I am trying to figure out a way that I could match the ‘userid’ on both arrays. Then the ones that match, keep the rows in MongoDBResults. Desired output: I tried: also Answer You can index on userid and then compute the intersection of the keys:
Tag: filtering
Alphabetical filtering of custom post type in WordPress results
I’m working on a custom post type archive and I want to add an A-Z filtering menu. I managed to pretty much get it working following this thread (Create alphabetical Pagination in wordpress) but I …
Preserve elements in each row of a two-dimensional array based on another array
I have this array: What I am looking for is a way to get a multiple array with only required columns (array_column is not a option, since it’s give me only 1 column). What I have done The problem is that it seems too laggy, since it iterates twice over this. Is there any way to get multiple columns without
How to remove values from an array if occurring more than one time?
I need to remove values from an array that occur more than one time in the array. For example: I need this result: Is there any in-built function in php? I tried this, but this will not return my expected result: Answer You can use array functions and ditch the foreach loops if you wish: Here is a one-liner: Code:
Why does array_uintersect() compare elements between array1 & array2, array1 & array1, and array2 & array2?
Test script Actual Result Expected Result In other words, what I am expecting to be passed to the callback is the current element of the left array, and the current element of the right array. Furthermore, I would expect the same logic to apply if I were to pass an additional array to array_uintersect – one more argument being passed
Compare two 2D arrays & get intersection and differences
I have two multidimensional arrays with me.. I want to split above given arrays into three different arrays.. Answer Convert arrays to a format, where array index is the sight_id: Calculate the differences and intersection: Convert arrays back to your format:
Filter array to retain all elements that have a key containing a searched string
I’m trying to do some predictive searching, and I am using preg_grep() as a way to get away from the LIKE in SQL. I have the following array: If I have Phorc I want all array elements (key and value), with a partial match of Phorc, so here Phorce => 123. Is this possible with preg_grep() ? I have tried
Most efficient way to find bidirectional differences between associative arrays
I have a contact array with a set of values which I need to update. I also have a contactChangeLog array that will save the diff between an existing and updated contact. Only the keys which get updated need to be saved to the log. So with 2 contact arrays: I can use array_diff_assoc()… However, I am iterating twice through
PHP filter_input_array for $_FILES?
Is there a way to filter_input_array for $_FILES? I tried but it doesn’t seem to be the same syntax as $_POST: And after quick check of the Constants List shows that it isn’t an installed definition for filter_input_array. So, should I define it some other way? DEFINE(‘INPUT_FILES’ $_FILES); likes to throw errors in filter_var_array like Answer You can’t use filter_input_array
Filter array to retain rows with smallest element count and unique first and last elements
I want to remove rows from my array so that my result is an array that contains rows with unique first and last elements. If two (or more) rows have the same first and last value, I want to preserve the row with the lowest element count. Say I have the following array: What I want is to remove all