php编程实现获取excel文档内容的代码实例

;data, SMALL_BLOCK_DEPOT_BLOCK_POS);
$this->rootStartBlock = GetInt4d($this->data, ROOT_START_BLOCK_POS);
$this->extensionBlock = GetInt4d($this->data, EXTENSION_BLOCK_POS);
$this->numExtensionBlocks = GetInt4d($this->data, NUM_EXTENSION_BLOCK_POS);
/*
echo $this->numBigBlockDepotBlocks." ";
echo $this->sbdStartBlock." ";
echo $this->rootStartBlock." ";
echo $this->extensionBlock." ";
echo $this->numExtensionBlocks." ";
*/
//echo "sbdStartBlock = $this->sbdStartBlockn";
$bigBlockDepotBlocks = array();
$pos = BIG_BLOCK_DEPOT_BLOCKS_POS;
// echo "pos = $pos";
$bbdBlocks = $this->numBigBlockDepotBlocks;
if ($this->numExtensionBlocks != 0) {
$bbdBlocks = (BIG_BLOCK_SIZE - BIG_BLOCK_DEPOT_BLOCKS_POS)/4;
}
for ($i = 0; $i < $bbdBlocks; $i++) {
$bigBlockDepotBlocks[$i] = GetInt4d($this->data, $pos);
$pos += 4;
}
for ($j = 0; $j < $this->numExtensionBlocks; $j++) {
$pos = ($this->extensionBlock + 1) * BIG_BLOCK_SIZE;
$blocksToRead = min($this->numBigBlockDepotBlocks - $bbdBlocks, BIG_BLOCK_SIZE / 4 - 1);
for ($i = $bbdBlocks; $i < $bbdBlocks + $blocksToRead; $i++) {
$bigBlockDepotBlocks[$i] = GetInt4d($this->data, $pos);
$pos += 4;
}
$bbdBlocks += $blocksToRead;
if ($bbdBlocks < $this->numBigBlockDepotBlocks) {
$this->extensionBlock = GetInt4d($this->data, $pos);
}
}
// var_dump($bigBlockDepotBlocks);
// readBigBlockDepot
$pos = 0;
$index = 0;
$this->bigBlockChain = array();
for ($i = 0; $i < $this->numBigBlockDepotBlocks; $i++) {
$pos = ($bigBlockDepotBlocks[$i] + 1) * BIG_BLOCK_SIZE;
//echo "pos = $pos";
for ($j = 0 ; $j < BIG_BLOCK_SIZE / 4; $j++) {
$this->bigBlockChain[$index] = GetInt4d($this->data, $pos);
$pos += 4 ;
$index++;
}
}
//var_dump($this->bigBlockChain);
//echo ''=====2'';
// readSmallBlockDepot();
$pos = 0;
$index = 0;
$sbdBlock = $this->sbdStartBlock;
$this->smallBlockChain = array();
while ($sbdBlock != -2) {
$pos = ($sbdBlock + 1) * BIG_BLOCK_SIZE;
for ($j = 0; $j < BIG_BLOCK_SIZE / 4; $j++) {
$this->smallBlockChain[$index] = GetInt4d($this->data, $pos);
$pos += 4;
$index++;
}
$sbdBlock = $this->bigBlockChain[$sbdBlock];
}
// readData(rootStartBlock)
$block = $this->rootStartBlock;
$pos = 0;
$this->entry = $this->__readData($block);
/*
while ($block != -2) {
$pos = ($block + 1) * BIG_BLOCK_SIZE;
$this->entry = $this->entry.substr($this->data, $pos, BIG_BLOCK_SIZE);
$block = $this->bigBlockChain[$block];
}
*/
//echo ''===''.$this->entry."===";
$this->__readPropertySets();
}
function __readData($bl) {
$block = $bl;
$pos = 0;
$data = '''';
while ($block != -2) {
$pos = ($block + 1) * BIG_BLOCK_SIZE;
$data = $data.substr($this->data, $pos, BIG_BLOCK_SIZE);
//echo "pos = $pos data=$datan";
$block = $this->bigBlockChain[$block];
}
return $data;
}
function __readPropertySets(){
$offset = 0;
//var_dump($this->entry);
while ($offset < strlen($this->entry)) {
$d = substr($this->entry,