What Im Building:
The script archives a working directory using GIT-POSH and sends it to a Linux Apache Server using a Windows Powershell SSH Module.
For convenience, the script also needs to do reporting on existing files on the local machine as well as the Apache server.
The Problem:
This is where I need string manipulation to separate each block in the naming convention.
I was going to use underscores block_block until I realized some of the blocks contain underscores them already.
This is when I decided to encapsulate each block with brackets [block][block]
In PHP I would use preg_split to pull out each piece into an associative array.
[product][branch_name][date][time][commit_hash]
Expected Usage:
--> Get-Product $string
--> product123
--> Get-Branch $string
--> branch123
Questions I have:
How do I preg_split this string the same way using powershell and apache?
A better naming convention that supports the same operation?
PHP's preg_split can be mimicked with System.RegularExpressions.Split(). There are some caveats, namely Split() will return empty strings for tokens it replaced, so some filtering is needed. Like so,
$data = "[product][branch_name][date][time][commit_hash]"
$arr = [Regex]::Split($data, "[\[\]]") | ? { $_.length -gt 0 }
$arr
Output:
product
branch_name
date
time
commit_hash
Without the filtering clause ? { $_.length -gt 0 } - which will exclude string objects that have length of zero - the output would be slightly different:
product
branch_name
date
time
commit_hash
This behaivour is documented in MSDN.
Related
Scenario:
I have a php file that I'm using by a zip code lookup form. It has number arrays of five digit zip codes running anywhere from 500 to 1400 zip codes. So far it works but I get PHP sniffer warnings in my code editor (Brackets) that I'm exceeding the 120 character limit.
Question:
Will this stop my PHP from running in certain browsers?
Do I have to go to every 120 characters and do a return just to keep the line length in compliance?
It appears, I need to place these long strings into a database and call them in to the array rather than hang them all inside the PHP.
I am front-end designer so a lot to learn.
<?php
$zip = $_GET['zip']; //your form method is post
// Region 01 - PersonOne Name Zips
$loc01 = array (59001,59002,59003,59004,59006);
// Region 02 - PersonTwo Name Zips
$loc01 = array ("00001","00002","00003","00004","00006");
// Above numeric strings could include 2000 zips
// Region 01 - PersonTwo Name Zips
if (in_array($zip, $loc01)) {
header("Location: https://company.com/personone");
// Region 02 - PersonTwo Name Zips
if (in_array($zip, $loc02)) {
header("Location: https://company.com/persontwo");
Question: Will this stop my PHP from running in certain browsers?
No, PHP runs entirely on the server. Browsers have nothing to do with PHP -- browsers are clients. Languages like HTML, CSS and (most) JavaScript are browser languages, but PHP is only server-side.
Do I have to go to every 120 characters and do a return just to keep the line length in compliance?
No, but I would highly suggest using a database to store tons of records like this. It's exactly what databases are for. Alternatively you could put them in a file and simply read the file in with PHP's file_get_contents function.
I will try to:
Add each array into a mysql database record.
Create a PHP script that fetches each array and applies it to the
respective location.
This will eliminate the bloated lines of arrays numbers in PHP.
BTW, I also need to define these as 5 digit numeric strings as many of the zips start with one or two zeros which are ignored by the POST match.
Thanks everyone for the input.
I'm running PHP on a Windows Server and I have a script that uses PowerShell to perform some WMI queries. I'm taking the results of the query and exploding it by line break so that each property of the WMI class is its own line (and later will be used for other stuff).
The problem I'm having is that by default, the command prompt window width is limited to 80 characters so when the PHP script obtains the results of the WMI query, certain lines that exceed 80 characters are broken up into numerous lines and I'd really like each line to only be one line regardless of how long the string is.
I've tried logging into the server and changing the default width of the command prompt as well as both 32- and 64-bit PowerShell windows. When I run the commands directly in those applications, I can see it's no longer breaking on 80 characters. However, my PHP script still does.
Here's a snippet of my code:
exec("powershell.exe -Command \" & { Get-WmiObject -Query 'Select * From Win32OperatingSystem' | Format-List *} \" ", $Output, $ReturnValue);
foreach ($Output as $PSOutput) {
$ExplodePSOutput = explode("\r\n", $PSOutput);
foreach ($ExplodePSOutput as $WMIProperty) {
echo $WMIProperty."<br>";
}
}
Here's an example of what the output is like:
Status : OK
Name : Microsoft Windows 10 Enterprise|C:\
WINDOWS|\Device\Harddisk0\Partition
2
FreePhysicalMemory : 9224968
But I'm wanting it to look like this:
Status : OK
Name : Microsoft Windows 10 Enterprise|C:\WINDOWS|\Device\Harddisk0\Partition2
FreePhysicalMemory : 9224968
Update:
My ultimate goal was to extract each property name from the selected WMI class. Since each property named was followed with " : ", I was able to work around this problem by searching each exploded string for this pattern and returning the value to the left of that. If that pattern doesn't exist, it's presumably a line that was broken because it went over the 80 character limit.
