How do I delete an index of an array? How do I append a value to the array? If a value exists in the array and I want to append the same value again, would the array list the value twice or just once? If I explode a string 'hello world' is index 0 'hello' and index 1 'world'?
Also, this isnt about arrays, but strings. There is a replace procedure, but I want to delete instead of replace. For example, if the string is 'Hello World!' I want to delete everything after 'World'. Please help, thank you.


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