php - Fatal error: Class 'Memcache' not found -

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यह मेरे सिस्टम में हुआ परिणाम है। 

  php -m | Grep -i memcache memcache   
 फिर भी मुझे त्रुटि मिलती है "घातक त्रुटि: क्लास 'मेम्केस' नहीं मिला ..." अपाचे पर एक सिम्फनी ऐप चलाते समय।  
 कृपया अपने php.ini फ़ाइल में अपाचे मॉड्यूल memcache.so को स्थापित करने की आवश्यकता है: विस्तार ===     Memcache.so

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