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Unable to resolve deprecation notice with composer – CentOS

I have asked my hosting provider to switch the operating system on my server from Centos to Ubuntu. Upon downloading all my files from GitHub and running “composer install” I am getting the following error in terminal:

Deprecation Notice: The behavior of unparenthesized expressions containing both ‘.’ and ‘+’/’-‘ will change in PHP 8: ‘+’/’-‘ will take a higher precedence in /usr/share/php/Composer/Downloader/GitDownloader.php:223
Deprecation Notice: The behavior of unparenthesized expressions containing both ‘.’ and ‘+’/’-‘ will change in PHP 8: ‘+’/’-‘ will take a higher precedence in /usr/share/php/Composer/Downloader/SvnDownloader.php:132

After this composer quits so I need to be able to resolve this not worked around it.

Already tried solutions:

  • Uninstall and re-install composer.
  • Upgrade, update, and install commands attempted.
  • A fresh install of Laravel in case of corruption on Git clone.
Tags:

6

Answers


  1. 0

    How to solve it

    Put parenthesis surrounding

    $someString . ($a + $b) . $anotherString

    What is the error

    If you’d write something like this:

    echo "sum: " . $a + $b;

    PHP would previously interpret it like this:

    echo ("sum: " . $a) + $b;

    PHP 8 will make it so that it’s interpreted like this:

    echo "sum: " . ($a + $b);

    source: https://stitcher.io/blog/new-in-php-74

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  2. 0

    If composer self-update is not solve your problem, re-installing composer is best way.

    https://getcomposer.org/download/

    My composer also gave these errors and self-update not worked.

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  3. 0

    While working on a new project this morning, I encountered a similar error. And my solution : if an expression has . with +,- etc. you must add parenthesis,

       $this->io->writeError('    <info>' .count($changes) - 10 . ' more files modified, choose "v" to view the full list</info>');

    to

       $this->io->writeError('    <info>'.(count($changes) - 10) . ' more files modified, choose "v" to view the full list</info>');
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  4. 0

    echo ‘Total’ . 5 + 5;

    Deprecated: The behavior of unparenthesized expressions containing both ‘.’ and ‘+’/’-‘ will change in PHP 8: ‘+’/’-‘ will take a higher precedence in … on line …

    From PHP 8 and later, this will be evaluated as ‘total’ + (5 + 5), with the + and – operators taking higher precedence.

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  5. 0

    upgrade composer using this command composer self-update
    happy coding

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  6. 0

    You can rename the composer.phar file with composerOld.phar and download new file manually from the official site and put it over there.
    It will work.

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