I have two arrays of the same length ($search_type, $search_term)
. I want to remove any duplicates in the sense of there being searches that have the same type and
Try either array_intersect() which will take two arrays and return an array where a value in array A exists in array B. Or array_diff() which does the opposite and returns an array of all values in A that don't exist in B.
It doesn't look like there's a simple way to solve the problem using just built-in functions.
This (at least logically) should work.
$search_terms = array('a', 'b', 'c', 'c', 'd', 'd');
$search_types = array( 1, 2, 3, 4, 5, 5);
$terms = array_fill_keys($search_terms, array());
// Loop through them once and make an array of types for each term
foreach ($search_terms as $i => $term)
$terms[$term][] = $search_types[$i];
// Now we have $terms = array('a' => array(1),
// 'b' => array(2),
// 'c' => array(3, 4),
// 'd' => array(5, 5)
// );
// Now run through the array again and get rid of duplicates.
foreach ($terms as $i => $types)
$terms[$i] = array_unique($types);
Edit: Here's a shorter and presumably more efficient one where you end up with a less pretty array:
$search_terms = array('a', 'b', 'c', 'c', 'd', 'd');
$search_types = array( 1, 2, 3, 4, 5, 5);
$terms = array_fill_keys($search_terms, array());
// Loop through them once and make an array of types for each term
foreach ($search_terms as $i => $term)
$terms[$term][$search_types[$i]] = 1;
// Now we have $terms = array('a' => array(1 => 1),
// 'b' => array(2 => 1),
// 'c' => array(3 => 1, 4 => 1),
// 'd' => array(5 => 1)
// );
Ok, here's an overly complex ad-hoc function foo()
(lacking error handling, documentation and testing) that combines those two arrays. array_unique() takes care of the duplicates.
<?php
$search_term = array('termA', 'termB', 'foo'=>'termC', 'bar'=>'termD', 'termB', 'termA');
$search_type= array('typeA', 'typeB', 'foo'=>'typeC', 'bar'=>'typeD', 'typeB', 'typeA');
$x = foo(array('term', $search_term), array('type', $search_type));
$x = array_unique($x, SORT_REGULAR);
var_dump($x);
function foo() {
$rv = array();
$params = func_get_args();
foreach ( array_keys($params[0][1]) as $key ) {
$rv[$key] = array();
foreach( $params as $p ) {
$rv[$key][$p[0]] = $p[1][$key];
}
}
return $rv;
}
prints
array(4) {
[0]=>
array(2) {
["term"]=>
string(5) "termA"
["type"]=>
string(5) "typeA"
}
[1]=>
array(2) {
["term"]=>
string(5) "termB"
["type"]=>
string(5) "typeB"
}
["foo"]=>
array(2) {
["term"]=>
string(5) "termC"
["type"]=>
string(5) "typeC"
}
["bar"]=>
array(2) {
["term"]=>
string(5) "termD"
["type"]=>
string(5) "typeD"
}
}