php - Sort Multi-dimensional Array by Value -

-



possible duplicate:
how sort multidimensional array in php

how can sort array value of "order" key? though values sequential, not be.

array (     [0] => array         (             [hashtag] => a7e87329b5eab8578f4f1098a152d6f4             [title] => flower             [order] => 3         )      [1] => array         (             [hashtag] => b24ce0cd392a5b0b8dedc66c25213594             [title] => free             [order] => 2         )      [2] => array         (             [hashtag] => e7d31fc0602fb2ede144d18cdffd816b             [title] => ready             [order] => 1         ) )

try usort: if still on php 5.2 or earlier, you'll have define sorting function first:

function sortbyorder($a, $b) {     return $a['order'] - $b['order']; }  usort($myarray, 'sortbyorder');

starting in php 5.3, can use anonymous function:

usort($myarray, function($a, $b) {     return $a['order'] - $b['order']; });

and php 7 can use "spaceship operator":

usort($myarray, function($a, $b) {     return $a['order'] <=> $b['order']; });

to extend multi-dimensional sorting, reference second/third sorting elements if first 0 - best explained below. can use sorting on sub-elements.

usort($myarray, function($a, $b) {     $retval = $a['order'] <=> $b['order'];     if ($retval == 0) {         $retval = $a['suborder'] <=> $b['suborder'];         if ($retval == 0) {             $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder'];         }     }     return $retval; });

if need retain key associations, use uasort() - see comparison of array sorting functions in manual





wiki

Comments

Post a Comment

Popular posts from this blog

python - Read npy file directly from S3 StreamingBody -

-
i have many .npy (numpy) , .json files saved in s3, need download , load these files. for json files downloading files , loading dictionary using following code: obj = s3.object(bucket, key) response = obj.get() body = response['body'].read().decode('utf-8') data = json.loads(body) that way avoid writing .json file disk , reading it. now want same .npy files, equivalent? currently downloading file, saving temp file on disk , loading np.load avoid if possible. following https://stackoverflow.com/a/28196540/3509999 : obj = s3.object(bucket, key) io.bytesio(obj.get()["body"].read()) f: # rewind file f.seek(0) arr = np.load(f) wiki
Read more

kotlin - Out-projected type in generic interface prohibits the use of metod with generic parameter -

-
i start using kotlin , defined interface this: interface aadapter<vh : recyclerview.viewholder> { fun oncreateaviewholder(parent: viewgroup): vh fun onbindaviewholder(v: vh, position: int) } and when try use on code: class klasa ( private val adapter: aadapter<*> ) { fun dosth(){ //... val vh = this.adapter.oncreateaviewholder(parent) //on below line error adapter.onbindaviewholder(v, position) //... } } i error out-projected type 'aadapter<*>' prohibits use of 'public abstract fun onbindaviewholder(v: t, position: int): unit i tied add "in" or "out" definition i'm confused. how allow it. replace aadapter<*> aadapter<recyclerview.viewholder> . class klasa ( private val adapter: aadapter<recyclerview.viewholder> ) { // ... because have declared aadapter has type parameter vh type subclass of recyclerview....
Read more

Asterisk AGI Python Script to Dialplan does not work -

-
i'm stuck project have check database of sip extension incoming caller id , dial sip extension. below receive when run script on asterisk cli. -- registered sip '9125' @ 192.168.1.102:50142 > saved useragent "zoiper rv2.8.40" peer 9125 [2017-08-22 13:53:33] notice[5095]: chan_sip.c:24558 handle_response_peerpoke: peer '9125' reachable. (17ms / 2000ms) == using sip rtp tos bits 184 == using sip rtp cos mark 5 -- executing [0112617769@from-trunk:1] answer("sip/obitrunk1-0000000d", "") in new stack > 0x1ca50d0 -- probation passed - setting rtp source address 192.168.1.98:16834 -- executing [0112617769@from-trunk:2] agi("sip/obitrunk1-0000000d", "test.py") in new stack -- launched agi script /var/lib/asterisk/agi-bin/test.py args: ['/var/lib/asterisk/agi-bin/test.py'] env line: agi_request: test.py env line: agi_channel: sip/obitrunk1-0000000d env line: agi_language: en env line: a...
Read more