compare the values of two arrays

[misslois74]

im working on a script right now where in i would need to compare values of one array with another values from another array how will i go about the script for these.... thanks in advance.

 

[vacunita]

Well that's going to depend on exactly how you want to compare them?

This would check whether or not a value from one array exists in another, and if it doesn't it puts the value in a third array.

$array_difference=array_diff($array_one,$array_two);

http://www.php.net/manual/en/function.array-diff.php

However I'm not sure if that is what you want.





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Phil AKA Vacunita
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Ignorance is not necessarily Bliss, case in point:
Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown.

 

[jpadie]

there are a bunch of array functions that i find i never use. probably to my detriment. i'm never _quite_ sure how these abstracted functions (like array_diff) might work on edge cases. I'm sure they work fine and i should take the time, but somehow I always end up using something like a foreach loop with an empty, isset or in_array function in each loop iteration. Far from optimised compared with a pre-compiled alternative, but at least i know that they will work the way i want.

 

[misslois74]

well, actually what im trying to do is compare the field values from two tables, here is the scenario: i have a table which lists all the categories and another table which lists all the categories which is dynamically selected by a user now what i would like to happen is on the front end if a category is already listed the link for that category should be deactivated, any suggestion on how will i go about this?

 

[jpadie]

personally i didn't understand the explanation.

 

[misslois74]

thanks! for all the responses i have figured it out what to do with the problem