Null array values appearing :(

[Meep3D]

I am currently writing a parser that will read in a data file and convert it to a PHP array.  It works great, except I am getting constant null values littered through the array, and I don't see how they got in there in the first place, let alone how to get rid of them (which would be fine).  They seem to occur when joining arrays, but I just can't pin down where!  :(

They basically look like "[] => ".  If anyone knows where they come from, or how to get rid of them, I would be appreciative!

I'll post the full code if you think it'll help - I am hoping it's a common easy fix/mistake though.

[code]
Array
(
    [Zandalar Tribe] => Array
        (
            [Value] => 0:3000
            [AtWar] => 0
            [Standing] => Neutral
        )

    [] =>
    [Darkmoon Faire] => Array
        (
            [Value] => 55:3000
            [AtWar] => 0
            [Standing] => Neutral
        )

)
[/code]

[.josh]

...and a print_r of your array is supposed to help us out...how? What happened to the part where you said you were going to post some actual code?

[Meep3D]

[quote author=Crayon Violent link=topic=123271.msg509245#msg509245 date=1169321748]
...and a print_r of your array is supposed to help us out...how? What happened to the part where you said you were going to post some actual code?
[/quote]
I thought it may be a common issue.  I can't even remove them from the array afterwards.  It calls itself recursively and adds the result onto the current wokring array until a full one is built and passed back by the original instance of the program.  I think the problem is somewhere around that area.

Here's the code.  matchBrace () returns the position of the matching { } brace so I can filter out blocks.  Apologies for the lack of comments and code quality.

[code]
/*
Read & Parse bank data string - Pass text, returns array.
*/
function parseStatement ( $statement ) {

$literalString = false;
$addChar = true;
$doubleDash = false;
$singleDash = false;

$currentString = '';
$variableString = '';
$valueString = '';

$arrayData = array ();
$arrayCount = 0;
$braceArray = array ();

for ( $counter = 0; $counter < strlen ( $statement ); $counter ++ ) {

$char = substr ( $statement, $counter, 1 );
$addChar = true;

#
# Avoid literal strings.
#
if ( $char == '"' ) {
$addChar = false;
$literalString = !$literalString;
}

if ( $char == '-' && !$literalString ) {

$addChar = false;

if ( $singleDash == true ) {
$doubleDash = true;
$singleDash = false;
} else {
$singleDash = true;
}
}



if ( $char == '[' && !$literalString ) {
$addChar = false;
$squareQuote = true;
}

if ( $char == ']' && !$literalString ) {
$addChar = false;
$squareQuote = false;

if ( $doubleDash ) {
$currentString = '';
$doubleDash = false;
}
}

if ( $char == '=' && !$literalString ) {
$addChar = false;
$variableString = trim ( $currentString );
$currentString = '';
}

if ( $char == ',' && !$literalString ) {
$addChar = false;
$arrayData[$variableString] = trim ( $currentString );
$variableString = '';
$currentString = '';
}

if ( $char == '{' && !$literalString ) {
$endCounter = $this->matchBrace ( $statement, $counter + 1 );
$length = $endCounter - $counter;
$braceString = substr ( $statement, $counter + 1, $length - 1 );

# echo "<p>Brace $variableString ( $arrayCount ) = ( $counter to $endCounter = $length ): $braceString</p>";

$counter = $endCounter;
$braceArray = $this->parseStatement ( $braceString );

# Check if there is a name for the array/element
if ( $variableString ) {

echo "<pre><hr/>";
print_r ( $braceArray );

$arrayData[$variableString] = $braceArray;

print_r ( $arrayData );
$variableString = '';
} else {
$arrayData[$arrayCount] = $braceArray;
$arrayCount++;
}

$addChar = false;
}

if ( $char == '}' && !$literalString ) {
$addChar = false;
}

if ( $addChar ) $currentString .= $char;
}

return $arrayData;
}
[/code]

[kenrbnsn]

What does the input data look like? Please post a sample.

Ken

[Meep3D]

Here's the top bit.  It's quite a large file but this is enough to reproduce the error...