$PatternPosition = strpos($WMIPropertyResult, " : ");
$WMIPropertyName = substr($WMIPropertyResult, 0, $PatternPosition);
PowerShell formats the output to align all of the property values but it formats it based on the longest property name and property names will obviously change based on what WMI class is being queried. So it makes more sense to search for the " : " pattern instead of hardcoding a value in the substr() function.
I'll leave this post around in case anyone has a suggestion on the original question but for my use case, I believe I have a sufficient workaround.
(Can't paste the exact question as the contest is over and I am unable to access the question. Sorry.)
Hello, recently I took part in a programming contest (PHP). I tested the code on my PC and got the desired output but when I checked my code on the contest website and ideone, I got wrong output. This is the 2nd time the same thing has happened. Same PHP code but different output.
It is taking input from command line. The purpose is to bring substrings that contact the characters 'A','B','C','a','b','c'.
For example: Consider the string 'AaBbCc' as CLI input.
Substrings: A,a,B,b,C,c,Aa,AaB,AaBb,AaBbC,AaBbCc,aB,aBb,aBbC,aBbCc,Bb,BbC,BbCc,bC,bCc,Cc.
Total substrings: 21 which is the correct output.
My machine:
Windows 7 64 Bit
PHP 5.3.13 (Wamp Server)
Following is the code:
<?php
$stdin = fopen('php://stdin', 'r');
while(true) {
$t = fread($stdin,3);
$t = trim($t);
$t = (int)$t;
while($t--) {
$sLen=0;
$subStringsNum=0;
$searchString="";
$searchString = fread($stdin,20);
$sLen=strlen($searchString);
$sLen=strlen(trim($searchString));
for($i=0;$i<$sLen;$i++) {
for($j=$i;$j<$sLen;$j++) {
if(preg_match("/^[A-C]+$/i",substr($searchString,$i,$sLen-$j))) {$subStringsNum++;}
}
}
echo $subStringsNum."\n";
}
die;
}
?>
Input:
2
AaBbCc
XxYyZz
Correct Output (My PC):
21
0
Ideone/Contest Website Output:
20
0
You have to keep in mind that your code is also processing the newline symbols.
On Windows systems, newline is composed by two characters, which escaped representation is \r\n.
On UNIX systems including Linux, only \n is used, and on MAC they use \r instead.
Since you are relying on the standard output, it will be susceptible to those architecture differences, and even if it was a file you are enforcing the architecture standard by using the flag "r" when creating the file handle instead of "rb", explicitly declaring you don't want to read the file in binary safe mode.
You can see in in this Ideone.com version of your code how the PHP script there will give the expected output when you enforce the newline symbols used by your home system, while in this other version using UNIX newlines it gives the "wrong" output.
I suppose you should be using fgets() to read each string separetely instead of fread() and then trim() them to remove those characters before processing.
I tried to analyse this code and that's what I know:
It seems there are no problems with input strings. If there were any it would be impossible to return result 20
I don't see any problem with loops, I usually use pre-incrementation but it shouldn't affect result at all
There are only 2 possibilities for me that cause unexpected result:
One of the loops iteration isn't executed - it could be only the last one inner loop (when $i == 5 and then $j == 5 because this loop is run just once) so it will match difference between 21 and 20.
preg_match won't match this string in one of occurrences (there are 21 checks of preg_match and one of them - possible the last one doesn't match).
If I had to choose I would go for the 1st possible cause. If I were you I would contact concepts author and ask them about version and possibility to test other codes. In this case the most important is how many times preg_match() is launched at all - 20 or 21 (using simple echo or extra counter would tell us that) and what are the strings that preg_match() checks. Only this way you can find out why this code doesn't work in my opinion.
It would be nice if you could put here any info when you find out something more.
PS. Of course I also get result 21 so it's hard to say what could be wrong
Currently I need to merge that 50+ PDF files into 1 PDF. I am using PDFTK. Using the guide from: http://www.johnboy.com/blog/merge-multiple-pdf-files-with-php
But it is not working. I have verified the following:
I have tried the command to merge 2 pdfs from my PHP and it is working.
I have echo the final command and copied that command and paste into command prompt and run manually and all the 50 PDFs are successfully merged.
Thus exec in my PHP and the command to merge 50 PDFs are both correct but it is not working when done together in PHP. I have also stated set_time_limit(0) to prevent any timeout but still not working.
Any idea what's wrong?
