 $rand() function?, how does it work? |
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  Mar 19 2005, 17:18
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#1
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Member Group: Members Posts: 4 Joined: 19-March 05 Member No.: 1655 Mp3tag Version: 2.29  |
Hi,
First, thanks to the creators of mp3tag for such an excellent product. Goodbye Tag & Rename! I have a question about the $rand() function. Is there a way to get it to return a random number within certain parameters? For example, I want to randomize the song order in a folder so i'd like to make an action to replace the track number with $rand($num_tracks) or something. However $rand() does not appear to work like a typical rand() function... it just returns an integer > 0 with no upper limit, it seems. Usually in another language one would use something like int(rand($seed) * $upper_limit), but that's not an option here... or am I missing something? The help file doesn't want to tell me anything more. Thanks again!  0x20 |
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Mar 19 2005, 17:57
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#2
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 Moderator Group: Full Members Posts: 2275 Joined: 15-June 03 From: Bad Herrenalb Member No.: 496 Mp3tag Version: 2.55a |
QUOTE (0x20 @ Mar 19 2005, 05:18 PM) Hi, First, thanks to the creators of mp3tag for such an excellent product. Goodbye Tag & Rename! I have a question about the $rand() function. Is there a way to get it to return a random number within certain parameters? For example, I want to randomize the song order in a folder so i'd like to make an action to replace the track number with $rand($num_tracks) or something. However $rand() does not appear to work like a typical rand() function... it just returns an integer > 0 with no upper limit, it seems. Usually in another language one would use something like int(rand($seed) * $upper_limit), but that's not an option here... or am I missing something? The help file doesn't want to tell me anything more. Thanks again! 0x20  As far as I know, you cannot set the boundaries for $rand(). If you want to randomize the track order in a folder and change the track numbers, click on the very first column (where the icons are) and then use the track numbering wizard [CTRL+K].
-------------------- There are 10 types of people in this world: those who understand binary, and those who don't.
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Mar 19 2005, 18:00
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#3
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Member Group: Members Posts: 4 Joined: 19-March 05 Member No.: 1655 Mp3tag Version: 2.29 |
QUOTE (Sebastian Mares @ Mar 19 2005, 11:57 AM) As far as I know, you cannot set the boundaries for $rand(). If you want to randomize the track order in a folder and change the track numbers, click on the very first column (where the icons are) and then use the track numbering wizard [CTRL+K]. Cool, that is also good to know. I have a bigger idea for a script that could really use a $rand() with limits, but i can use that tip now. thanks Sebastian! |
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Mar 19 2005, 18:03
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#4
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 Moderator Group: Moderators Posts: 5503 Joined: 4-September 03 From: Germany Member No.: 201 Mp3tag Version: 2.55a |
Try $num($left($rand(),2),2) as solution.
Do you also get the same numeres from the $rand() funktion? 41 18467 6334 26500 19169 15724... -------------------- |
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Mar 19 2005, 20:05
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#5
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Member Group: Members Posts: 4 Joined: 19-March 05 Member No.: 1655 Mp3tag Version: 2.29 |
QUOTE (dano @ Mar 19 2005, 12:03 PM) Try $num($left($rand(),2),2) as solution. Do you also get the same numeres from the $rand() funktion? 41 18467 6334 26500 19169 15724... that's a good idea, but still you could end up with track numbers higher than the total tracks in the album. i suppose it's not a big deal... 
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Mar 30 2010, 18:08
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#6
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 Member Group: Full Members Posts: 4129 Joined: 26-May 06 From: Wuppertal, Germany, Planet Earth Member No.: 3194 Mp3tag Version: 2.54 |
QUOTE (0x20 @ Mar 19 2005, 18:18) ... I have a question about the $rand() function. Is there a way to get it to return a random number within certain parameters? ... Following example returns random numbers from 0 to 10: $mod($rand(),11) Following example returns random numbers from 1 to 11: $add($mod($rand(),11),1) Following example returns random numbers from 5 to 15: $add($mod($rand(),11),5) Following example returns random numbers from -5 to 5: $sub($mod($rand(),11),5) DD.20100330.1907.CEST -------------------- * Beyond that, don't ask, when you don't know what to do with the answer. *
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