php explode string to array

Explode string into array with no empty elements?

PHP’s explode function returns an array of strings split on some provided substring. It will return empty strings when there are leading, trailing, or consecutive delimiters, like this:

Is there some different function or option or anything that would return everything except the empty strings?

13 Answers 13

$exploded = preg_split(‘@/@’, ‘1/2//3/’, NULL, PREG_SPLIT_NO_EMPTY);

array_filter will remove the blank fields, here is an example without the filter:

You’ll get all values that resolve to «false» filtered out.

This also works, but does mess up the array indexes unlike preg_split. Some people might like it better than having to declare a callback function to use array_filter.

It doesn’t mess up the indexes:

Here is a solution that should output a newly indexed array.

While fairly similar to some other suggestion, this implementation has the benefit of generic use. For arrays with non-string elements, provide a typed empty value as the second argument.

With an optional filter argument..

Turning array_deflate into a way of processing choice elements and removing them from your array. Also nicer is to turn the if statement into a comparison function that is also passed as an argument in case you get fancy.

array_inflate being the reverse, would take an extra array as the first parameter which matches are pushed to while non-matches are filtered.

Thus providing an ideal algorithm for the world’s educational problems. Aaand I’ll stop there before I tweak this into something else..

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PHP explode in array

I was wondering is it possible to convert the following array:

Without creating any loops?

3 Answers 3

From the PHP Manual:

Also, when you are dealing with Dates, the right way to do is as follows:

The simple way, using loops is to use a foreach() :

This is the most simplest looping way I can think of considering the index to be anything.

Input:

Output

WARNING: this is a good solution only if you are sure that the date format does not change, in other words the first 10 characters must contain the date.

Praveen Kumar’s answer is probably the better solution but there is a way to do with what wouldn’t really been seen as a loop. instead you use recursion

How this code works is that with the function we explode the array at the index provided by the function parameter and add this to our returning array. Then we check if there is a value set at the next index which is +1 of the index we passed into the function. If it exists then we call the function again with the new index with the same array and delimiter. We then merge the results of this with our returner array and then return that.

However, with this one should be careful of nest level errors where you excursively call a function too many times, like looking into the reflection of a mirror in a mirror.

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PHP: Split string into array, like explode with no delimiter

I have a string such as:

and need to split EACH character into an array.

I for the hell of it tried:

How would I come across this? I can’t see any method off hand, especially just a function

9 Answers 9

str_split takes an optional 2nd param, the chunk length (default 1), so you can do things like:

You can also get at parts of your string by treating it as an array:

What are you trying to accomplish? You can access characters in a string just like an array:

str_split can do the trick. Note that strings in PHP can be accessed just like a chars array, in most cases, you won’t need to split your string into a «new» array.

Here is an example that works with multibyte ( UTF-8 ) strings.

The above example will output:

If you want to split the string, it’s best to use:

When you have delimiter, which separates the string, you can try,

Where you can pass the delimiter in the first variable inside the explode such as:

will actuall work pretty fine, BUT if you want to preserve the special characters in that string, and you want to do some manipulation with them, THAN I would use

because for some of mine personal uses, it has been shown to be more reliable when there is an issue with special characters

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PHP метод explode для разбиения строки с тремя примерами

Метод PHP explode используется для разбиения строки на заданное число подстрок.

Синтаксис метода

Пример использования PHP метода explode :

Пример использования explode для разбиения номера телефона

В этом примере мы объявили строковую переменную и присвоили ей номер телефона следующего формата:

После этого применили метод explode для разбиения строки с помощью дефиса ( тире ) в качестве разделителя. Возвращенный массив строк присвоили массиву.

Затем использовали цикл fогеасh для отображения значений элементов массива, которые являются подстроками номера телефона. Поскольку параметр limit не указан, весь номер телефона будет разбит на три подстроки:

Посмотреть демо и код

Пример с пробелом в качестве разделителя

В этом примере PHP explode переноса строки использован пробел в качестве разделителя. Для примера возьмем это строку:

This is explode tutorial that enables string split in PHP.

