The following packages provide symfony/polyfill-php73
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                PHP symfony/polyfill-php73Symfony polyfill backporting some PHP 7.3+ features to lower PHP versions 
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                empaphy/polyphill-phpA metapackage for PHP that installs the polyfills you need, and removes those that are redundant. 
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                sharkmachine/providesA skeleton package that provides polyfills that are not needed 
