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Manual: max
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max

(PHP3 , PHP4 )

max -- trova il valore massimo

Descrizione

mixed max (mixed arg1, mixed arg2, mixed argn)

max() restituisce il numericamente più grande dei valori dati come parametro.

Se il primo parametro è un array, max() restituisce il massimo dei valori di tale array. Se il primo parametro è un integer, string o double, si ha bisogno almeno di due parametri e max() restituisce il maggiore di tali valori. Si può confrontare un numero illimitato di valori.

Se uno o più valori sono double, tutti i valori saranno considerati come double, e verrà restituito un double. Se nessuno dei valori è double, tutti verranno considerati come integer, e verrà restituito un integer.


User Contributed Notes: max

craigsrubbish@hotmail.com
03-Aug-2000 04:18
I came across a problem that the description above doesn't seem to make clear.

In my implementation of php3 and mysql, if you have 3 database values such as (6,8,50), the max will come out as "8", as it seems to have trouble with integers that aren't the same length.

in my case this was solved by making the database field ZEROFILL'ed, so the values compared came out as (0006,0008,0050).

But I'm sure someone has a smarter way!

t.hochgreve@pm-konzept.de
07-Aug-2000 08:16
to craigsrubbish: sure fetching values from a mysql database returns strings, whether a field is numeric or not. When sending the fetched values to max() they will be compared as if they were strings: max ('2','8','50'). To compare numbers, cast the values to integer: max((int)'2', (int)'8', (int)'50).

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