在PHP中，当使用explode（）; 如何在字符串中连续处理两个分隔符？ [关闭]

So; I'm exploding a card list string, the delimiter is " ; ".

One string can, for example, be " creature;;1;;;;;1;1;;;2 ".

This gives me an array with the length 5.

Another card is " creature;;3;;4;;2;3;2; "

I need arrays with the same length and the values at the same positions, so how do I achieve this?

Basically I want the explode to make an (empty) element in the array from ";;".

I hope you can understand my question, since it's not easy to explain!

Thanks for any help :)

patty

How is explode NOT working for you?

php > var_dump(explode(';', 'a;;b'));
array(3) {
  [0]=>
  string(1) "a"
  [1]=>
  string(0) ""
  [2]=>
  string(1) "b"
}

Note that the dumped array does have 3 elements, with the second one being empty, as expected.

Its the normal behaviour of the explode function

<?php
$string = "creature;;1;;;;;1;1;;;2";
$splitted = explode(";", $string);

var_dump($splitted);

$string = "creature;;3;;4;;2;3;2;";
$splitted = explode(";", $string);

var_dump($splitted);

Output is

 array(12) {
  [0]=>
  string(8) "creature"
  [1]=>
  string(0) ""
  [2]=>
  string(1) "1"
  [3]=>
  string(0) ""
  [4]=>
  string(0) ""
  [5]=>
  string(0) ""
  [6]=>
  string(0) ""
  [7]=>
  string(1) "1"
  [8]=>
  string(1) "1"
  [9]=>
  string(0) ""
  [10]=>
  string(0) ""
  [11]=>
  string(1) "2"
}
array(10) {
  [0]=>
  string(8) "creature"
  [1]=>
  string(0) ""
  [2]=>
  string(1) "3"
  [3]=>
  string(0) ""
  [4]=>
  string(1) "4"
  [5]=>
  string(0) ""
  [6]=>
  string(1) "2"
  [7]=>
  string(1) "3"
  [8]=>
  string(1) "2"
  [9]=>
  string(0) ""
}

explode in PHP:

explode splits a string into an array by a text delimiter. This is done by taking the area of the string between two characters matching the delimiter and pushing it to an array. Thus, if there are 2 delimiters right after each other, then an empty array entry is added (as other answers have stated). This is default, expected behavour of explode.

Array Processing:

If you want to get rid of all empty entries, you could do something like this:

$split = explode(";","creature;;1;;;;;1;1;;;2");
$final  = Array();
for ($i=0;$i<count($split);$i++) {
    if ($split[$i]!="") {
        array_push($final,$split[$i]);
    }
}

This is a basic example of array processing, and it works like so:

• First, we explode the string by the requested delimiter. We call the result $split.
• Next, we create a new array, which is empty. This is called $final.
• We then create a for loop, which iterates through every item in the array $split.
• The if statement checks if the entry is blank, if it isn't, then we push the item to the array $final.
• At the end of this, $final only contains the elements we want.