I'm new to PHP. How I can use blob in CodeIgniter? What is the best option for sending an image from the server to a client (RESTful) using codeigniter?
I have tried the following:
$newPerson = new Person();
$newPerson->id = 1;
$newPerson->firstName = "Qutfullo";
$newPerson->lastName = "Ochilov";
$image=new Imagick();
$image->setImage("my.jpg");
$newPerson->image=$image->getImageBlob();
$this->response($newPerson);
But I get an exception:
Fatal error: Class 'Imagick' not found.
Thanks for help!
Hope below snippet can give you the idea that you are missing library --
Try below code if on ubuntu --
php -m | grep imagick.
If the result is empty then issue below commands from terminal
sudo apt-get remove --purge php5-imagick && sudo apt-get install php5-imagick
if on window sserver follow below link instructions that might be useful
Install Imagick for PHP and Apache on Windows
The error is because of your server have no Image Magic Software suite. First you install it in your server.
For install Image Magic in Unix/Linux
Download ImageMagick.tar.gz from www.imagemagick.org
Unpack the distribution with this command:
tar xvzf ImageMagick.tar.gz
Next configure and compile ImageMagick:
cd ImageMagick-6.9.3
./configure
make
To install, type
sudo make install
You may need to configure the dynamic linker run-time bindings:
sudo ldconfig /usr/local/lib
Install from Windows Source
Download ImageMagick-windows.zip from www.imagemagick.org
Unzip and Install
unzip ImageMagick-windows.zip
Please refer this link for installation.
If you are developing a RESTFull API, The best way is to send the image URL as the response.
Related
Background
I use a RedHat machine without root access, no access to the yum packet manager and no Docker support. This is the policy unfortunately at my work.
I have configured Apache and PHP using a tar file in a folder. Also done same for MongoDB, now I try to configure the PHP drivers for MongoDB according to these instructions:
https://docs.mongodb.com/drivers/php/
However I get stuck on the first bullet:
sudo pecl install mongodb
Problem
Do I need PECL? Can the extension be downloaded manually, and added to PHP?
I have tried to download the mongodb extension manually from:
https://pecl.php.net/package/mongodb
How to compile it mongodb.so? I tried to run pecl on a machine where I have root access then I saw it downloaded the mongodb-1.10.0.tgz and run make (in output when installing).
When I unpack the tgz file manually, I am not able to run make. How to use the makefile.frag? How to run make?
Here is a link on how to build mongodb.so:
https://www.php.net/manual/en/mongodb.installation.manual.php
git clone https://github.com/mongodb/mongo-php-driver.git
cd mongo-php-driver
git submodule update --init
phpize
./configure
make all
sudo make install
You can also unpack the mongodb-1.10.0.tgz file with:
tar -xvf mongodb-1.10.0.tgz
phpize
make all
sudo make install
I need SQLite minimum version 3.8 to support a MediaWiki install on Amazon EC2. Amazon Linux is based on CentOS and the latest version available in the yum repository is SQLite 3.7.17.
The downloads available from sqlite.org don't include 64-bit Linux. There is a GitHub repository that has a prebuilt 64-bit version, however it's only the command line version. I put it at /usr/bin:
$ which sqlite3
/usr/bin/sqlite3
$ sqlite3 --version
sqlite3: /lib64/libtinfo.so.5: no version information available (required by sqlite3)
3.26.0 2018-12-01 12:34:55 bf8c1b2b7a5960c282e543b9c293686dccff272512d08865f4600fb58238b4f9
But MediaWiki still complains I have SQLite 3.7.17 installed. When I test it I get:
$ cat x.php
<?php
print_r(SQLite3::version());
?>
Run it:
$ php7 x.php
Array
(
[versionString] => 3.7.17
[versionNumber] => 3007017
)
I am guessing this is because of these libraries:
$ sudo find / -name "libsqlite*"
/usr/lib64/libsqlite3.so.0
/usr/lib64/libsqlite3.so.0.8.6
How can I download/rebuild or otherwise install a later version of these SQLite libraries?
The easiest option I found was to build it myself. Tested on Amazon Linux release 2 (Karoo).
Download the latest source code with the configure script from here. Currently this is:
curl https://www.sqlite.org/2020/sqlite-autoconf-3320300.tar.gz | tar xzf -
Go into the created directory and create the Makefile with our system dependant options:
cd ./sqlite-autoconf-3320300 && ./configure
Build the binary
make
Install it
sudo make install
Clean up
cd .. && rm -r ./sqlite-autoconf-3320300
Note: It's far from ideal to do this without a proper RPM package. If you update sqlite through yum, you will overwrite you manually built version.
