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

WBOY
Release: 2016-07-25 08:59:39
Original
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  1. //ini_set('memory_limit', '-1'); // If the csv is relatively large, you can add it.
  2. /*
  3. * $file : csv file
  4. * $csvDataArr : header of csv table, eg: arary('name','sex','age') or array(0,1,2)
  5. * $specialhtml : whether do you want to convert special characters to html entities ?
  6. * $removechar : which type do you want to remove special characters in array keys, manual or automatical ?
  7. * edit http://bbs.it-home.org
  8. */
  9. class csv_to_array
  10. {
  11. private $counter;
  12. private $handler;
  13. private $length;
  14. private $file;
  15. private $seprator;
  16. private $specialhtml;
  17. private $removechar = 'manual';
  18. private $csvDataArr;
  19. private $csvData = array();
  20. function __construct($file = '', $csvDataArr = '', $specialhtml = true, $length = 1000, $seprator = ',')
  21. {
  22. $this->counter = 0;
  23. $this->length = $length;
  24. $this->file = $file;
  25. $this->seprator = $seprator;
  26. $this->specialhtml = $specialhtml;
  27. $this->csvDataArr = is_array($csvDataArr) ? $csvDataArr : array();
  28. $this->handler = fopen($this->file, "r");
  29. }
  30. function get_array()
  31. {
  32. $getCsvArr = array();
  33. $csvDataArr = array();
  34. while(($data = fgetcsv($this->handler, $this->length, $this->seprator)) != FALSE)
  35. {
  36. $num = count($data);
  37. $getCsvArr[$this->counter] = $data;
  38. $this->counter++;
  39. }
  40. if(count($getCsvArr) > 0)
  41. {
  42. $csvDataArr = array_shift($getCsvArr);
  43. if($this->csvDataArr) $csvDataArr = $this->csvDataArr;
  44. $counter = 0;
  45. foreach($getCsvArr as $csvValue)
  46. {
  47. $totalRec = count($csvValue);
  48. for($i = 0; $i < $totalRec ; $i++)
  49. {
  50. $key = $this->csvDataArr ? $csvDataArr[$i] : $this->remove_char($csvDataArr[$i]);
  51. if($csvValue[$i]) $this->csvData[$counter][$key] = $this->put_special_char($csvValue[$i]);
  52. }
  53. $counter++;
  54. }
  55. }
  56. return $this->csvData;
  57. }
  58. function put_special_char($value)
  59. {
  60. return $this->specialhtml ? str_replace(array('&','" ','\'','<','>'),array('&','"',''','<','>'),$value) : $value;
  61. }
  62. function remove_char($value)
  63. {
  64. $result = $this->removechar == 'manual' ? $this->remove_char_manual($value) : $this->remove_char_auto($value);
  65. return str_replace(' ','_',trim($result));
  66. }
  67. private function remove_char_manual($value)
  68. {
  69. return str_replace(array('&','"','\'','<','>','(',')','%'),'',trim($value));
  70. }
  71. private function remove_char_auto($str,$x=0)
  72. {
  73. $x==0 ? $str=$this->make_semiangle($str) : '' ;
  74. eregi('[[:punct:]]',$str,$arr);
  75. $str = str_replace($arr[0],'',$str);
  76. return eregi('[[:punct:]]',$str) ? $this->remove_char_auto($str,1) : $str;
  77. }
  78. private function make_semiangle($str)
  79. {
  80. $arr = array('0' => '0', '1' => '1', '2' => '2', '3' => '3', '4' => '4',
  81. '5' => '5', '6' => '6', '7' => '7', '8' => '8', '9' => '9',
  82. 'A' => 'A', 'B' => 'B', 'C' => 'C', 'D' => 'D', 'E' => 'E',
  83. 'F' => 'F', 'G' => 'G', 'H' => 'H', 'I' => 'I', 'J' => 'J',
  84. 'K' => 'K', 'L' => 'L', 'M' => 'M', 'N' => 'N', 'O' => 'O',
  85. 'P' => 'P', 'Q' => 'Q', 'R' => 'R', 'S' => 'S', 'T' => 'T',
  86. 'U' => 'U', 'V' => 'V', 'W' => 'W', 'X' => 'X', 'Y' => 'Y',
  87. 'Z' => 'Z', 'a' => 'a', 'b' => 'b', 'c' => 'c', 'd' => 'd',
  88. 'e' => 'e', 'f' => 'f', 'g' => 'g', 'h' => 'h', 'i' => 'i',
  89. 'j' => 'j', 'k' => 'k', 'l' => 'l', 'm' => 'm', 'n' => 'n',
  90. 'o' => 'o', 'p' => 'p', 'q' => 'q', 'r' => 'r', 's' => 's',
  91. 't' => 't', 'u' => 'u', 'v' => 'v', 'w' => 'w', 'x' => 'x',
  92. 'y' => 'y', 'z' => 'z',
  93. '(' => '(', ')' => ')', '〔' => '[', '〕' => ']', '【' => '[',
  94. '】' => ']', '〖' => '[', '〗' => ']', '“' => '[', '”' => ']',
  95. '‘' => '[', '’' => ']', '{' => '{', '}' => '}', '《' => '<',
  96. '》' => '>',
  97. '%' => '%', '+' => '+', '—' => '-', '-' => '-', '~' => '-',
  98. ':' => ':', '。' => '.', '、' => ',', ',' => '.', '、' => '.',
  99. ';' => ',', '?' => '?', '!' => '!', '…' => '-', '‖' => '|',
  100. '”' => '"', '’' => '`', '‘' => '`', '|' => '|', '〃' => '"',
  101. ' ' => ' ','$'=>'$','@'=>'@','#'=>'#','^'=>'^','&'=>'&','*'=>'*');
  102. return strtr($str, $arr);
  103. }
  104. function __destruct(){
  105. fclose($this->handler);
  106. }
  107. }
  108. // example:
  109. $csv = new csv_to_array('user.csv');
  110. echo "
    "; print_r($csv->get_array()); echo "
    ";
  111. ?>
复制代码

