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<UConverter::setSubstCharsUConverter::transcode>
^UConverterLast updated: Mon, 26 Oct 2026

UConverter::toUCallback

(PHP 5 >= 5.5.0, PHP 7, PHP 8, PECL >= 3.0.0a1)

UConverter::toUCallback — Default "to" callback function

Description

public function UConverter::toUCallback(
    int $reason,
    string $source,
    string $codeUnits,
    int &$error
): string|int|array|null

Warning

This function is currently not documented; only its argument list is available.

Parameters

reason

source

codeUnits

error

Return Values


<UConverter::setSubstCharsUConverter::transcode>
^UConverterLast updated: Mon, 26 Oct 2026