Example analysis of key and Current,next in PHP, next example Analysis _php tutorial

A case study of key and Current,next in PHP, next example analysis

This paper describes the joint application of key and Current,next in PHP. Share to everyone for your reference, as follows:

Problem:

$ARRQ = Array (); $arrq [' TUC '] = Array (' sss ' = ' ewq ', ' shu ' = ' Sjkah ', ' saa ' = ' Dwjhaz '); $arrq [' tucs '] = Array (' SSSs ' + ' ewsq ', ' sqhu ' =>dwjhaz ', ' sa12a ' = ' Dwjqhaz '); $arrq [' tuca '] = Array (' SSSD ' = ' ewqq ', ' shu2 ' = ') Sjkah ', ' saSa ' = ' Dwjhhaz ');

How do I remove duplicate values from a $ARRQ array without destroying the array structure?

idea : First the elements in the first two-dimensional array are output using the Array_unique function.
When you output the elements in the second two-dimensional array, you first use array_unique processing, and then remove the elements that already exist in the first two-dimensional array.
When you output the third, you first use array_unique processing, and then remove the elements that already exist in the first and second two-dimensional combined set.
And so on

In short, you first have to Array_unqiue to the weight, and then remove the elements in the preceding array element in the same set.

Here is the code:

<?PHP$ARRQ = Array (); $arrq [' TUC '] = Array (' sss ' = ' ewq ', ' shu ' = ' Sjkah ', ' saa ' = ' Dwjhaz '); $arrq [' tucs '] = Array (' ssss ' = ' ewsq ', ' sqhu ' = ' Dwjhaz ', ' sa12a ' = ' Dwjqhaz '); $arrq [' tuca '] = Array (' SSSD ' = ' ewqq ', ' Shu2 ' = ' Sjkah ', ' saSa ' = ' Dwjhhaz '); $last =array (); Sets an empty array to compare while ($arr =current ($ARRQ)) {  //echo key ($ARRQ);  $tmp =array_unique ($arr); First, clear the same value for each one-dimensional array itself  if (count ($last) ==0) {    $last =array_merge ($last, $arr);//merge the previous array that has been de-weighed  }  else {// Outputs the remaining one-dimensional array    //echo key ($ARRQ);    foreach ($arr as $ke + $va) {      if (In_array ($arr [$ke], $last))//If an element unset already exists      ($arrq [Key ($ARRQ)] [$ke]); Delete, where the key value of the array element is critical    }    $last =array_merge ($last, $arr);//$last into a collection of previous arrays for next comparison  }  next ($ ARRQ); The pointer moves backwards so that the key function can be used to obtain a different $ARRQ subscript}//The following output-processed array, foreach ($arrq as $arr) {  foreach ($arr as $val) {    echo $val. " ";  }  echo "
";}? >

The result of the operation is:

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I hope this article is helpful to you in PHP programming.

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