PHP Learning Note 33 "Custom error Handler"

<?PHP//custom Error handler//$errorno error number//$errmes error message//These two parameters are required    functionMy_error ($errorno,$errmes)    {      Echo"<font size= ' 5 ' color= ' Red ' >$errorno</font><br/> "; Echo"The error message is:$errmes"; }        //The Set_error_handler processor must be rewritten    Set_error_handler("My_error",e_warning);//e_warning Error Level    $fp=fopen("A.txt", "R"); Echo"<br/>"; Echo"<br/>"; Echo"<br/>"; Echo"<br/>"; Echo"<br/>"; //method should be defined in front//Custom error handler processing method    functionMy_error2 ($errno,$errmes)    {       Echo"Error number:".$errno; }        //changing the method of error trigger invocation    Set_error_handler("My_error2",e_user_warning);//The error level here typically includes the user        $age=700; if($age>120)    {      //trigger_error ("Input age is too large");//Error trigger [Invoke system default mode]     Trigger_error("Input age is too large",e_user_warning); }    ?>

PHP Learning Note 33 "Custom error Handler"