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<?php $a = [ 'application/ld+json', 'application/json', 'text/html', ]; if ($accept = preg_grep('~(?i)^(application/json|[^;/ \t]+/[^;/ \t]+[+]json)[ \t]*(;.*)?$~', $a)) { var_dump(implode(',', $accept)); }
Output for git.master, git.master_jit, rfc.property-hooks
string(36) "application/ld+json,application/json"

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