Function: array_intersect_key version 17
Function:
Description:
Returns the entries of arr1 that have keys which are present in all the other arguments. Kind of equivalent to array_diff(array_keys($arr1), array_keys($arr2)[,array_keys(...)]). Equivalent of array_intersect_assoc() but does not do compare of the data.
Version:
Status:
latest
Date:
2011-12-20 04:33
Summary:
Import from phpjs.
Programmer:
jj5
Code
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function array_intersect_key (arr1) {
// http://jsphp.co/jsphp/fn/view/array_intersect_key
// + original by: Brett Zamir (http://brett-zamir.me)
// % note 1: These only output associative arrays (would need to be
// % note 1: all numeric and counting from zero to be numeric)
// * example 1: $array1 = {a: 'green', b: 'brown', c: 'blue', 0: 'red'}
// * example 1: $array2 = {a: 'green', 0: 'yellow', 1: 'red'}
// * example 1: array_intersect_key($array1, $array2)
// * returns 1: {0: 'red', a: 'green'}
var retArr = {},
argl = arguments.length,
arglm1 = argl - 1,
k1 = '',
arr = {},
i = 0,
k = '';
arr1keys: for (k1 in arr1) {
arrs: for (i = 1; i < argl; i++) {
arr = arguments[i];
for (k in arr) {
if (k === k1) {
if (i === arglm1) {
retArr[k1] = arr1[k1];
}
// If the innermost loop always leads at least once to an equal value, continue the loop until done
continue arrs;
}
}
// If it reaches here, it wasn't found in at least one array, so try next value
continue arr1keys;
}
}
return retArr;
}
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