Adding on to #halbgut answer, with some changes:
Download the latest source code with the configure script from here. Currently this is:
curl https://www.sqlite.org/2020/sqlite-autoconf-3320300.tar.gz | tar xzf -
Go into the created directory and create the Makefile with our system dependent options:
cd ./sqlite-autoconf-3320300 && ./configure
Build the binary
make
Install it
sudo make install
Now, you have created the sqlite3 file. You need to replace them everywhere you find the file sqlite3.
To find all these places - run the following command:
whereis sqlite3
sqlite3: /usr/bin/sqlite3 /usr/local/bin/sqlite3 /usr/include/sqlite3.h /opt/c9/bin/sqlite3 /usr/share/man/man1/sqlite3.1.gz
Now within the sqlite source folder ./sqlite-autoconf-3320300, find the sqlite3, sqlite3.h files and replace with the following cp command
sudo cp sqlite-autoconf-3320300/sqlite3 /usr/local/bin/sqlite3
sudo cp sqlite-autoconf-3320300/sqlite3 /usr/local/bin/sqlite3
sudo cp sqlite-autoconf-3320300/sqlite3 /opt/c9/bin/sqlite3 {I am using c9, hence this file, figure out what file is in the opt/ dir)
sudo cp sqlite-autoconf-3320300/sqlite3.h /usr/include/sqlite3.h
Once done, you would have upgraded both env and python-env. Now you need to just define the path to it. For it, use the local/lib in usr.
export LD_LIBRARY_PATH="/usr/local/lib"
Now you should have this :
$ python -c "import sqlite3; print(sqlite3.sqlite_version)"
3.23.3
$ sqlite3 --version
3.32.3
If you just need the sqlite3 binary, the SQLite amalgamation also works perfectly on Amazon Linux 2. For SQLite 33.9.04 (or others from the SQLite Download section):
wget "https://www.sqlite.org/2022/sqlite-amalgamation-3390400.zip"
unzip "sqlite-amalgamation-3390400.zip"
cd "sqlite-amalgamation-3390400"
gcc shell.c sqlite3.c -lpthread -ldl -lm -o sqlite3
And then use it as you would any other software compiled from source:
ln -n ./sqlite3 ${wherever}/sqlite3
export PATH="${wherever}:$PATH"
SQLite docs give a good explanation of further options if you need them.
Get the latest sqlite3 download link from https://www.sqlite.org/download.html
and update the link given in the WGET bash command example shown below.
Example:
wget https://www.sqlite.org/2022/sqlite-tools-linux-x86-3400000.zip
unzip sqlite-tools*.zip
cd sqlite-tools*
sudo cp sql* /usr/local/bin/ # Usually this directory is empty, so no need to worry about overwriting files
cd ~
sudo yum update -y
sudo amazon-linux-extras install epel -y
sudo yum install glibc.i686 -y
sqlite3 --version
I installed node on my Ubuntu 14.04 machine with:
apt-get install node
However, when I run
node -v
there is no output.
I then tried apt-get install nodejs, and when I run nodejs -v I get v0.10.25.
I'm not really sure what I'm doing wrong to get node working.
My PHP script requires node.js and my check keeps failing:
if(preg_match("/^v\d+.\d+.\d+$/", `node -v`) === 0){
exit_json([
"error" => "Node isn't installed on this machine."
]);
}
How can I correctly install node.js on 14.04? I used digital ocean's tutorial.
If you are using Node.js as a developer in you developing machine I advise you to install it using NVM.
Follow the instructions than add the following to your ~/.bashrc file:
source ~/.nvm/nvm.sh
After type
$source ~/.bashrc
This will allow you to use NVM to install the versions you want:
$nvm install 10
You can install older versions and use whatever one you have installed by typing:
$nvm use 8.4.0
If you want to execute it, make sure you're specifying the full path (or make sure node is in the path.)
Also, that's a very, very old version of Node.js you've installed.
Try install like this :
curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -
sudo apt-get install -y nodejs
Is there any documentation about V8JS?
Do I need only standard PHP or some extensions to use V8JS?
I'll be very thankful for any information about V8JS in PHP.
Requirements
PHP 5.3.3+ and V8 library and headers installed in proper paths.
Install
I've found this docs on the v8js class.
