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An explanation of how to use php str_getcsv to parse a string into an array

jacklove
jackloveOriginal
2018-06-09 09:12:311870browse

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);?>

输出:

Array(
    [0] => 1
    [1] => 2
    [2] => 3)

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);?>

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;)

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)


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 = "\\" ]]] )

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);?>

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)

本篇讲解了php str_getcsv把字符串解析为数组的使用方法,更多相关内容请关注php中文网。

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