Just noticed something, but I'm not sure why this is true, or why it is different than a standard script, maybe someone can help me solve this riddle. When running a PHP script that contains a json_* function from the command line as an executable I will get a Fatal error: Call to undefined function json_encode() in /var/www/jsontest.php on line 6 with the script below
#!/usr/bin/php -n
<?php
$arr = array('foo', 'bar', 'baz');
print_r($json = json_encode($arr));
print_r(json_decode($bar));
This also happens with json_decode() when trying to decode standard clean json input (validated via jsonlint)
The above script was being run as follows, in a Linux/DEB terminal...
$ chmod +x jsontest.php
$ ./jsontest.php
By running this through my local webserver though, I receive my expect output
#!/usr/bin/php -n ["foo","bar","baz"]Array ( [0] => foo [1] => bar [2] => baz )
What is going on? Why is JSON not available when interpreted as an executable?
PHP version is PHP 5.5.3-1ubuntu2 (cli) (built: Oct 9 2013 14:49:24) and PHPInfo for anyone who might want it is published on my Ubuntu One Account
I'm guessing that the issue here is your php.ini file - PHP uses a different ini file when running as CLI. Have a look at Explosion Pill's answer on this question:
When running php from the command line, you can use the -c or
--php-ini argument to point to the php.ini file to use. This will allow you to use one php.ini file for both. You can also alias php to
php -c/path/to/php.ini if you are running the script yourself.
Related
I've looked at how composer is set up to run a php script by calling composer without issuing php manually and I tried to do this myself but it isn't working. I know this is probably asked before but I can't formulate a question to find it.
I have my file
#!/usr/bin/php
<?php
echo 'teststring' . PHP_EOL;
when I issue test in the directory the file is located I get nothing, but if I do php test then I get "teststring" echoed out. The question is - how do I set it up so that I can execute the file directly?
I have given x permissions on the file.
Here is a sample output:
x#y:~/www/html/dev/Project$ ls
...
-rwxrwxr-x 1 www-data www-data 53 сеп 22 12:34 test
...
x#y:~/www/html/dev/Project$ test
x#y:~/www/html/dev/Project$ php test
teststring
x#y:~/www/html/dev/Project$ which php
/usr/bin/php
x#y:~/www/html/dev/Project$
You should try to locate php executable by using which instead of whereis like so
$ which php
... this command only searches for executables, while whereis tries to guess useful links, you can read more [here] (https://superuser.com/questions/40301/which-whereis-differences)
Then just run it like so
$ ./teststring
You can read more about executing shell scripts here
thegeekstuff
tldp.org
I'm having trouble using PHP to execute a casperjs script:
<?php
putenv("PHANTOMJS_EXECUTABLE=/usr/local/bin/phantomjs");
var_dump(exec("echo \$PATH"));
exec("/usr/local/bin/casperjs hello.js website.com 2>&1",$output);
var_dump($output);
Which results in the following output:
string(43) "/usr/gnu/bin:/usr/local/bin:/bin:/usr/bin:."
array(1) {
[0]=>
string(36) "env: node: No such file or directory"
}
The only stackoverflow posts I could find hinted that there's a problem with my paths, and that maybe the PHP user can't access what it needs.
I have also tried the following: sudo ln -s /usr/bin/nodejs /usr/bin/node
Does anyone know what I would need to do or change for this error to resolve?
Thanks
My guess is you have something, somewhere, that assumes node is installed.
First, are you running php from the commandline? I.e. as php test.php in a bash shell. If so, you can run the commands, below, as they are. If through a web server the environment can be different. I'd start with making a phpinfo(); script, and then run the troubleshooting commands through shell_exec() commands. But, as that is a pain, I'd get it working from the commandline first, and only mess around with this if the behaviour is different when run through a web server. (BTW, if you are running from a cron job, again, the environment can be slightly different. But only worry about this if it works from commandline but does not work from cron.)
Troubleshoot hello.js
The easy one. Make sure your script does not refer to node anywhere. Also remember you cannot use node modules. So look for require() commands that should not be there.
Troubleshoot your bash shell
Run printenv | grep -i node to see if anything is there. But when PHP runs a shell command, some other files get run too. So check what is in /etc/profile and ~/.bash_profile . Also check /etc/profile.d/, /etc/bashrc and ~/.bashrc. You're basically looking for anything that mentions node.
Troubleshoot phantomjs/casperjs
How did you install phantomjs and casperjs? Are the actual binaries under /usr/local/bin, or symlinks, or are they bash scripts to the . E.g. on my machine:
cd /usr/local/bin
ls -l casperjs phantomjs
gives:
lrwxrwxrwx 1 darren darren 36 Apr 29 2014 casperjs -> /usr/local/src/casperjs/bin/casperjs
lrwxrwxrwx 1 darren darren 57 Apr 29 2014 phantomjs -> /usr/local/src/phantomjs-1.9.7-linux-x86_64/bin/phantomjs
And then to check each file:
head /usr/local/src/casperjs/bin/casperjs
head /usr/local/src/phantomjs-1.9.7-linux-x86_64/bin/phantomjs
The first tells me casper is actually a python script #!/usr/bin/env python, while the second fills the screen with junk, telling me it is a binary executable.
I am using Boris—"A tiny little, but robust REPL for PHP". To be more specific, I am using WP-CLI's implementation of Boris (wp shell—it replaces the $boris command prompt with wp>).
