我試圖將ob_start添加到我的Wordpress插件中的類中，如下所示：class ObStart { public static function callback($buffer){ return $buffer; } public static function add_ob_start(){ ob_start("callback"); } public static function flush_ob_end(){ ob_end_flush(); }}add_action('init', array( 'ObStart', 'add_ob_start' ) );add_action('wp_footer', array( 'ObStart', 'flush_ob_end' ) );這似乎不起作用，而是導(dǎo)致此錯(cuò)誤：Warning: ob_start(): function 'callback' not found or invalid function name in <b>\wp-content\plugins\timeline-plugin\obstart.php on line 8Notice: ob_start(): failed to create buffer in \wp-content\plugins\timeline-plugin\obstart.php on line 8Warning: Cannot modify header information - headers already sent by (output started at \wp-includes\formatting.php:5520) in \wp-includes\pluggable.php on line 1251Warning: Cannot modify header information - headers already sent by (output started at \wp-includes\formatting.php:5520) in \wp-includes\pluggable.php</b> on line 1254是否可以讓ob_start在課堂上工作？如果是，我哪里出問題了？
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TA貢獻(xiàn)1812條經(jīng)驗(yàn) 獲得超5個(gè)贊
class Obstart
{
public static function callback($buffer)
{
return $buffer;
}
public static function add_ob_start()
{
global $buffer;
ob_start( self::callback($buffer) );
}
public static function flush_ob_end()
{
ob_end_flush();
}
}
add_action('init', array( 'Obstart', 'add_ob_start' ) );
add_action('wp_footer', array( 'Obstart', 'flush_ob_end' ) );
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