Delete array has duplicate value, how to deal with it

Delete Array has duplicate values
There is a value $a =array (a,b,c) in the original array A;
Compares the value $b =array (b) in array B;

The two phases are compared to get $c= array (a,c);

Excuse me, how does this work?

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Cycle judgment or removal
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With Array_diff ($array _a, $array _b)
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Array_diff, Array subtraction
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PHP code

 $a = Array (a,b,c), $b = Array (b);p Rint_r (Array_diff ($a , $b));
   
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     Explore  
    
 
    
 with Array_diff ($array _a, $array _b) 
    
 
    
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 http://baike.baidu.com/view/4067743.htm 
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 In fact you mean to find out the middle difference set of 2 arrays, Array_diff () This system function can 
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 The Array_diff () manual has 
 
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     discussion  
    
 
    
 with Array_diff ($array _a, $array _b) 
    
 
    
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     Explore  
    
 
    
 with Array_diff ($array _a, $array _b) 
    
 
    
 
    
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