PHP STRSTR: How to Use the STRSTR Function

The PHP STRSTR function is a method for finding a given string or character within a larger string. Once STRSTR runs, it will return a portion of the string — either before or after the string that was being searched for.

STRSTR is frequently used to split apart strings so they can be properly formatted. STRSTR is a case-sensitive function that is most often used to split apart things like emails and proper names.

What is the PHP STRSTR function?

Before you begin, understanding the basics of PHP Functions is essential. The PHP STRSTR function is one of PHP’s methods for manipulating strings, including PHP string length, as it returns an abbreviated version of the string. STRSTR also returns a “false” if the string is not discovered at all—so it can determine whether a string is actually found inside of another string.

This is one of the most common PHP string functions, including PHP STRLEN and PHP CONCAT.

An example of the PHP STRSTR function

STRSTR is a fairly easy to use and fairly straightforward function. The PHP STRSTR function is defined as follows:

strstr(string $haystack, string $needle, bool $before_needle = false): string|false

Recommended Learning Platform course

PHP for Beginners – Become a PHP Master – CMS Project

Edwin Diaz | 900,000+ Students, Coding Faculty Solutions