PDF 函数
PHP Manual

PDF_utf32_to_utf16

(PECL pdflib >= Unknown future)

PDF_utf32_to_utf16Convert string from UTF-32 to UTF-16

说明

string PDF_utf32_to_utf16 ( resource $pdfdoc , string $utf32string , string $ordering )

Converts a string from UTF-32 format to UTF-16.


PDF 函数
PHP Manual