php print r в файл

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Php print r в файл

В этом разделе помещены уроки по PHP скриптам, которые Вы сможете использовать на своих ресурсах.

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Контекстное экранирование с помощью zend-escaper

Обеспечение безопасности веб-сайта — это не только защита от SQL инъекций, но и протекция от межсайтового скриптинга (XSS), межсайтовой подделки запросов (CSRF) и от других видов атак. В частности, вам нужно очень осторожно подходить к формированию HTML, CSS и JavaScript кода.

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Expressive 2 поддерживает возможность подключения других ZF компонент по специальной схеме. Не всем нравится данное решение. В этой статье мы расскажем как улучшили процесс подключение нескольких модулей.

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Предположим, что вам необходимо отправить какую-то информацию в Google Analytics из серверного скрипта. Как это сделать. Ответ в этой заметке.

Подборка PHP песочниц

Подборка из нескольких видов PHP песочниц. На некоторых вы в режиме online сможете потестить свой код, но есть так же решения, которые можно внедрить на свой сайт.

Совет: активация отображения всех ошибок в PHP

При поднятии PHP проекта на новом рабочем окружении могут возникнуть ошибки отображение которых изначально скрыто базовыми настройками. Это можно исправить, прописав несколько команд.

Агент

PHP парсер юзер агента с поддержкой Laravel, работающий на базе библиотеки Mobile Detect.

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Print array to a file

I would like to print an array to a file.

I would like the file to look exactly similar like how a code like this looks.

Is there any one lines solution for this rather than regular for each look.

13 Answers 13

Either var_export or set print_r to return the output instead of printing it.

Just use print_r ; ) Read the documentation:

So this is one possibility:

file_put_contents($file, print_r($array, true), FILE_APPEND)

Quick and simple do this:

I just wrote this function to output an array as text:

Should output nicely formatted array.

Beware of user input.

This script was created for internal use.

If you intend to use this for public use you will need to add some additional data validation to prevent script injection.

This is not fool proof and should be used with trusted data only.

The following function will output something like:

here is the function (note: function is currently formatted for oop implementation.)

Alternately you can use this script I also wrote a while ago:

This one is nice to copy and paste parts of an array.

( Would be near impossible to do that with serialized output )

Not the cleanest function but it gets the job done.

This one will output as follows:

Also take care for user input. Here is the code.

However op needs to write array as it is on file I have landed this page to find out a solution where I can write a array to file and than can easily read later using php again.

I have found solution my self by using json_encode so anyone else is looking for the same here is the code:

Here is what I learned in last 17 hours which solved my problem while searching for a similar solution.

resources:

Second Resource is the code in one of the answers above:

This is the second thing I didn’t knew, FILE_APPEND.

What I was trying to achieve is get contents from a file, edit desired data and update the file with new data but after deleting old data.

Now I only need to know how to delete data from file before adding updated data.

About other solutions:

Just so that it may be helpful to other people; when I tried var_export or Print_r or Serialize or Json.Encode, I either got special characters like => or ; or ‘ or [] in the file or some kind of error. Tried too many things to remember all errors. So if someone may want to try them again (may have different scenario than mine), they may expect errors.

About reading file, editing and updating:

I used fgets() function to load file array into a variable ($array) and then use unset($array[x]) (where x stands for desired array number, 1,2,3 etc) to remove particular array. Then use array_values() to re-index and load the array into another variable and then use a while loop and above solutions to dump the array (without any special characters) into target file.

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print_r

(PHP 4, PHP 5, PHP 7, PHP 8)

print_r — Выводит удобочитаемую информацию о переменной

Описание

print_r() выводит информацию о переменной в удобочитаемом виде.

Список параметров

Выражение для вывода на экран.

Возвращаемые значения

Примеры

Пример #1 Пример использования print_r()

Результат выполнения данного примера:

Пример #2 Пример использования параметра return

Примечания

Смотрите также

User Contributed Notes 36 notes

I add this function to the global scope on just about every project I do, it makes reading the output of print_r() in a browser infinitely easier.

