函数超时的处理

register_shutdown_function   

Registers the function named by function to be executed when script processing is complete or when exit() is called. 

此函数可以重复注册，然后会依次调用 当发生致命性错误或者exit时都会调用此函数

 

error_reporting(0);

register_shutdown_function ( 'handleShutdown' );

function  handleShutdown (){
    $error  =  error_get_last ();
    
    // 根据错误信息，判断是否是超时了
    if ( $error  &&  strpos ( $error [ 'message' ], 'Maximum exec' )!== false ) 
    {
        echo 'handle time out';
    }
}

set_time_limit(2);

sleep(3);