将php数组转换为csv字符串

时间：2013-05-03 06:00:26

标签： php csv multidimensional-array phone-number

我有几种方法可以从stackoverflow和google将php数组转换为csv字符串。但是我遇到麻烦，如果我想存储01727499452等手机号码，它会保存为没有前0值。 我目前正在使用这段代码： Convert array into csv

任何人都可以帮助我。

Array   

[1] => Array
    (
        [0] => Lalu ' " ; \\ Kumar
        [1] => Mondal
        [2] => 01934298345
        [3] => 
    )

[2] => Array
    (
        [0] => Pritom
        [1] => Kumar Mondal
        [2] => 01727499452
        [3] => Bit Mascot
    )

[3] => Array
    (
        [0] => Pritom
        [1] => Kumar Mondal
        [2] => 01711511149
        [3] => 
    )

[4] => Array
    (
        [0] => Raaz
        [1] => Mukherzee
        [2] => 01911224589
        [3] => Khulna University 06
    )

）

我的代码块：

function arrayToCsv( array $fields, $delimiter = ';', $enclosure = '"', $encloseAll = false, $nullToMysqlNull = false ) {
$delimiter_esc = preg_quote($delimiter, '/');
$enclosure_esc = preg_quote($enclosure, '/');

$outputString = "";
foreach($fields as $tempFields) {
    $output = array();
    foreach ( $tempFields as $field ) {
        if ($field === null && $nullToMysqlNull) {
            $output[] = 'NULL';
            continue;
        }

        // Enclose fields containing $delimiter, $enclosure or whitespace
        if ( $encloseAll || preg_match( "/(?:${delimiter_esc}|${enclosure_esc}|\s)/", $field ) ) {
            $field = $enclosure . str_replace($enclosure, $enclosure . $enclosure, $field) . $enclosure;
        }
        $output[] = $field." ";
    }
    $outputString .= implode( $delimiter, $output )."\r\n";
}
return $outputString; }

谢谢，

Pritom。

9 个答案:

答案 0 :(得分：21)

您可以使用str_putcsv功能：

if(!function_exists('str_putcsv'))
{
    function str_putcsv($input, $delimiter = ',', $enclosure = '"')
    {
        // Open a memory "file" for read/write...
        $fp = fopen('php://temp', 'r+');
        // ... write the $input array to the "file" using fputcsv()...
        fputcsv($fp, $input, $delimiter, $enclosure);
        // ... rewind the "file" so we can read what we just wrote...
        rewind($fp);
        // ... read the entire line into a variable...
        $data = fread($fp, 1048576);
        // ... close the "file"...
        fclose($fp);
        // ... and return the $data to the caller, with the trailing newline from fgets() removed.
        return rtrim($data, "\n");
    }
 }

 $csvString = '';
 foreach ($list as $fields) {
     $csvString .= str_putcsv($fields);
 }

关于GitHub的更多信息，这是由@johanmeiring创建的函数。

答案 1 :(得分：18)

这是你需要的吗？

$out = "";
foreach($array as $arr) {
    $out .= implode(",", $arr) . "\r\n";

}

它贯穿你的数组，在每个循环上创建一个新行，用“，”分隔数组值。

答案 2 :(得分：2)

你确定这些数字实际上是在没有前导零的情况下保存的吗？您是否在文本编辑器中查看了实际的CSV输出？

如果您刚刚在电子表格应用程序中打开了CSV文件，则很可能是电子表格将您的电话号码解释为数字值，并在显示时丢弃零。您通常可以通过更改特定列上的格式选项来修复电子表格中的内容。

答案 3 :(得分：0)

因为它是一个CSV而不是像JSON那样的东西，所以一切都将被读作一个字符串，所以只需将你的数字转换成一个字符串：

  • (string)$variable
  • strval($variable)（我更喜欢这里）
  • 与$variable . ''
    • 之类的空字符串连接

PHP的gettype()也是一种选择。您可以使用我描述的方法之一将每个字段输入到字符串中（即使它已经是一个字符串），或者您可以通过执行此操作来调出您之后的数字字段： < / p> 

if (gettype($field) == 'integer' || gettype($field) == 'double') {
    $field = strval($field); // Change $field to string if it's a numeric type
}

以下是添加

的完整代码 
function arrayToCsv( array $fields, $delimiter = ';', $enclosure = '"', $encloseAll = false, $nullToMysqlNull = false ) {
    $delimiter_esc = preg_quote($delimiter, '/');
    $enclosure_esc = preg_quote($enclosure, '/');

    $outputString = "";
    foreach($fields as $tempFields) {
        $output = array();
        foreach ( $tempFields as $field ) {
            // ADDITIONS BEGIN HERE
            if (gettype($field) == 'integer' || gettype($field) == 'double') {
                $field = strval($field); // Change $field to string if it's a numeric type
            }
            // ADDITIONS END HERE
            if ($field === null && $nullToMysqlNull) {
                $output[] = 'NULL';
                continue;
            }

