get associative array for str_replace

[pedalpete]

I'm trying to read an associative array into str_replace, but keep getting a undefined index responses, even though the index is visibly in the array.

here's the code

    foreach($gSplit as $gString) {
 $genrenum = str_replace($gString, $y[$gString], $gString);
 echo $genrenum.'<br />';
    echo $gString;
    }
}
 

and the array

[Acoustic] => 1 [Alternative] => 2 [Ambient] => 4 [Bluegrass] => 8 [Blues] => 16 [Christian] => 32 [Classical] => 64 [Country] => 128 [Down-tempo] => 256 [Electronica] => 512 [Emo] => 1024 [Folk] => 2048 [Funk] => 4096 [Garage] => 8192 [Gospel] => 16384 [Grunge] => 32768 [Hip Hop] => 65536 [House] => 131072 [Indie] => 262144 [Industrial] => 524288 [Jazz] => 1048576 [Jungle] => 2097152 [Latin] => 4194304 [Lounge] => 8388608 [Metal] => 16777216 [Pop] => 33554432 [Punk] => 67108864 [R&B] => 134217728 [Rap] => 268435456 [Reggae] => 536870912 [Rock] => 1073741824 [Roots Music] => 2147483648 [Salsa] => 4294967296 [Screamo] => 8589934592 [Ska] => 17179869184 [Soul] => 34359738368 [Swing] => 68719476736 [Techno] => 137438953472 [Trance] => 274877906944
 

and the errors I am getting are

Notice: Undefined index: Pop in C:\EasyPHP 2.0b1\www\admin\genremath.php on line 63
 
Notice: Undefined index: Powerpop in C:\EasyPHP 2.0b1\www\admin\genremath.php on line 63
 
Notice: Undefined index: Indie in C:\EasyPHP 2.0b1\www\admin\genremath.php on line 63
 

Clearly the index is in the array.

Any ideas?

[Atli]

Hi.

If the array $y does indeed look like what you posted those errors make no sense. There must be something else causing this.
Are you absolutely sure that this is what the array $y looks like? Could you be running an out of date version of the file on your test server?

Also, your usage of the str_replace function doesn't make much sense to me, unless it is only intended as a test.
What I mean is; this line:

$genrenum = str_replace($gString, $y[$gString], $gString);
 

Could just as well be replaced with this:

$genrenum = $y[$gString];
 

[pedalpete]

Thanks Atli

I'm pretty sure the array is exactly as i display it, as I've put

print_r($y); before my foreach statement.

However, you are absolutely correct on the $genrenum = $y['$gstring']; I can't believe i over complicated it like that.

the code is now...

print_r($gSplit);
$gSplit = array_unique($gSplit);
print_r($y);
    foreach($gSplit as $gString) {
 $genrenum = $y[$gString];
 echo $genrenum.'<br />';
    echo $gString;
    }
 

the output is still not working, I get this result where the first array is the genre types put into an array, and the second array is the array of all genre types. This is the output copied and pasted from the browser.

Pop | Powerpop | Indie
Array ( [0] => Pop [1] => Powerpop [2] => Indie )
Array ( [Acoustic] => 1 [Alternative] => 2 [Ambient] => 4 [Bluegrass] => 8 [Blues] => 16 [Christian] => 32 [Classical] => 64 [Country] => 128 [Down-tempo] => 256 [Electronica] => 512 [Emo] => 1024 [Folk] => 2048 [Funk] => 4096 [Garage] => 8192 [Gospel] => 16384 [Grunge] => 32768 [Hip Hop] => 65536 [House] => 131072 [Indie] => 262144 [Industrial] => 524288 [Jazz] => 1048576 [Jungle] => 2097152 [Latin] => 4194304 [Lounge] => 8388608 [Metal] => 16777216 [Pop] => 33554432 [Punk] => 67108864 [R&B] => 134217728 [Rap] => 268435456 [Reggae] => 536870912 [Rock] => 1073741824 [Roots Music] => 2147483648 [Salsa] => 4294967296 [Screamo] => 8589934592 [Ska] => 17179869184 [Soul] => 34359738368 [Swing] => 68719476736 [Techno] => 137438953472 [Trance] => 274877906944 )
Notice: Undefined index: Pop in C:\EasyPHP 2.0b1\www\admin\genremath.php on line 64
 
Pop
Notice: Undefined index: Powerpop in C:\EasyPHP 2.0b1\www\admin\genremath.php on line 64
 
Powerpop
Notice: Undefined index: Indie in C:\EasyPHP 2.0b1\www\admin\genremath.php on line 64
 

[Atli]

Ok, I see.

Try using the trim() function on the index before using it. Seeing as the array containing the indexes is called gSplit, I'm assuming it is created by splitting a string into smaller pieces?

This will trim any leading or trailing white-spaces from the text before it is used:

$genrenum = $y[trim($gString)]
 

[pedalpete]

the simplest answers are always the best. I had trim running on the first array, but sadly not on the second.

Thanks Atli.