Questions about "call to a member function Execute () on a non-object" appear in PHP

"Call to a member function Execute () on a Non-object" appears in PHP

There is no way, not to the fine, today when using PHP+ADODB for database operations, "call to a member function Execute () on a non-object" error. For a while, I finally know that the global variables are used in PHP custom functions, but we do not declare them at the beginning of the function with the global statement. PHP uses variables that are not declared, so when I use the global variable I want in the function, I actually create a local variable with the same name by default, so it's normal to have an error. Hey, global a bit, next time, you also remember Oh ~

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