Composer json does not contain valid JSON

Question

Hello I am trying to use laravel but i fail with the installation of composer.

I am using a windows 7 and when I install the setup of composer there is not any problem. The problem come when I use the comand composer -V it return to me these error.

I do not undestand what it means. if someone can explain to me the error. Thanks for read it. And sorry if there are some post like these but where i could read i do not undesrtand nothing.

It would probably help if you posted your composer.json file. — Ben Hillier, Aug 30 '16 at 11:54
As I understand your question: Have you have recently installed composer in you Windows 7? — Yosvel Quintero, Aug 30 '16 at 11:58
How did you install Composer? `C:\xampp\php\php.exe` _shouldn't_ contain valid JSON… that's your PHP interpreter. (Also, in the future please copy error messages _as text_ directly into your question instead of linking to a screenshot.) — ChrisGPT was on strike, Aug 31 '16 at 03:04

score 1 · Answer 1 · answered Aug 30 '16 at 11:51

1

paste composer.json file on a validator and it should point out the syntax error

try http://www.jsonlint.com

answered Aug 30 '16 at 11:51

Sherif

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How can i know where is the json? – mohamet monte Aug 30 '16 at 12:24
@mohamet-monte I hadn't looked at your error image ... this is different ... I'm not sure but maybe the composer.json file in your project root – Sherif Aug 30 '16 at 12:27
navigate into www/laravel and you'll find composer.json – Sherif Aug 30 '16 at 12:28
I do no start the project, beacuse on the video i see they install first composer – mohamet monte Aug 30 '16 at 12:30
then something is wrong with your composer installation ... I don't know what it is – Sherif Aug 30 '16 at 12:32

score 0 · Answer 2 · answered Aug 30 '16 at 11:53

0

It returns the error:

Parse error on line 1:
MZ
^
Expecting one of: 'String', 'Number', 'Null' ... {', '['

Kindly check your entire JSON must start from '{' and end from '}' so your invalid JSON convert into Valid JSON.

Copy your JSON into this website: http://jsonlint.com/

answered Aug 30 '16 at 11:53

Noman

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I dont know where is the json. – mohamet monte Aug 30 '16 at 12:23
Kindly check your composer.json file. – Noman Aug 30 '16 at 12:27
I do not have any composer.json on the directory – mohamet monte Aug 30 '16 at 12:29
In Laravel you don't have composer.json file ? How it is possible ? – Noman Aug 30 '16 at 12:31
I did not dowload laravel yet. I am istalling composer first like on the video of youtube – mohamet monte Aug 30 '16 at 12:33

score 0 · Answer 3 · edited May 23 '17 at 12:13

First make sure that you can use php on your command line. You can run:

php -v

This should give you the php version. If not, add the php executable to your windows path file (https://stackoverflow.com/a/7307581/1354222).

Run this in your bash window, in the laravel folder, to get the latest composer version (installation instructions are from the composer website):

php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
php -r "if (hash_file('SHA384', 'composer-setup.php') === 'aa96f26c2b67226a324c27919f1eb05f21c248b987e6195cad9690d5c1ff713d53020a02ac8c217dbf90a7eacc9d141d') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
php composer-setup.php
php -r "unlink('composer-setup.php');"

Then use the following command to install laravel (from the laravel website, slightly adapted for your situation):

php composer.phar create-project --prefer-dist laravel/laravel blog

score 0 · Answer 4 · answered Dec 17 '18 at 13:24

0

try update you vendor/composer/installer.json to following.

{}

this same happened to me

answered Dec 17 '18 at 13:24

RED

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Composer json does not contain valid JSON

4 Answers4