[Configuration] Fix open_basedir warnings (#887)
If .git/HEAD isn't in open_basedir it'd throw ugly warnings. Suppress errors while checking if file is readable
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@ -107,7 +107,8 @@ class Configuration {
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$headFile = '.git/HEAD';
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if(file_exists($headFile)) {
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// '@' is used to mute open_basedir warning
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if(@is_readable($headFile)) {
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$revisionHashFile = '.git/' . substr(file_get_contents($headFile), 5, -1);
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$branchName = explode('/', $revisionHashFile)[3];
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