将逗号分隔的字符串拆分为数组?

试试爆炸:

$myString = "9,admin@example.com,8";
$myArray = explode(',', $myString);
print_r($myArray);

输出:

Array
(
[0] => 9
[1] => admin@example.com
[2] => 8
)

$string = '9,admin@google.com,8';
$array = explode(',', $string);

对于更复杂的情况，你可能需要使用preg_split。

如果该字符串来自csv文件，我将使用fgetcsv()(或str_getcsv()，如果您有PHP V5.3)。这将允许您正确地解析引用的值。如果它不是csv， explode()应该是最好的选择。

explode在实际使用中有一些非常大的问题:

count(explode(',', null)); // 1 !!
explode(',', null); // [""] not an empty array, but an array with one empty string!
explode(',', ""); // [""]
explode(',', "1,"); // ["1",""] ending commas are also unsupported, kinda like IE8

这就是为什么我更喜欢preg_split

preg_split('@,@', $string, NULL, PREG_SPLIT_NO_EMPTY)

整个样板文件:

/** @brief wrapper for explode
* @param string|int|array $val string will explode. '' return []. int return string in array (1 returns ['1']). array return itself. for other types - see $as_is
* @param bool $as_is false (default): bool/null return []. true: bool/null return itself.
* @param string $delimiter default ','
* @return array|mixed
*/
public static function explode($val, $as_is = false, $delimiter = ',')
{
// using preg_split (instead of explode) because it is the best way to handle ending comma and avoid empty string converted to ['']
return (is_string($val) || is_int($val)) ?
preg_split('@' . preg_quote($delimiter, '@') . '@', $val, NULL, PREG_SPLIT_NO_EMPTY)
:
($as_is ? $val : (is_array($val) ? $val : []));
}

如果你想让你的部分包含逗号呢?好吧，引用它们。然后引号呢?把它们叠起来。换句话说:

part1,"part2,with a comma and a quote "" in it",part3

PHP提供了https://php.net/str_getcsv函数来解析字符串，就像它是CSV文件中的一行一样，可以与上面的行一起使用，而不是explode:

print_r(str_getcsv('part1,"part2,with a comma and a quote "" in it",part3'));
Array
(
[0] => part1
[1] => part2,with a comma and a quote " in it
[2] => part3
)

使用explosion()或preg_split()函数使用指定的分隔符拆分php中的字符串

// Use preg_split() function
$string = "123,456,78,000";
$str_arr = preg_split ("/\,/", $string);
print_r($str_arr);
  

// use of explode
$string = "123,46,78,000";
$str_arr = explode (",", $string);
print_r($str_arr);

@php
$data = $post->tags;
$sep_tag= explode(',', $data);
@endphp


@foreach ($sep_tag as $tag)
<li class="collection-item">\{\{ $tag}}</li>
@endforeach

//Re-usable function
function stringToArray($stringSeperatedCommas)
{
return collect(explode(',', $stringSeperatedCommas))->map(function ($string) {
return trim($string) != null ? trim($string) : null;
})->filter(function ($string) {
return trim($string) != null;
});
}


//Usage
$array = stringToArray('abcd, , dsdsd, dsds');
print($array);


//Result
{ "abcd", "dsdsd", "dsds" }