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php – 错误在macOS上安装Composer(JIT编译失败)

当我在macOS终端中运行composer –version时,我收到以下错误

PHP Warning: preg_match(): JIT compilation Failed: no more memory in
phar:///usr/local/bin/composer.phar/vendor/symfony/console/Application.PHP
on line 755

Warning: preg_match(): JIT compilation Failed: no more memory in phar:///usr/local/bin/composer.phar/vendor/symfony/console/Application.PHP on line 755
PHP Warning:  preg_match(): JIT compilation Failed: no more memory in phar:///usr/local/bin/composer.phar/vendor/symfony/console/Application.PHP on line 759

Warning: preg_match(): JIT compilation Failed: no more memory in phar:///usr/local/bin/composer.phar/vendor/symfony/console/Application.PHP on line 759
PHP Warning:  preg_split(): JIT compilation Failed: no more memory in phar:///usr/local/bin/composer.phar/vendor/symfony/console/Application.PHP on line 654

Warning: preg_split(): JIT compilation Failed: no more memory in phar:///usr/local/bin/composer.phar/vendor/symfony/console/Application.PHP on line 654
PHP Warning:  preg_split(): JIT compilation Failed: no more memory in phar:///usr/local/bin/composer.phar/vendor/symfony/console/Application.PHP on line 1091

Warning: preg_split(): JIT compilation Failed: no more memory in phar:///usr/local/bin/composer.phar/vendor/symfony/console/Application.PHP on line 1091
PHP Warning:  preg_replace(): JIT compilation Failed: no more memory in phar:///usr/local/bin/composer.phar/vendor/symfony/console/Formatter/OutputFormatter.PHP on line 36

Warning: preg_replace(): JIT compilation Failed: no more memory in phar:///usr/local/bin/composer.phar/vendor/symfony/console/Formatter/OutputFormatter.PHP on line 36

  [ErrorException]                                          
  preg_match_all(): JIT compilation Failed: no more memory

解决方法:

这是一个已知的PHP 7.3 bug.

作为临时修复,编辑您的PHP.ini文件(在我的情况下:vi /usr/local/etc/PHP/7.3/PHP.ini),通过更改以下命令禁用PHP PCRE JIT编译:

;pcre.jit=1

pcre.jit=0

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