[code]

rpgoCPpref = {
["enabled"] = true,
["debug"] = false,
["questsfull"] = false,
["tooltipshtml"] = true,
["tooltip"] = true,
["lite"] = true,
["scan"] = {
["inventory"] = true,
["talents"] = false,
["honor"] = true,
["reputation"] = true,
["spells"] = false,
["pet"] = false,
["equipment"] = true,
["professions"] = false,
["mail"] = false,
["skills"] = true,
["quests"] = false,
["bank"] = true,
},
["ver"] = 20001,
["fixicon"] = true,
["talentsfull"] = true,
["fixtooltip"] = true,
["fixcolor"] = true,
["button"] = true,
["reagentfull"] = true,
["fixquantity"] = true,
}
[/code]

The full code for the entire class is here...

[code]
<?php

class scanStatement {

var $items = array();

function scanStatement ( $statementFile ) {

$statement = $this->fileContents ( $statementFile );

for ( $counter = 0; $counter < 30; $counter++ ) { # Trim off exciting characters.
$statement = str_replace ( chr($counter), "", $statement );
}

$this->items = $this->parseStatement ( $statement );
}

/*
Read & Parse bank data string - Pass text, returns array.
*/
function parseStatement ( $statement ) {

$literalString = false;
$addChar = true;
$doubleDash = false;
$singleDash = false;

$currentString = '';
$variableString = '';
$valueString = '';

$arrayData = array ();
$arrayCount = 0;
$braceArray = array ();

for ( $counter = 0; $counter < strlen ( $statement ); $counter ++ ) {

$char = substr ( $statement, $counter, 1 );
$addChar = true;

#
# Avoid literal strings.
#
if ( $char == '"' ) {
$addChar = false;
$literalString = !$literalString;
}

if ( $char == '-' && !$literalString ) {

$addChar = false;

if ( $singleDash == true ) {
$doubleDash = true;
$singleDash = false;
} else {
$singleDash = true;
}
}

if ( $char == '[' && !$literalString ) {
$addChar = false;
$squareQuote = true;
}

if ( $char == ']' && !$literalString ) {
$addChar = false;
$squareQuote = false;

if ( $doubleDash ) {
$currentString = '';
$doubleDash = false;
}
}

if ( $char == '=' && !$literalString ) {
$addChar = false;
$variableString = trim ( $currentString );
$currentString = '';
}

if ( $char == ',' && !$literalString ) {
$addChar = false;
$arrayData[$variableString] = trim ( $currentString );
$variableString = '';
$currentString = '';
}

if ( $char == '{' && !$literalString ) {
$endCounter = $this->matchBrace ( $statement, $counter + 1 );
$length = $endCounter - $counter;
$braceString = substr ( $statement, $counter + 1, $length - 1 );

$counter = $endCounter;
$braceArray = $this->parseStatement ( $braceString );

# Check if there is a name for the array/element
if ( $variableString ) {
$arrayData[$variableString] = $braceArray;
$variableString = '';
} else {
$arrayData[$arrayCount] = $braceArray;
$arrayCount++;
}

$addChar = false;
}

if ( $char == '}' && !$literalString ) {
$addChar = false;
}

if ( $addChar ) $currentString .= $char;
}

return $arrayData;
}



/*
Returns matching brace position in string
*/
function matchBrace ( $string, $startpos = 1, $type = '{}' ) {

$startChar = substr ( $type, 0, 1 );
$endChar = substr ( $type, 1, 1 );
$literalString = false;
$endCount = 0;
$indentLevel = 1;

for ( $counter = $startpos; $counter < strlen ( $string ); $counter++ ) {

$char = substr ( $string, $counter, 1 );
$readMode = true;

# Parse single quotes.
if ( $char == '"' ) {
$literalString = !$literalString;
$readMode = true;
}

# Increase Indent
if ( !$literalString && ( $char == $startChar ) )
$indentLevel++;

# Decrease Indent
if ( !$literalString && ( $char == $endChar ) )
$indentLevel--;

# Check if to drop out of loop
if ( $indentLevel < 1 ) {
$endCount = $counter;
break;
}
}

if ( $endCount == 0 ) {
echo "0 endCount in matchBrace.  Correcting.";
$endCount = $startpos + strlen ( $string );
}

return $endCount;
}



/*
Return contents of a file
*/
function fileContents ( $filename ) {
$file = fopen ( $filename, "r" );
$data = fread ( $file, filesize ( $filename ) );
fclose ( $file );
return ( $data );
}
}
?>
[/code]

You just need to pass it the directory/filename that the input is in, and then read the $this->items array when its done.

thx.