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<?php // remove duplicated spaces into single spaces but persist special spaces like the non-breaking-space $normalized = "\xC2\xA0 | \xE1\xBA\xA0 "; $normalized = preg_replace("/([ \xC2\xA0])?\\s+/u", '$1 ', $normalized); $normalized = preg_replace('/([ \xC2\xA0]) /u', '$1', $normalized); var_dump($normalized, bin2hex($normalized));
Output for git.master, git.master_jit, rfc.property-hooks
string(8) " | Ạ " string(16) "c2a07c20e1baa020"

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