            // Enclose fields containing $delimiter, $enclosure or whitespace
            if ( $encloseAll || preg_match( "/(?:${delimiter_esc}|${enclosure_esc}|\s)/", $field ) ) {
                $field = $enclosure . str_replace($enclosure, $enclosure . $enclosure, $field) . $enclosure;
            }
            $output[] = $field." ";
        }
        $outputString .= implode( $delimiter, $output )."\r\n";
    }
    return $outputString; 
}

答案 4 :(得分：0)

我使用此功能将php数组转换为csv。它也适用于多维数组。

public function array_2_csv($array) {
$csv = array();
foreach ($array as $item=>$val) {
if (is_array($val)) { 
    $csv[] = $this->array_2_csv($val);
    $csv[] = "\n";
} else {
    $csv[] = $val;
  }
 }
return implode(';', $csv);
}

答案 5 :(得分：0)

上面的函数并不完全正确，因为它认为\ n像一个元素，这不是我们想要的，因为每一行必须只用\ n分隔。所以更有效的代码是：

function array2csv($array, $delimiter = "\n") {
    $csv = array();
    foreach ($array as $item=>$val) 
    {
        if (is_array($val)) 
        { 
            $csv[] = $this->array2csv($val, ";");
        } 
        else 
        {
            $csv[] = $val;
        }
    }
    return implode($delimiter, $csv);
}

答案 6 :(得分：0)

这是一个通用性更高的解决方案。我实际上是在寻找一种为SQL批量插入创建字符串列表的方法。代码如下：

foreach ($rows as $row) {
    $string = toDelimitedString($row);
    // Now append it to a file, add line break, whatever the need may be
}

这是我最终添加到我的taket中的有用功能：

/**
 * Convert an array of strings to a delimited string. This function supports CSV as well as SQL output since
 * the quote character is customisable and the escaping behaviour is the same for CSV and SQL.
 *
 * Tests:
 *  echo toDelimitedString([], ',', '\'', true) . "\n";
 *  echo toDelimitedString(['A'], ',', '\'', true) . "\n";
 *  echo toDelimitedString(['A', 'B'], ',', '\'', true) . "\n";
 *  echo toDelimitedString(['A', 'B\'C'], ',', '\'', true) . "\n";
 *  echo toDelimitedString([], ',', '\'', true) . "\n";
 *  echo toDelimitedString(['A'], ',', '"', true) . "\n";
 *  echo toDelimitedString(['A', 'B'], ',', '"', true) . "\n";
 *  echo toDelimitedString(['A', 'B"C'], ',', '"', true) . "\n";
 *
 * Outputs:
 *  <Empty String>
 *  'A'
 *  'A','B'
 *  'A','B''C'
 *  <Empty String>
 *  "A"
 *  "A","B"
 *  "A","B""C"
 *
 * @param array $array A one-dimensional array of string literals
 * @param string $delimiter The character to separate string parts
 * @param string $quoteChar The optional quote character to surround strings with
 * @param bool $escape Flag to indicate whether instances of the quote character should be escaped
 * @return string
 */
function toDelimitedString(array $array, string $delimiter = ',', string $quoteChar = '"', bool $escape = true)
{
    // Escape the quote character, since it is somewhat expensive it can be suppressed
    if ($escape && !empty($quoteChar)) {
        $array = str_replace($quoteChar, $quoteChar . $quoteChar, $array);
    }

    // Put quotes and commas between all the values
    $values = implode($array, $quoteChar . $delimiter . $quoteChar);

    // Put first and last quote around the list, but only if it is not empty
    if (strlen($values) > 0) {
        $values = $quoteChar . $values . $quoteChar;
    }

    return $values;
}

答案 7 :(得分：0)

灵感来自@alexcristea的答案：

function array2csv($data, $delimiter = ',', $enclosure = '"', $escape_char = "\\")
{
    $f = fopen('php://memory', 'r+');
    foreach ($data as $item) {
        fputcsv($f, $item, $delimiter, $enclosure, $escape_char);
    }
    rewind($f);
    return stream_get_contents($f);
}

$list = array (
    array('aaa', 'bbb', 'ccc', 'dddd'),
    array('123', '456', '789'),
    array('"aaa"', '"bbb"')
);
var_dump(array2csv($list));

答案 8 :(得分：0)

此实现不使用文件指针，不应无意中修改传递给它的任何数据，仅在需要时进行转义，类似于 fputcsv()（但没有 $escape_char 废话）：

function str_putcsv(array $fields, string $delimiter = ',', string $enclosure = '"') {
    $escs = [];
    foreach ($fields as $field) {
        $esc = (string) $field;
        if (
            false !== strpos($esc, $delimiter)
            || false !== strpos($esc, $enclosure)
        ) {
            $esc = $enclosure . strtr($esc, ["$enclosure" => "$enclosure$enclosure"]) . $enclosure;
        }
        $escs[] = $esc;
    }
    return implode($delimiter, $escs) . PHP_EOL;
}

如果您的 PHP 版本不支持 string 类型声明，请删除它们。

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