php str_getcsv implements the method of parsing strings into arrays

墨辰丷
Release: 2023-03-27 18:40:01
Original
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下面小编就为大家带来一篇php str_getcsv把字符串解析为数组的实现方法。小编觉得挺不错的,现在就分享给大家,也给大家做个参考。一起跟随小编过来看看吧

php根据定界符把字符串解析为数组一般使用explode方法实现

例如:使用”,”为定界符解析字符串为数组

<?php
$str = &#39;1,2,3&#39;;
$arr = explode(&#39;,&#39;, $str);
print_r($arr);
?>
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输出:

Array
(
  [0] => 1
  [1] => 2
  [2] => 3
)
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但对于一些较复杂的字符串,例如csv格式,使用explode不能得出想要的结果,而使用正则较麻烦。

例如:

<?php
$str = "中国,广东省,广州市,天河区,&#39;113.329884,23.154799&#39;,1,&#39;2016-01-01 12:00:00&#39;,&#39;1,2,3,4,5,6&#39;";
$arr = explode(&#39;,&#39;, $str);
print_r($arr);
?>
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输出:

Array
(
  [0] => 中国
  [1] => 广东省
  [2] => 广州市
  [3] => 天河区
  [4] => &#39;113.329884
  [5] => 23.154799&#39;
  [6] => 1
  [7] => &#39;2016-01-01 12:00:00&#39;
  [8] => &#39;1
  [9] => 2
  [10] => 3
  [11] => 4
  [12] => 5
  [13] => 6&#39;
)
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实际上想得到的结果是:

Array
(
  [0] => 中国
  [1] => 广东省
  [2] => 广州市
  [3] => 天河区
  [4] => 113.329884,23.154799
  [5] => 1
  [6] => 2016-01-01 12:00:00
  [7] => 1,2,3,4,5,6
)
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php提供了str_getcsv方法,可以把字符串作为csv格式来处理,这样方便解析为数组。

str_getcsv 解析csv字符串为数组

array str_getcsv ( string $input [, string $delimiter = "," [, string $enclosure = &#39;"&#39; [, string $escape = "\\" ]]] )
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参数:

input 待解析的字符串

delimiter 设定字段界定符(仅单个字符)

enclosure 设定字段包裹字符(仅单个字符)

escape 设置转义字符(仅单个字符),默认为反斜线(\)

实例:

<?php
$str = "中国,广东省,广州市,天河区,&#39;113.329884,23.154799&#39;,1,&#39;2016-01-01 12:00:00&#39;,&#39;1,2,3,4,5,6&#39;";
$arr = str_getcsv($str, &#39;,&#39;, "&#39;");
print_r($arr);
?>
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输出:

Array
(
  [0] => 中国
  [1] => 广东省
  [2] => 广州市
  [3] => 天河区
  [4] => 113.329884,23.154799
  [5] => 1
  [6] => 2016-01-01 12:00:00
  [7] => 1,2,3,4,5,6
)
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以上就是本文的全部内容,希望对大家的学习有所帮助。


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