2. Use general functions

  1. function csv_to_array($csv)
  2. {
  3. $len = strlen($csv);
  4. $table = array();
  5. $cur_row = array();
  6. $cur_val = "";
  7. $state = "first item";
  8. for ($i = 0; $i < $len; $i++)
  9. {
  10. //sleep(1000);
  11. $ch = substr($csv,$i,1);
  12. if ($state == "first item")
  13. {
  14. if ($ch == '"') $state = "we're quoted hea";
  15. elseif ($ch == ",") //empty
  16. {
  17. $cur_row[] = ""; //done with first one
  18. $cur_val = "";
  19. $state = "first item";
  20. }
  21. elseif ($ch == "n")
  22. {
  23. $cur_row[] = $cur_val;
  24. $table[] = $cur_row;
  25. $cur_row = array();
  26. $cur_val = "";
  27. $state = "first item";
  28. }
  29. elseif ($ch == "r") $state = "wait for a line feed, if so close out row!";
  30. else
  31. {
  32. $cur_val .= $ch;
  33. $state = "gather not quote";
  34. }
  35. }
  36. elseif ($state == "we're quoted hea")
  37. {
  38. if ($ch == '"') $state = "potential end quote found";
  39. else $cur_val .= $ch;
  40. }
  41. elseif ($state == "potential end quote found")
  42. {
  43. if ($ch == '"')
  44. {
  45. $cur_val .= '"';
  46. $state = "we're quoted hea";
  47. }
  48. elseif ($ch == ',')
  49. {
  50. $cur_row[] = $cur_val;
  51. $cur_val = "";
  52. $state = "first item";
  53. }
  54. elseif ($ch == "n")
  55. {
  56. $cur_row[] = $cur_val;
  57. $table[] = $cur_row;
  58. $cur_row = array();
  59. $cur_val = "";
  60. $state = "first item";
  61. }
  62. elseif ($ch == "r") $state = "wait for a line feed, if so close out row!";
  63. else
  64. {
  65. $cur_val .= $ch;
  66. $state = "we're quoted hea";
  67. }
  68. }
  69. elseif ($state == "wait for a line feed, if so close out row!")
  70. {
  71. if ($ch == "n")
  72. {
  73. $cur_row[] = $cur_val;
  74. $cur_val = "";
  75. $table[] = $cur_row;
  76. $cur_row = array();
  77. $state = "first item";
  78. }
  79. else
  80. {
  81. $cur_row[] = $cur_val;
  82. $table[] = $cur_row;
  83. $cur_row = array();
  84. $cur_val = $ch;
  85. $state = "gather not quote";
  86. }
  87. }
  88. elseif ($state == "gather not quote")
  89. {
  90. if ($ch == ",")
  91. {
  92. $cur_row[] = $cur_val;
  93. $cur_val = "";
  94. $state = "first item";
  95. }
  96. elseif ($ch == "n")
  97. {
  98. $cur_row[] = $cur_val;
  99. $table[] = $cur_row;
  100. $cur_row = array();
  101. $cur_val = "";
  102. $state = "first item";
  103. }
  104. elseif ($ch == "r") $state = "wait for a line feed, if so close out row!";
  105. else $cur_val .= $ch;
  106. }
  107. }
  108. return $table;
  109. }
  110. //pass a csv string, get a php array
  111. // example:
  112. $arr = csv_to_array(file_get_contents('user.csv'));
  113. echo "
    "; print_r($arr);   echo "
    "
  114. ?>
复制代码

或者

  1. $arrCSV = array();
  2. // Open the CSV
  3. if (($handle = fopen("user.csv", "r")) !==FALSE) {
  4. // Set the parent array key to 0
  5. $key = 0;
  6. // While there is data available loop through unlimited times (0) using separator (,)
  7. while (($data = fgetcsv($handle, 0, ",")) !==FALSE) {
  8. // Count the total keys in each row
  9. $c = count($data);
  10. //Populate the array
  11. for ($x=0;$x<$c;$x++) $arrCSV[$key][$x] = $data[$x];
  12. $key++;
  13. } // end while
  14. // Close the CSV file
  15. fclose($handle);
  16. } // end if
  17. echo "
    "; print_r($arrCSV); echo "
    ";
  18. ?>
复制代码

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。



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