Comments on: PHP – count() vs. sizeOf() http://www.andreas-glaser.com/2008/08/19/php-count-vs-sizeof/ Development, Technology and such... Tue, 20 Jul 2010 08:44:59 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: buzzknow http://www.andreas-glaser.com/2008/08/19/php-count-vs-sizeof/comment-page-1/#comment-1567 buzzknow Mon, 12 Jul 2010 16:46:56 +0000 http://www.andreas-glaser.com/?p=65#comment-1567 i've read some test of both function and sizeof is the winner, but i've forgot the source i read :( regards i’ve read some test of both function and sizeof is the winner, but i’ve forgot the source i read :(

regards

]]> By: Anonymous http://www.andreas-glaser.com/2008/08/19/php-count-vs-sizeof/comment-page-1/#comment-1552 Anonymous Fri, 30 Apr 2010 07:13:47 +0000 http://www.andreas-glaser.com/?p=65#comment-1552 Jelle said: 2010.02.05 23:24 @Pablo, it doesn’t really matter whether you use an array with 1 million elements or an array with 10 elements. Since the function is called a million times, any time difference would add up and eventually show up in the results. @sunny ghosh, sizeof() and count() are exactly the same functions. They refer to the same piece of C code in the php source. This means that both count() and sizeof() will return the same values. So what you said about the differences between count() and sizeof() is not true. Here is some proof dumping the return values of both count() and sizeof(): Return values count() vs sizeof(): Filled array: int(100000) int(100000) Empty array: int(0) int(0) Non array: int(1) int(1) Non existing variable: int(0) int(0) As you can see, all values are the same. Lastly @ Andreas, You suggest to use count() instead of sizeof(), but since both functions have the same speed there is no real argument as to why using count(). count() isn’t exactly the “official name”, since both functions are aliases. In my opinion it’s up to the programmer which function he uses. For example, someone who used C a lot would rather use sizeof() instead of count(). Jelle said: 2010.02.05 23:24

@Pablo,
it doesn’t really matter whether you use an array with 1 million elements or an array with 10 elements. Since the function is called a million times, any time difference would add up and eventually show up in the results.

@sunny ghosh,
sizeof() and count() are exactly the same functions. They refer to the same piece of C code in the php source. This means that both count() and sizeof() will return the same values. So what you said about the differences between count() and sizeof() is not true. Here is some proof dumping the return values of both count() and sizeof():

Return values count() vs sizeof():
Filled array:
int(100000)
int(100000)
Empty array:
int(0)
int(0)
Non array:
int(1)
int(1)
Non existing variable:
int(0)
int(0)

As you can see, all values are the same.

Lastly @ Andreas,
You suggest to use count() instead of sizeof(), but since both functions have the same speed there is no real argument as to why using count(). count() isn’t exactly the “official name”, since both functions are aliases.

In my opinion it’s up to the programmer which function he uses. For example, someone who used C a lot would rather use sizeof() instead of count().

]]> By: Jelle http://www.andreas-glaser.com/2008/08/19/php-count-vs-sizeof/comment-page-1/#comment-1542 Jelle Fri, 05 Feb 2010 23:24:29 +0000 http://www.andreas-glaser.com/?p=65#comment-1542 @Pablo, it doesn't really matter whether you use an array with 1 million elements or an array with 10 elements. Since the function is called a million times, any time difference would add up and eventually show up in the results. @sunny ghosh, sizeof() and count() are exactly the same functions. They refer to the same piece of C code in the php source. This means that both count() and sizeof() will return the same values. So what you said about the differences between count() and sizeof() is not true. Here is some proof dumping the return values of both count() and sizeof(): Return values count() vs sizeof(): Filled array: int(100000) int(100000) Empty array: int(0) int(0) Non array: int(1) int(1) Non existing variable: int(0) int(0) As you can see, all values are the same. Lastly @ Andreas, You suggest to use count() instead of sizeof(), but since both functions have the same speed there is no real argument as to why using count(). count() isn't exactly the "official name", since both functions are aliases. In my opinion it's up to the programmer which function he uses. For example, someone who used C a lot would rather use sizeof() instead of count(). @Pablo,
it doesn’t really matter whether you use an array with 1 million elements or an array with 10 elements. Since the function is called a million times, any time difference would add up and eventually show up in the results.

@sunny ghosh,
sizeof() and count() are exactly the same functions. They refer to the same piece of C code in the php source. This means that both count() and sizeof() will return the same values. So what you said about the differences between count() and sizeof() is not true. Here is some proof dumping the return values of both count() and sizeof():

Return values count() vs sizeof():
Filled array:
int(100000)
int(100000)
Empty array:
int(0)
int(0)
Non array:
int(1)
int(1)
Non existing variable:
int(0)
int(0)

As you can see, all values are the same.

Lastly @ Andreas,
You suggest to use count() instead of sizeof(), but since both functions have the same speed there is no real argument as to why using count(). count() isn’t exactly the “official name”, since both functions are aliases.

In my opinion it’s up to the programmer which function he uses. For example, someone who used C a lot would rather use sizeof() instead of count().

]]> By: sunny ghosh http://www.andreas-glaser.com/2008/08/19/php-count-vs-sizeof/comment-page-1/#comment-1536 sunny ghosh Tue, 22 Dec 2009 16:34:26 +0000 http://www.andreas-glaser.com/?p=65#comment-1536 ya sizeof() its an alias for count(), bt the difference is dat count() provides a bit more information dan sizeof() i)if da variable is an array,count returns da number of elements which sizeof even does. ii)if da variable is nt an array,count returns 1 which sizeof even doesnt return. iii)if a variable doesnt exists,count returns 0 which sizeof even doesnt return. ya sizeof() its an alias for count(), bt the difference is dat count() provides a bit more information dan sizeof()
i)if da variable is an array,count returns da number of elements which sizeof even does.
ii)if da variable is nt an array,count returns 1 which sizeof even doesnt return.
iii)if a variable doesnt exists,count returns 0 which sizeof even doesnt return.

]]> By: Andreas Glaser http://www.andreas-glaser.com/2008/08/19/php-count-vs-sizeof/comment-page-1/#comment-1530 Andreas Glaser Wed, 21 Oct 2009 09:31:08 +0000 http://www.andreas-glaser.com/?p=65#comment-1530 Yeah you're right your way would be more accurate but would also end up with more or less the same result, since sizeOF is an alias :) Thanks for your nice reply (i will improve my little script soon). Greetings Yeah you’re right your way would be more accurate but would also end up with more or less the same result, since sizeOF is an alias :)
Thanks for your nice reply (i will improve my little script soon).

Greetings

]]> By: Pablo http://www.andreas-glaser.com/2008/08/19/php-count-vs-sizeof/comment-page-1/#comment-1529 Pablo Tue, 20 Oct 2009 19:18:32 +0000 http://www.andreas-glaser.com/?p=65#comment-1529 I think your test is not so correct, is not the number of times you call count or sizeof, is the size of the array what has to be big. Making an array of 1M elements and testing count and sizeof is better. Cheers, Pablo Pazos Gutierrez http://pablo.swp.googlepages.com/ I think your test is not so correct, is not the number of times you call count or sizeof, is the size of the array what has to be big. Making an array of 1M elements and testing count and sizeof is better.

Cheers,
Pablo Pazos Gutierrez
http://pablo.swp.googlepages.com/

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