mb_output_handler

Function name: mb_output_handler()

Applicable version: PHP 4.0.6 and above

Function description: mb_output_handler() is a callback function that handles the output of multibyte character encoding.

usage:

1. Set mb_output_handler() as the callback function of the output buffer: ob_start('mb_output_handler');

2. Multi-byte character encoding is performed in the callback function: function mb_output_handler($buffer, $flags) { // Multi-byte character encoding is performed on $buffer// Return the processed $buffer }

parameter:

• $buffer: The output buffer content that needs to be processed.
• $flags: Optional parameter to specify the behavior of the callback function.

Return value: The processed output buffer content.

Example:

1. Use mb_output_handler() to perform multibyte character encoding:

   <?php // 设置 mb_output_handler() 为输出缓冲区的回调函数 ob_start('mb_output_handler'); // 输出包含多字节字符的内容 echo "你好，世界！"; // 回调函数中进行多字节字符编码的处理 function mb_output_handler($buffer, $flags) { // 将内容进行 UTF-8 编码 $buffer = mb_convert_encoding($buffer, 'UTF-8', 'auto'); return $buffer; } ?-->

2. Use mb_output_handler() to perform multibyte character encoding and specify the behavior of the callback function:

   <?php // 设置 mb_output_handler() 为输出缓冲区的回调函数，并指定回调函数的行为 ob_start('mb_output_handler', 0); // 输出包含多字节字符的内容 echo "こんにちは、世界！"; // 回调函数中进行多字节字符编码的处理，并将回调函数的行为设置为不使用缓冲区 function mb_output_handler($buffer, $flags) { // 将内容进行 Shift_JIS 编码 $buffer = mb_convert_encoding($buffer, 'Shift_JIS', 'auto'); return $buffer; } ?-->

In the above example, the mb_output_handler() function is used as a callback function for the output buffer. The content is encoded by multi-byte character before outputting the content to ensure that the output content is displayed correctly. The appropriate multibyte character encoding format can be selected as needed and the corresponding encoding process can be performed in the callback function.