function

Parameter Details

Sr.No	Parameters & Description
1	string1 It is used to first string to compare
2	string2 It is used to second string to compare
3	startpos It specifies where to start string comparing in string1
4	length It specifies length of a string
5	case The boolean value that specifies where to perform a case-sensitive compare

Return Value

This PHP function returns:

• 0 if the two strings are equal.

• <0 if string1 (from starting position) is less than string2.

• >0 if string1 (from starting position) is greater than string2.

If length is equal or greater than the length of string1, this function returns FALSE.

Example

Try out the example below -

<?php
   echo substr_compare("READ WRITE","WRITE",8);
?>

Output

When the above code is executed, it will produce the following result -

-3

READ: PHP | strtoupper() Function

Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we will be studying about the PHP substr_count() Function.

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