I was wondering if it was possible to pipe the command line output to say, a text file. For example, I want to capture my PHP info to a text file. Here is what happens when I execute phpinfo();
wp> phpinfo();
phpinfo()
PHP Version => 5.3.14
System => Darwin Macintosh-HD.local 12.4.0 Darwin Kernel Version 12.4.0: Wed May 1 17:57:12 PDT 2013; root:xnu-2050.24.15~1/RELEASE_X86_64 x86_64
Build Date => Jul 4 2012 17:23:04
Configure Command => './configure' '--with-mysql=/...
//phpinfo() output continues here
I want to redirect this output from the standard display to a text file. I know this is bash syntax, but this is what I want to achieve in theory :
wp> phpinfo(); > phpinfo.txt
// phpinfo.txt now contains phpinfo() output
Is there any way to make this work?
You should be able to use the bash syntax on the command that opens the shell, try it there.
EX:
wp_shell > output.txt
Where "wp_shell" is the command that opens your prompt. You might be able to pass phpinfo directly to the prompt as well if you want to not have to open it, if there is a way to pass direct script to it as with the default php CLI.
How we run php script using Linux bash?
php file test.php
test.php contains:
<?php echo "hello\n" ?>
From the command line, enter this:
php -f filename.php
Make sure that filename.php both includes and executes the function you want to test. Anything you echo out will appear in the console, including errors.
Be wary that often the php.ini for Apache PHP is different from CLI PHP (command line interface).
Reference: https://secure.php.net/manual/en/features.commandline.usage.php
First of all check to see if your PHP installation supports CLI. Type: php -v. You can execute PHP from the command line in 2 ways:
php yourfile.php
php -r 'print("Hello world");'
There are two ways you can do this. One is the one already mentioned, i.e.:
php -f filename.php
The second option is making the script executable (chmod +x filename.php) and adding the following line to the top of your .php file:
#!/path/to/php
I'm not sure though if a webserver likes this, so if you also want to use the .php file in a website, that might not be the best idea. Still, if you're just writing some kind of script, it is easier to type ./path/to/phpfile.php than having to type php -f /path/to/phpfile.php every time.
Simply this should do:
php test.php
just run in linux terminal to get phpinfo .
php -r 'phpinfo();'
and to run file like index.php
php -f index.php
php -f test.php
See the manual for full details of running PHP from the command line
php test.php
should do it, or
php -f test.php
to be explicit.
I was in need to decode URL in a Bash script. So I decide to use PHP in this way:
$ cat url-decode.sh
#!/bin/bash
URL='url=https%3a%2f%2f1%2fecp%2f'
/usr/bin/php -r '$arg1 = $argv[1];echo rawurldecode($arg1);' "$URL"
Sample output:
$ ./url-decode.sh
url=https://1/ecp/
I'm trying to run a Python script using exec() from within PHP. My command works fine when I run it directly using a cmd window, but it produces an error when I run it from exec() in PHP.
My Python script uses NTLK to find proper nouns. Example command:
"C:\Python25\python.exe" "C:\wamp\projects\python\trunk\tests\find_proper_nouns.py" "I went to London this morning"
returns [London] when I run it from cmd, but throws an error in the Apache log when I run the same command from exec().The script is defintely getting run OK - if I change the python script to be print "Hello World" that is returned fine.
I know it's a big ask for anyone to know how to fix this NLTK error, but I could really do with any pointers as to why running it from exec is different to cmd. (The command is identical).
I'm running WAMP on Windows 7 with Apache 2.2.11.
Here's the error in the Apache log:
Traceback (most recent call last):
File "C:\wamp\projects\python\trunk\tests\find_proper_nouns_command_line.py", line 6, in <module>
parts = nltk.pos_tag(text)
File "C:\Python25\lib\site-packages\nltk\tag\__init__.py", line 62, in pos_tag
tagger = nltk.data.load(_POS_TAGGER)
File "C:\Python25\lib\site-packages\nltk\data.py", line 590, in load
resource_val = pickle.load(_open(resource_url))
File "C:\Python25\lib\site-packages\nltk\data.py", line 669, in _open
return find(path).open()
File "C:\Python25\lib\site-packages\nltk\data.py", line 451, in find
raise LookupError(resource_not_found)
LookupError:
**********************************************************************
Resource 'taggers/maxent_treebank_pos_tagger/english.pickle' not
found. Please use the NLTK Downloader to obtain the resource:
>>> nltk.download().
Searched in:
- 'C:\\nltk_data'
- 'D:\\nltk_data'
- 'E:\\nltk_data'
- 'C:\\Python25\\nltk_data'
- 'C:\\Python25\\lib\\nltk_data'
- 'C:\\Windows\\system32\\config\\systemprofile\\AppData\\Roaming\\nltk_data'
**********************************************************************
You have to run nltk.download() and choose 'maxent_treebank_pos_tagger'. You must make a python script and in it put:
#!/usr/bin/python
import nltk
nltk.download('maxent_treebank_pos_tagger');
then run it from command line. It will install the data files for the POS tagges, which you don't have installed yet.
After you do this it should work.
Your web server likely runs with other privileges than yourself. Possible problems include:
Path/file permission: can the web server user access the files it needs?
Different environment: are all necessary environment variables (PATH, Python-specific stuff, …) set?
Configuration: are there per-user configurations for Python or the module?
Tip: execute set in both the command prompt and from the PHP process and check the differences.
From the shell/terminal, you can use:
sudo python -m nltk.downloader maxent_treebank_pos_tagger
It will install maxent_treebank_pos_tagger (i.e. the standard treebank POS tagger in NLTK).