Наконец, применили функцию count() для вывода количества подстрок в массиве:

Посмотреть демо и код

Пример с параметром limit

Это пример, описанный выше, за исключением того, что здесь мы использовали параметр limit для указания количества разбиений в строке. Ниже показана строка, которая была использована:

This is explode tutorial that enables string split in PHP.

В PHP explode примере, когда мы использовали пробел в качестве разделителя, было возвращено всего 10 подстрок. На этот раз с помощью параметра limit было определено 5 разбиений:

Посмотреть демо и код

Для чего нужен метод explode

Метод explode ( PHP split ) используется для разбиения заданной строки. Допустим, что веб-форма принимает телефонный номер с кодом страны и области в следующем формате:

Нам нужно отделить код страны и области, которые разделены дефисом. Для разбиения телефонного номера можно воспользоваться explode с разделителем дефисом ( тире ) после принятия номера в качестве входного параметра.

Поскольку explode возвращает массив подстрок, метод explode разобьет номер в следующий массив элементов:

Как использовать функцию PHP explode

В функции PHP explode можно указать три параметра. Последний из них — необязательный, так как указывать количество разбиений ( максимальное количество подстрок ) необязательно.

Описание каждого параметра:

Если в explode array PHP аргумент limit является положительным, возвращаемый массив будет содержать максимальное количество элементов, при этом последний элемент будет содержать остаток строки.

Также можно использовать отрицательное значение. В этом случае все подстроки ( кроме последней ) будут возвращены.

Поскольку explode возвращает массив подстрок, то можно присвоить его массиву. После применения метода можно использовать цикл fогеаch, чтобы перебрать массив элементов, как показано в приведенных выше примерах.

Примечание: Также можно использовать метод str_split для преобразования строки в массив.

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PHP Explode: How to Split String into Array Elements in PHP

The explode() function in PHP allows us to break the string into smaller text, with each break occurring at the same symbol.

To convert PHP String to Array, use the explode() function.

PHP explode() function breaks the string into an array, but the implode function returns a string from the elements of an array.

PHP explode()

PHP explode() is a built-in function used to split the string by the specified string into array elements. The explode() function takes three arguments and returns an array containing elements of the string. The explode() function breaks the string into an array. The explode() function is binary-safe.

Syntax

Arguments

The separator parameter is required, and it specifies where we break the string.

The string parameter is required. It is the string to split.

The limit parameter is optional, and it specifies the number of array elements to return.

Implementation of explode() function

See the following example.

See the below output.

Passing limit parameter

See the following code where we pass the third parameter limit and see the output.

Use the negative limit and see the result.

See the below output.

Passing Multiple delimiters

You can pass the multiple delimiters to the explode() function.

See the following code.

How to split empty string in PHP

To split the empty string in PHP, use the explode() function.

See the following example.

If you split the empty string, you get back the one-element array with 0 as the key and the empty string for the value.

If we want to solve this then, use the array_filter() without callback. Quoting manual page, “If the callback function is not supplied, the array_filter() function will remove all the entries of input that are equal to FALSE.”

Trim whitespaces using explode() method

We can use the explode() function to trim the white space from the string.

With the help of the array_map() function and explode() function, we can trim the white spaces and split the string into an array. See the following code.

Explode does not parse the string by delimiters, in the sense that we expect to find tokens between the starting and ending delimiter, but instead splits the string into pieces by using the string as the boundary of each part.

Once that boundary is discovered, the string is split. Whether or not that limit is proceeded or superseded by any data is irrelevant since the parts are determined when a limit is discovered.

It should be said that when an empty delimiter is passed to explode, the function not only will return false but will also emit a warning. See the following code.

PHP explode vs. split

The main difference between the split() and explode() function is the way it uses to splitting a large string. Both the functions are used to split a string. However, the split() function is used to split a string using a regular expression, while the explode() function is used to split a string using another string.

One more point, the split() function has been DEPRECATED as of PHP 5.3.0. Relying on this feature is highly discouraged; instead, use the explode() function.

The preg_split() is faster and uses PCRE regular expressions for regex splits.

Conclusion

So, if you want to break the string and create the array from it, then use the explode() function.

That is it for splitting a string in the PHP tutorial.

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