You can try to find out yourself:
print exec(str_repeat(' ', 5000) . 'whoami');
I think it's 8192, at least on my system, because it fails with strings larger than 10K, but it still works with strings shorter than 7K
I am not sure if there is a length restriction on how long a single command can be but I am pretty sure you can split it accross multiple lines with "\" just to check if thats the problem. Again I dont think it is... Is there any error output when you try to run the full command with PHP and exec, also try system() instead of exec().
PDFTK versions prior to 1.45 are limited to merge 26 files cuz use "handles"
/* Collate scanned pages sample */
pdftk A=even.pdf B=odd.pdf shuffle A B output collated.pdf
as you can see "A" and "B" are "handles", but should be a single upper-case letter, so only A-Z can be used, if u reach that limit, maybe you script outputs an error like
Error: Handle can only be a single, upper-case letter
but in 1.45 this limitation was removed, changelog extract
You can now use multi-character input handles. Prior versions were
limited to a single character, imposing an arbitrary limitation on
the number of input PDFs when using handles. Handles still must be all
upper-case ASCII.
maybe you only need update your lib ;)
I relogin to my server in dreamhost and test some scripts.And I found I couldn't use str_split. Message of Undefined function was given.I checked the version in the server and its PHP Version is 5.2.12.And I just wonder which version is required?Thanks.
Testcode:
<?php
$arr = str_split("lsdjflsdjflsdjflsdjfl");
print_r($arr);
?>
Message:
Fatal error: Call to undefined function: str_split() in /test.php on line 3
Edit #Justin Johnson
I checked the server's system directory,and I found there are two versions of PHP in Dreamhost.In user's webroot,file will be parsed by PHP5 and that's why I got php 5.2.12 by putting a phpinfo.php in the webroot.And if php files are ran in command line directly using php test.php,another php version which is 4.x worked.That's the reason I got an error.When I use
/usr/local/php5/bin/php test.php
Everything is fine.
Rather than use str_split, it's usually much easier to iterate through the characters of the string directly:
$s="abc";
$i=0;
while(isset($s[$i])) {
echo $s[$i++]." ";
}
see?
First off: The PHP documentation will always say what version is required for every function on that function's documentation page directly under the function name.
It is possible that an .htaccess file is somewhere in your path and is causing a previous version (<5) of PHP to be used. To double (or triple) check to make sure that you are running in the proper PHP version, place this code above the line where you call str_split
echo "version:", phpversion(),
"<br/>\nstr_split exists? ",
function_exists("str_split") ? "true" : "false";
However, as shown by Col. Shrapnel, it is not necessary to convert a string to an array of individual characters in order to iterate over the characters of that string. Strings can also be iterated over using traditional iteration methods, thus making the call to str_split unnecessary and wasteful (unless you need to segment the string into fixed length chunks, e.g.: str_split($s, 3))
foreach ( str_split($s) as $c ) {
// do something with character $c
}
can be replaced by
$s = "lsdjflsdjflsdjflsdjfl";
for ( $i=0; isset($s[$i]); ++$i ) {
// do something with character $s[$i]." ";
}
which is equally, if not more clear.
According to dreamhost wiki, you need to switch to php5 manually from control panel, if you created your domain before 2008 sept.
http://wiki.dreamhost.com/Installing_PHP5#Using_DreamHost.27s_PHP_5
PHP 5 was added to all plans by
DreamHost as of June 2005. As of
September 2008, support for PHP4 was
discontinued, so you can no longer
switch back to PHP 4 from PHP 5 from
the panel.
If you haven't switched to PHP 5 yet,
you can do this in the Control Panel.
But, again, you will not be able to
switch back to PHP 4 after switching
to PHP 5.
Here's how to switch from PHP 4 to PHP
5:
Log into the DreamHost Control Panel.
Click Domains, then Manage Domains.
Click the wrench icon next to the domain you want to activate PHP 5
on (under the Web Hosting column).
Select PHP 5.x.x from the dropdown menu.
Click Change fully hosted settings now! at the bottom of the
section.
Repeat steps 3-5 for each additional domain you want to
activate.
you could also check your php version with
<?php
phpinfo();
?>
The version required is PHP 5 or later. So theoretically your program should work.
If you can't get str_split to work, just use a string as an array:
$stuff = "abcdefghijkl";
echo $stuff[3];
will produce
d
This method is fastest, anyway. I don't know if it suits your needs, but if it does, I hope it helps!
Could be anything in your code. How do we know its not a 10 line script or 2000 line script?
You can use preg_split() to split an array into single characters, but it will return an extra empty string at the begining and the end.
$a = preg_split("//","abcdefg");
echo json_encode($a);
prints:
["","a","b","c","d","e","f","g",""]