警告：sprintf（）......参数太少

Question

这是错误的行

sprintf( __( "You must have a <a target='_new' href='%s'>PayPal Sandbox</a> account setup before using this feature.", APP_TD ), 'http://developer.paypal.com/' ),

Answer 1

sprintf( __( 'You must have a <a target="_new" href="%s">PayPal Sandbox</a> account setup before using this feature.', APP_TD ), 'http://developer.paypal.com/' ),

您可能使用单/双引号。