<?PHP
// 激活断言，并设置它为 quiet
assert_options(ASSERT_ACTIVE,1);
assert_options(ASSERT_WARNING,0);
assert_options(ASSERT_QUIET_EVAL,1);


// 设置回调函数
assert_options(ASSERT_CALLBACK,'my_assert_handler');

// 让一则断言失败
assert('MysqL_query("")');


//创建处理函数
function my_assert_handler($file,$line,$code)
{
    echo "error:
        File '$file'
        Line '$line'
        Code '$code'";
}