php

How to remove extension from string (only real extension!)

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I'm looking for a small function that allows me to remove the extension from a filename.

I've found many examples by googling, but they are bad, because they just remove part of the string with "." . They use dot for limiter and just cut string.

Look at these scripts,

$from = preg_replace('/.[^.]+$/','',$from);

 $from=substr($from, 0, (strlen ($from)) - (strlen (strrchr($filename,'.'))));

When we add the string like this:

This.is example of somestring

It will return only "This"...

The extension can have 3 or 4 characters, so we have to check if dot is on 4 or 5 position, and then remove it.

How can it be done?

Answers

Try this one:

$withoutExt = preg_replace('/\.[^.\s]{3,4}$/', '', $filename);

So, this matches a dot followed by three or four characters which are not a dot or a space. The "3 or 4" rule should probably be relaxed, since there are plenty of file extensions which are shorter or longer.

Saturday, December 10, 2022

konse-c631a8cf9e87

Here's what worked best for me when trying to script this (in case anyone else comes across this like I did):

$ pecl -d php_suffix=5.6 install <package>
$ pecl uninstall -r <package>

$ pecl -d php_suffix=7.0 install <package>
$ pecl uninstall -r <package>

$ pecl -d php_suffix=7.1 install <package>
$ pecl uninstall -r <package>

The -d php_suffix=<version> piece allows you to set config values at run time vs pre-setting them with pecl config-set. The uninstall -r bit does not actually uninstall it (from the docs):

vagrant@homestead:~$ pecl help uninstall
pecl uninstall [options] [channel/]<package> ...
Uninstalls one or more PEAR packages.  More than one package may be
specified at once.  Prefix with channel name to uninstall from a
channel not in your default channel (pecl.php.net)

Options:
  ...
  -r, --register-only
        do not remove files, only register the packages as not installed
  ...

The uninstall line is necessary otherwise installing it will remove any previously installed version, even if it was for a different PHP version (ex: Installing an extension for PHP 7.0 would remove the 5.6 version if the package was still registered as installed).

Monday, December 12, 2022

shankar_damodaran

You can apply str.replace to the Name column in combination with regular expressions:

import pandas as pd

# Example DataFrame
df = pd.DataFrame.from_dict({'Name'  : ['May21', 'James', 'Adi22', 'Hello', 'Girl90'],
                             'Volume': [23, 12, 11, 34, 56],
                             'Value' : [21321, 12311, 4435, 32454, 654654]})

df['Name'] = df['Name'].str.replace('d+', '')

print(df)

Output:

    Name   Value  Volume
0    May   21321      23
1  James   12311      12
2    Adi    4435      11
3  Hello   32454      34
4   Girl  654654      56

In the regular expression d stands for "any digit" and + stands for "one or more".

Thus, str.replace('d+', '') means: "Replace all occurring digits in the strings with nothing".

Sunday, November 6, 2022

alpha4

You can't override the function, but you can make an extension method for this:

public static class StringExtensions {
     public static bool ContainsAny(this string theString, IEnumerable<string> items)
     {
         // Add your logic
     }
}

You'd then call this just like a normal method on a string, provided you reference the assembly and include the namespace:

String helloworld = "Hello World";
String[] items = new string[] { "He", "el", "lo" };

if (helloworld.ContainsAny(items)) { 
   // Do something
}

(Granted, you could call this "Contains", like the standard string method, but I would prefer to give it a more explicit name so it's obvious what you're checking...)

Thursday, September 22, 2022

matthew_alltop

Never used any of those, but they look interesting..

Take a look at Gearman as well.. more overhead in systems like these but you get other cool stuff :) Guess it depends on your needs ..

Friday, November 11, 2022

the_falvert

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