Asked  2 Years ago    Answers:  5   Viewed   61 times

I'd like to be able to show a progress meter in a simple PHP script on the command line. Instead of seeing

Progress: 0%
Progress: 1%

I'd like just the number to change, and replace the previous number, much like git clone does for example Resolving deltas: 100% (8522/8522), done..

While searching for this I found the same question answered in Perl, which is perfect, but I couldn't find it in PHP. Is it possible? If not, I'll resort to C.


Update: If anyone's interested in the C++ version, it's here.



This can be done using ANSI Escape Sequences -- see here for a list.

In PHP, you'll use "33" when it's indicated ESC on that page.

In your case, you could use something like this :

echo "Progress :      ";  // 5 characters of padding at the end
for ($i=0 ; $i<=100 ; $i++) {
    echo "33[5D";      // Move 5 characters backward
    echo str_pad($i, 3, ' ', STR_PAD_LEFT) . " %";    // Output is always 5 characters long
    sleep(1);           // wait for a while, so we see the animation

I simplified a bit, making sure I always have 5 extra characters, and always displaying the same amount of data, to always move backwards by the same number of chars...

But, of course, you should be able to do much more complicated, if needed ;-)

And there are many other interesting escape sequences : colors, for instance, can enhance your output quite a bit ;-)

Wednesday, October 5, 2022

Use this command line instead:

C:WindowsSystem32Java.exe -version 2> C:Userstxt.txt

(note the additional 2.)

Java is writing the version information to standard error (channel 2) rather than standard output.

Sunday, August 14, 2022

Using the -c option, you can specify which php.ini file should be used :

php -c /etc/php.ini your-php-script.php

As a reference, see the output of php --help :

$ php --help
Usage: php [options] [-f] <file> [--] [args...]
       php [options] -r <code> [--] [args...]
       php [options] [-B <begin_code>] -R <code> [-E <end_code>] [--] [args...]
       php [options] [-B <begin_code>] -F <file> [-E <end_code>] [--] [args...]
       php [options] -- [args...]
       php [options] -a

  -a               Run as interactive shell
  -c <path>|<file> Look for php.ini file in this directory
  -n               No php.ini file will be used
  -d foo[=bar]     Define INI entry foo with value 'bar'
Thursday, December 8, 2022

Use phpunit --testdox
On the cli this will give you a very readable testdox format and allow you to see and fix your multiple test suites easily e.g.

PHPUnit 3.7.37 by Sebastian Bergmann.

Configuration read from /home/badass-project/tests/phpunit.xml

 [x] test getViewersForMonth throws for no valid date
 [x] test getViewersForMonth limits correctly
 [x] test getViewersForMonth only returns unprocessed records
 [ ] test getViewersForMonth marks retrieved records as processed
 [ ] test getViewersForMonth returns zero for no view data
 [x] test getViewersForMonth returns valid data

 [x] test getOrganisation returns orgs

I use it in combination with the stack traces from a vanilla PHPUnit run to quickly setup.

It also has the added benefit of replacing underscores in your test function names with spaces. eg test_getViewersForMonth_returns_valid_data becomes test getViewersForMonth returns zero for no view data which is more human readable.
N.B. Generally speaking if you're following the PSR coding standards you should be using camelCase for method names but for unit tests methods I break this rule to reduce cognitive load during TDD development.

Wednesday, December 21, 2022

Use autoflush with STDOUT:

local $| = 1; # Or use IO::Handle; STDOUT->autoflush;

print 'Progress: ';
my $progressString;
while ...
  # remove prev progress
  print "b" x length($progressString) if defined $progressString;
  # do lots of processing, update $counter
  $progressString = "$counter / $total"; # No more newline
  print $progressString; # Will print, because auto-flush is on
  # end of processing
print "n"; # Don't forget the trailing newline
Saturday, October 1, 2022
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