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Using Laravel for Advanced String Manipulation in PHP

Counting Occurrences of a Search String

Explore how to use Laravel's substrCount helper method to count the number of times a substring appears in a string. Understand parameter options like offset and length, and apply this to real-world tasks such as validating IP addresses, checking domain parts, and analyzing PHP namespaces within Laravel applications.

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The substrCount helper method

We can use the substrCount helper method to count the number of times a particular string appears in a value.

PHP
<?php
/**
 * Versions: Laravel 8, 9
 *
 * @return int
 */
public static function substrCount(
      string $haystack,
      string $needle,
         int $offset = 0,
    int|null $length = null
);

Applications can use this method to perform any of the following tasks (but are not limited to these): ...