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array_diff()
The array_diff() function compares the values of two (or more) arrays, and returns the differences.
Syntax:array_diff(array1,array2,array3...);
In above Syntax,"array1" compare from, "array2" compare against,"array3" compare against to more arrays.
Example:
<?php $array1=array("a"=>"Apple","b"=>"Banana","c"=>"Orange","d"=>"Mango"); $array2=array("e"=>"Apple","f"=>"Banana","g"=>"Orange"); $result=array_diff($array1,$array2); print_r($result); ?>
Output:
array_diff_assoc()
The array_diff_assoc() function compares the keys and values of two (or more) arrays, and returns the differences.
Syntax:array_diff_assoc(array1,array2,array3...);
In above Syntax,"array1" compare from, "array2" compare against,"array3" compare against to more arrays.
Example:
<?php $array1=array("a"=>"Apple","b"=>"Banana","c"=>"Orange","d"=>"Mango"); $array2=array("e"=>"Apple","f"=>"Banana","g"=>"Orange"); $result=array_diff_assoc($array1,$array2); print_r($result); ?>
Output:
array_diff_uassoc()
The array_diff_uassoc() function compares the keys and values of two (or more) arrays, and returns the differences.
Syntax:array_diff_uassoc(array1,array2,array3...,myfunction);
In above Syntax,"array1" compare from, "array2" compare against,"array3" compare against to more arrays and "myfunction" is a string that define a callable comparison function. The comparison function must return an integer <, =, or > than 0 if the first argument is <, =, or > than the second argument
Example:
<?php function myfunction($a,$b) { if ($a===$b) { return 0; } return ($a>$b)?1:-1; } $array1=array("a"=>"Apple","b"=>"Banana","c"=>"Orange"); $array2=array("e"=>"Apple","f"=>"Banana","g"=>"Orange"); $result=array_diff_uassoc($array1,$array2,"myfunction"); print_r($result); ?>
Output:
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