php csv to array (csv to array) method and code-PHP Tutorial-php.cn

php csv to array (csv to array) method and code

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Release： 2016-07-25 08:59:39

Original

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//ini_set('memory_limit', '-1'); // If the csv is relatively large, you can add it.
/*
* $file : csv file
* $csvDataArr : header of csv table, eg: arary('name','sex','age') or array(0,1,2)
* $specialhtml : whether do you want to convert special characters to html entities ?
* $removechar : which type do you want to remove special characters in array keys, manual or automatical ?
* edit http://bbs.it-home.org
*/
class csv_to_array
{
private $counter;
private $handler;
private $length;
private $file;
private $seprator;
private $specialhtml;
private $removechar = 'manual';
private $csvDataArr;
private $csvData = array();
function __construct($file = '', $csvDataArr = '', $specialhtml = true, $length = 1000, $seprator = ',')
{
$this->counter = 0;
$this->length = $length;
$this->file = $file;
$this->seprator = $seprator;
$this->specialhtml = $specialhtml;
$this->csvDataArr = is_array($csvDataArr) ? $csvDataArr : array();
$this->handler = fopen($this->file, "r");
}
function get_array()
{
$getCsvArr = array();
$csvDataArr = array();
while(($data = fgetcsv($this->handler, $this->length, $this->seprator)) != FALSE)
{
$num = count($data);
$getCsvArr[$this->counter] = $data;
$this->counter++;
}
if(count($getCsvArr) > 0)
{
$csvDataArr = array_shift($getCsvArr);
if($this->csvDataArr) $csvDataArr = $this->csvDataArr;
$counter = 0;
foreach($getCsvArr as $csvValue)
{
$totalRec = count($csvValue);
for($i = 0; $i < $totalRec ; $i++)
{
$key = $this->csvDataArr ? $csvDataArr[$i] : $this->remove_char($csvDataArr[$i]);
if($csvValue[$i]) $this->csvData[$counter][$key] = $this->put_special_char($csvValue[$i]);
}
$counter++;
}
}
return $this->csvData;
}
function put_special_char($value)
{
return $this->specialhtml ? str_replace(array('&','" ','\'','<','>'),array('&','"',''','<','>'),$value) : $value;
}
function remove_char($value)
{
$result = $this->removechar == 'manual' ? $this->remove_char_manual($value) : $this->remove_char_auto($value);
return str_replace(' ','_',trim($result));
}
private function remove_char_manual($value)
{
return str_replace(array('&','"','\'','<','>','(',')','%'),'',trim($value));
}
private function remove_char_auto($str,$x=0)
{
$x==0 ? $str=$this->make_semiangle($str) : '' ;
eregi('[[:punct:]]',$str,$arr);
$str = str_replace($arr[0],'',$str);
return eregi('[[:punct:]]',$str) ? $this->remove_char_auto($str,1) : $str;
}
private function make_semiangle($str)
{
$arr = array('０' => '0', '１' => '1', '２' => '2', '３' => '3', '４' => '4',
'５' => '5', '６' => '6', '７' => '7', '８' => '8', '９' => '9',
'Ａ' => 'A', 'Ｂ' => 'B', 'Ｃ' => 'C', 'Ｄ' => 'D', 'Ｅ' => 'E',
'Ｆ' => 'F', 'Ｇ' => 'G', 'Ｈ' => 'H', 'Ｉ' => 'I', 'Ｊ' => 'J',
'Ｋ' => 'K', 'Ｌ' => 'L', 'Ｍ' => 'M', 'Ｎ' => 'N', 'Ｏ' => 'O',
'Ｐ' => 'P', 'Ｑ' => 'Q', 'Ｒ' => 'R', 'Ｓ' => 'S', 'Ｔ' => 'T',
'Ｕ' => 'U', 'Ｖ' => 'V', 'Ｗ' => 'W', 'Ｘ' => 'X', 'Ｙ' => 'Y',
'Ｚ' => 'Z', 'ａ' => 'a', 'ｂ' => 'b', 'ｃ' => 'c', 'ｄ' => 'd',
'ｅ' => 'e', 'ｆ' => 'f', 'ｇ' => 'g', 'ｈ' => 'h', 'ｉ' => 'i',
'ｊ' => 'j', 'ｋ' => 'k', 'ｌ' => 'l', 'ｍ' => 'm', 'ｎ' => 'n',
'ｏ' => 'o', 'ｐ' => 'p', 'ｑ' => 'q', 'ｒ' => 'r', 'ｓ' => 's',
'ｔ' => 't', 'ｕ' => 'u', 'ｖ' => 'v', 'ｗ' => 'w', 'ｘ' => 'x',
'ｙ' => 'y', 'ｚ' => 'z',
'（' => '(', '）' => ')', '〔' => '[', '〕' => ']', '【' => '[',
'】' => ']', '〖' => '[', '〗' => ']', '“' => '[', '”' => ']',
'‘' => '[', '’' => ']', '｛' => '{', '｝' => '}', '《' => '<',
'》' => '>',
'％' => '%', '＋' => '+', '—' => '-', '－' => '-', '～' => '-',
'：' => ':', '。' => '.', '、' => ',', '，' => '.', '、' => '.',
'；' => ',', '？' => '?', '！' => '!', '…' => '-', '‖' => '|',
'”' => '"', '’' => '`', '‘' => '`', '｜' => '|', '〃' => '"',
'　' => ' ','＄'=>'$','＠'=>'@','＃'=>'#','＾'=>'^','＆'=>'&','＊'=>'*');
return strtr($str, $arr);
}
function __destruct(){
fclose($this->handler);
}
}
// example:
$csv = new csv_to_array('user.csv');
echo "
```
"; print_r($csv->get_array()); echo "
```
";
?>

