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Manual: max
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max

(PHP3 , PHP4 )

max -- La plus grande valeur.

Description

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

max() retourne la la plus grande valeur numérique parmi les valeurs passées en paramètre.

Si le premier paramètre est un tableau, max() retourne la plus grande valeur de ce tableau. Si le premier paramètre est un entier, une chaîne ou un double, max() requiert au moins deux paramètres, et retournera alors le plus grand d'entre eux. Le nombre d'argument est alors illimité.

Si au moins une valeur est de type double, elle seront toutes traitées comme des doubles, et un double sera retourné. Si aucune valeur n'est de type double, elles seront traitées comme des entiers, et un entier sera retourné.


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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