php - Whats wrong in regular expression -

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क्या गलत है: 

  $ pattern = '/ 9 [0-5 [7 -9]] {1} [\\ d] {10}) | ([0-2] \\ d {11} / '; $ विषय =' 971093342689 ';   
 Php  
  preg_match ($ पैटर्न, $ विषय)   
 एक त्रुटि प्राप्त करने की कोशिश कर रहा है:  
  preg_match ): संकलन विफल: ऑफसेट 22 में बेमेल कणों    
 
 
 दो कोष्ठक बंद नहीं हैं:  <पूर्व>  $ पैटर्न = '/ 9 [0-5 [7-9]] {1} [\\ d] {10}) | ([0-2] \\ d {11 } / '; ^^^^   
 यदि आपको यह संकेत है, तो आपको इसे बचाना होगा। अन्यथा आपको एक खुला और एक बंद कोष्ठक की जरूरत है जिसमें आप regexp हैं।

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