php script returns without stopping

# Terminating script execution refers to telling the PHP engine through a statement that other statements after this statement do not need to be executed.

PHP provides three ways to terminate script execution: return, die, exit (Recommended learning: PHP video tutorial)

return: Exit at this point. If it is in a function, it means exiting the function. If it is in a script, it means the script stops executing.

return: The return of the function is the return function call Where, the return of the script is returned to the place where the script is included.

demo13_stop.php

##Based on the above possibilities, so the PHP configuration file (project configuration file: Database connection information, etc.), use the above method

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