Here is another version that parses the print_r() output. I tried the one posted, but I had difficulties with it. I believe it has a problem with nested arrays. This handles nested arrays without issue as far as I can tell.

I always use this function in my code, because most of my functions return an Array or Boolean :

?>

( print_r gives no output on FALSE and that can be annoying! )

This works around the hacky nature of print_r in return mode (using output buffering for the return mode to work is hacky. ):

The following will output an array in a PHP parsable format:

Here is a print_r that produces xml:
(now you can expand/collapse the nodes in your browser)

// replace ‘)’ on its own on a new line (surrounded by whitespace is ok) with ‘

A simple function to send the output of print_r to firebug.
The script creates a dummy console object with a log method for when firebug is disabled/not available.

This is an alternative for printing arrays. It bolds array values.

I was having problems using print_r because I didn’t like the fact that if tags where included in the array it would still be parsed by the browsers.

Heres a simple fix for anyone who is having the same problem as I did. This will output your text properly for viewing through the browser instead of the browser’s «view source» or CLI.

A slight modification to the previous post to allow for arrays containing mutli line strings. haven’t fully tested it with everything, but seems to work great for the stuff i’ve done so far.

$output = ‘
Array
(
[a] => apple
[b] => banana
[c] => Array
(
[0] => x
[1] => y
[2] => z
[3] => Array
(
[nest] => yes
[nest2] => Array
(
[nest] => some more
asffjaskkd
)
[nest3] => o rly?
)
)
)

?>

This should output

print_r is used for debug purposes. Yet I had some classes where I just wanted the values coming out of the database, not all the other crap. thus i wrote the following function. If your class has an toArray function, that one will be called otherwise it will return the object as is. print_neat_classes_r is the function that should be called!

Here is a print_r() clone but support max level limit.

When we want to print a big object, this will help us get a clean dumping data.

$test = new testClass ;

testClass Object
(
[a:protected] => aaa
[b:testClass:private] => bbb
[c] => Array
(
[0] => 1
[1] => 2
[2] => Array
*MAX LEVEL*

[d:static] => ddd
[e:protected:static] => eee
[testClass] =>
*RECURSION*

You cannot use print_r(), var_dump() nor var_export() to get static member variables of a class. However, in PHP5 you can use Reflection classes for this:

I use this all the time when debugging objects, but when you have a very large object with big arrays of sub-objects, it’s easy to get overwhelmed with the large amount of output. sometimes you don’t want to see absolutely every sub-object.

I made this function to debug objects while «hiding» sub-objects of certain types. This also color codes the output for a more readable printout.

If you have to catch the output without showing it at all at first (for example, if you want to append the print_r output to a file), you can do this:

Another slight modification to the previous post to allow for empty array elements

my take on the highlighted markupped debug function:

/**
* print_array()
* Does a var_export of the array and returns it between » );
>
?>

For those of you needing to print an array within a buffer callback function, I’ve created this quick function. It simply returns the array as a readable string rather than printing it. You can even choose whether to return it in normal text-mode or HTML. It’s recursive, so multi-dimensial arrays are supported. I hope someone finds this useful!

Here’s a PHP version of print_r which can be tailored to your needs. Shows protected and private properties of objects and detects recursion (for objects only!). Usage:

test Object (
[var1] => a
[var2:protected] => b
[var3:private] => c
[array:protected] => Array (
[0] => x
[1] => y
[2] => z
)
[recursiveRef] => *RECURSION*
[anotherRecursiveRef] => stdClass Object (
[recursiveRef] => *RECURSION*
)
)

Another attempt that tries to overcome the memory blowout when the passed in data has mutual recursion.

I include the entire function below for completeness, but all credit to Matt, the original author, Thank You.

We had an interesting problem dumping an object that
contained embedded HTML. The application makes use
of buffer manipulation functions, so print_r’s 2nd argument
wasn’t helpful. Here is how we solved the problem:

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