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Structures in PHP

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Structures in PHP

Postby tmpdev » Tue Jun 17, 2003 8:34 am

Hello there...

I am used to program in C and was thinking:

The keyword struct does not exist (at least not exact) I have
been looking through the PHP-helpfile and have not find anything like that (beside class)

Now my problem is really that I want to use binary-mode files. That is creating several post of exact the same size. And the helpfile is hard on me cause I cant figure it out. So you guys here have helped me in the past so :)

(I am not at home with my PHP-editor right now so I cant test if there is exact matches. If there is a exact match of a function dont say anything about it cause I will find out for myself... else please tell me the replacement procedure for that func)

The things I am looking for is:

struct type
sizeof()

Hmm, perhaps (if sizeof() exists) there is only to use class instead of struct? Well well...
:?
// TMPDEV
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Postby Joan Garnet » Tue Jun 17, 2003 11:23 am

sizeof() does exist, but it's about array length, not the actual size in memory.

struct ¿?¿? what is it for in C ??
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Postby Redcircle » Tue Jun 17, 2003 2:35 pm

if you are trying to find out the size of a file use filesize()
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Postby tmpdev » Fri Jul 04, 2003 11:37 pm

Well, struct in C was used for making own types of variables such as exampel a car-structure which would be made up of three parts, car licenseplate, yearmodel and type:

struct Car {
int yearmodel;
char licenseplate[7];
char type[20];

};

this way I could save Different cars in a binaryfile and find the
correct post by using sizeof(struct Car) multiplied by the nr the car has... and then copy the memory there to a temp Car struct which I then could use as I pleased. My problem is that this way makes it easier to keep track of a complicated object,
with different datatypes. But perhaps this can be done just with arrays, still the problem is I need fixed string sizes, even if the word is smaller. That is if I want to save and recover from a file...

Please need help on this one!
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