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SplFileObject::setCsvControl

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

SplFileObject::setCsvControlSet the delimiter, enclosure and escape character for CSV

说明

public SplFileObject::setCsvControl(string $separator = ",", string $enclosure = "\"", string $escape = "\\"): void

Sets the delimiter, enclosure and escape character for parsing CSV fields.

参数

separator

可选的 separator 参数,设置字段分隔符(仅一个单字节字符)。

enclosure

可选的 enclosure 参数,设置字段环绕符(仅一个单字节字符)。

escape

可选的 escape 参数,设置转义字符(最多一个单字节字符)。空字符串("")禁用所有的转义机制。

注意: Usually an enclosure character is escaped inside a field by doubling it; however, the escape character can be used as an alternative. So for the default parameter values "" and \" have the same meaning. Other than allowing to escape the enclosure character the escape character has no special meaning; it isn't even meant to escape itself.

警告

escape 被设置为非空字符串("")时, 可能导致生成的 CSV 不符合 » RFC 4180 的要求, 或者无法通过 PHP CSV 函数的往返处理。 escape 的默认值是 "\\",因此建议显式地将其设置为空字符串。 默认值将在未来的 PHP 版本中更改,不早于 PHP 9.0。

返回值

没有返回值。

更新日志

版本 说明
7.4.0 The escape parameter now also accepts an empty string to disable the proprietary escape mechanism.

示例

示例 #1 SplFileObject::setCsvControl() example

<?php
$file
= new SplFileObject("data.csv");
$file->setFlags(SplFileObject::READ_CSV);
$file->setCsvControl('|');
foreach (
$file as $row) {
list (
$fruit, $quantity) = $row;
// Do something with values
}
?>

Contents of data.csv

<?php
apples|20
bananas|14
cherries|87
?>

参见

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