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2. Use general functions

function csv_to_array($csv)
{
$len = strlen($csv);
$table = array();
$cur_row = array();
$cur_val = "";
$state = "first item";
for ($i = 0; $i < $len; $i++)
{
//sleep(1000);
$ch = substr($csv,$i,1);
if ($state == "first item")
{
if ($ch == '"') $state = "we're quoted hea";
elseif ($ch == ",") //empty
{
$cur_row[] = ""; //done with first one
$cur_val = "";
$state = "first item";
}
elseif ($ch == "n")
{
$cur_row[] = $cur_val;
$table[] = $cur_row;
$cur_row = array();
$cur_val = "";
$state = "first item";
}
elseif ($ch == "r") $state = "wait for a line feed, if so close out row!";
else
{
$cur_val .= $ch;
$state = "gather not quote";
}
}
elseif ($state == "we're quoted hea")
{
if ($ch == '"') $state = "potential end quote found";
else $cur_val .= $ch;
}
elseif ($state == "potential end quote found")
{
if ($ch == '"')
{
$cur_val .= '"';
$state = "we're quoted hea";
}
elseif ($ch == ',')
{
$cur_row[] = $cur_val;
$cur_val = "";
$state = "first item";
}
elseif ($ch == "n")
{
$cur_row[] = $cur_val;
$table[] = $cur_row;
$cur_row = array();
$cur_val = "";
$state = "first item";
}
elseif ($ch == "r") $state = "wait for a line feed, if so close out row!";
else
{
$cur_val .= $ch;
$state = "we're quoted hea";
}
}
elseif ($state == "wait for a line feed, if so close out row!")
{
if ($ch == "n")
{
$cur_row[] = $cur_val;
$cur_val = "";
$table[] = $cur_row;
$cur_row = array();
$state = "first item";
}
else
{
$cur_row[] = $cur_val;
$table[] = $cur_row;
$cur_row = array();
$cur_val = $ch;
$state = "gather not quote";
}
}
elseif ($state == "gather not quote")
{
if ($ch == ",")
{
$cur_row[] = $cur_val;
$cur_val = "";
$state = "first item";
}
elseif ($ch == "n")
{
$cur_row[] = $cur_val;
$table[] = $cur_row;
$cur_row = array();
$cur_val = "";
$state = "first item";
}
elseif ($ch == "r") $state = "wait for a line feed, if so close out row!";
else $cur_val .= $ch;
}
}
return $table;
}
//pass a csv string, get a php array
// example:
$arr = csv_to_array(file_get_contents('user.csv'));
echo "
```
"; print_r($arr);   echo "
```
"
?>

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或者

$arrCSV = array();
// Open the CSV
if (($handle = fopen("user.csv", "r")) !==FALSE) {
// Set the parent array key to 0
$key = 0;
// While there is data available loop through unlimited times (0) using separator (,)
while (($data = fgetcsv($handle, 0, ",")) !==FALSE) {
// Count the total keys in each row
$c = count($data);
//Populate the array
for ($x=0;$x<$c;$x++) $arrCSV[$key][$x] = $data[$x];
$key++;
} // end while
// Close the CSV file
fclose($handle);
} // end if
echo "
```
"; print_r($arrCSV); echo "
```
";
?>

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至于哪种更好用，看自己的实际需求与个人爱好了，实际工作中csv转array的需求还是不少，建议大家多练习，多掌握。