The docs out there aren't complete or are not updated. I'm actually currently in the process of doing v8JS myself and it took me a few days to get the back end libs sorted out. First off, you must know that you can't do this is you have python < 2.7
Here is my install notes that I'm putting together for our dev vagrant boxes running centos 7.
cd /tmp
# Install depot_tools first (needed for source checkout)
git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
export PATH=`pwd`/depot_tools:"$PATH"
# Download v8
fetch v8
cd v8
# Build (disable snapshots for V8 > 4.4.9.1)
make native library=shared snapshot=off -j8
# Install to /usr
sudo mkdir -p /usr/lib /usr/include
sudo cp out/native/lib.target/lib*.so /usr/lib64/
sudo cp -R include/* /usr/include
echo -e "create /usr/lib64/libv8_libplatform.a\naddlib out/native/obj.target/tools/gyp/libv8_libplatform.a\nsave\nend" | sudo ar -M
cd /usr/lib64
sudo chrpath -r '$ORIGIN' libv8.so
========================
Compile php-v8js itself
========================
cd /tmp
git clone -b master https://github.com/phpv8/v8js.git
cd v8js
phpize
./configure
make
make test
sudo make install
sudo service httpd restart
A note on the line make native library=shared snapshot=off -j8. I had the compile stop on me a couple times, I just restarted it. I'm not sure why it stopped, but it restarted just fine and completed just fine.
After that is done, you need to create the php extension file /etc/php.d/v8js.ini with the following content
; Enable v8js extension module
extension=v8js.so
Run the following to make sure it is installed correctly
php -r "phpinfo();" | grep v8js
If you get output back and no errors you're good to go.
I am using a Linux Server and am trying to install Pdftk, but I am problems trying to figure out what exactly to do.
I found the following documentation on how to install it, but they refer mostly to installing it on the local Windows machine.
They are:
http://www.andrewheiss.com/blog/2009/07/29/installing-pdftk-php/
http://www.accesspdf.com/pdftk/#packages
Can someone help me unserstand exactly what files I need to place where on my server so I can refer to pdftk?
Pdftk is a version of iText which has been converted from Java to c++ and rebuilt with a command-line bridge for easy access from PHP applications.
To build pdftk on Redhat / CentOS please follow the below instructions.
ssh [server to install pdftk on]
Now that we are in the server we need to create the directories to store pdftk.
cd /
sudo mkdir extra
cd extra
sudo mkdir src
cd src
sudo wget http://www.pdfhacks.com/pdftk/pdftk-1.41.tar.gz
sudo tar zxvf pdftk-1.41.tar.gz
cd pdftk-1.41/pdftk
Now we need to install the gcj libraries.
sudo yum install java-1.4.2-gcj-compat-devel.i386
The gcc-c++ library doesn't get installed with the gcj package so we will install it now, so we don't get an error halfway through the compile process.
sudo yum install gcc-c++
If you compile the application right now you will receive a warning that tmpnam is dangerous to use and you should use mkstemp.
sudo vi report.cc
Run this from inside VI to do a search and replace for the tmpnam method.
:%s/tmpnam(/mkstemp(/g
Press escape and save the changes with
:wq!
Now that we have all the packages installed, we are going to start compiling pdftk-1.41
from /extra/src/pdftk-1.41/pdftk run the following command
sudo make -f Makefile.RedHat
This will kick off the build process for compiling and converting the java file to c++. This could take SEVERAL minutes to convert iText to c++. Go grab yourself a margarita from our new margarita machine in the break room :).
Now with the pdftk file created we will want to copy it to the /bin directory so that we can run it from anywhere.
sudo cp pdftk /usr/local/bin
Let's make sure the build was successful and run
pdftk --version
As of 2020, things are different now. CentOS 6 is stepping out and pdftk can only support CentOS 5/6. GCJ on CentOS 7 is removed, so installing from source is not easy too. But we have docker now:
FROM centos:centos6
RUN yum install -y https://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/pdftk-2.02-1.el6.x86_64.rpm
Then build with docker build . -t pdftk and run as:
docker run -it --rm -v $PWD:/data --workdir /data pdftk pdftk ./input.pdf output ./output.pdf
The example above can repair a pdf file missing a dozen of KB of data if you are lucky.
As mentioned by #rsc, pdftk-java will be available for Rocky Linux, but currently (2021.10.28), still cannot install it via yum.
Fortunately, there is a built command for x86_64 GNU/Linux systems, which does not require any runtime dependencies. So we can use it as follows
# the version number might be updated, check https://gitlab.com/pdftk-java/pdftk
wget https://gitlab.com/pdftk-java/pdftk/-/jobs/1527259632/artifacts/raw/build/native-image/pdftk
chmod +x pdftk
./pdftk ...
It works well in the server with the following system info,
$ lsb_release -a
LSB Version: :core-4.1-amd64:core-4.1-noarch
Distributor ID: Rocky
Description: Rocky Linux release 8.4 (Green Obsidian)
Release: 8.4
Codename: GreenObsidian
As of 2021, there is pdftk-java: A port of the original GCJ-based PDFtk to Java, which is currently on the way to the repositories for Fedora 33+ and EPEL 7+ (latter for CentOS, RHEL or Rocky), allowing yum install pdftk-java to succeed (once the package reached the stable repositories).
Edit: The pdftk-java package is in the stable repositories since yesterday, 2021-10-29.