PHP | substr_compare() Function

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)


Parameter Details

Sr.NoParameters & 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


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.

Feel free to ask your questions where necessary and we will attend to them as soon as possible. If this tutorial was helpful to you, you can use the share button to share this tutorial.

Follow us on our various social media platforms to stay updated with our latest tutorials. You can also subscribe to our newsletter in order to get our tutorials delivered directly to your emails.

Thanks for reading and bye for now.