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<?php $key = 12; print 'a: ' . substr((string) $key, 0, 1) . "\n"; $key = ''; print 'b: ' . substr((string) $key, 0, 1) . "\n"; $key = '_test'; print 'c: ' . substr((string) $key, 0, 1) . "\n";
Output for rfc.property-hooks, git.master, git.master_jit
a: 1 b: c: _

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