mb_substr_count

(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

mb_substr_count — Count the number of substring occurrences

function mb_substr_count(string $haystack, string $needle, ?string $encoding = null): int

Counts the number of times the needle substring occurs in the haystack string.

haystack: The string being checked.
needle: The string being found.
encoding: Il parametro encoding è la codifica dei caratteri. Se è omesso, verrà utilizzata la codifica interna.

The number of times the needle substring occurs in the haystack string.

As of PHP 8.0.0, a ValueError is thrown if encoding is an invalid encoding. Prior to PHP 8.0.0, an E_WARNING was emitted instead.

Versione	Descrizione
8.0.0	`encoding` is nullable now.
8.0.0	Now throws a ValueError if `encoding` is an invalid encoding. Previously, an `E_WARNING` was emitted and `false` was returned.

Example #1 mb_substr_count() example

<?php
echo mb_substr_count("This is a test", "is"); // prints out 2
?>

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