Web Entwicklung

svg

• http://www.mediaevent.de/2013/04/svg-in-html-seiten/
• http://stackoverflow.com/questions/6793312/how-to-use-jquery-in-svg-scalable-vector-graphics

apache

Installation

apt-get install mysql-server mysql-client apache2 php5 php5-mysql libapache2-mod-php5 phpmyadmin
/usr/bin/mysqladmin -u root password 'enter-your-good-new-password-here'
/etc/init.d/apache2 restart

Konfiguration für die Entwicklung

/etc/php5/apache2/php.ini

error_reporting = E_ALL & ~E_DEPRECATED
display_errors = On

php

php4 nogoes in php5

fehlende Hochkommatas in Arrays

• php4

if ($quote) 
	$val[value]="'".addslashes($val[value])."'";
$this->fields.="`$val[key]`";
$this->values.="$val[value]";

• php5

if ($quote) 
	$val['value']="'".addslashes($val['value'])."'";
$this->fields.="`".$val['key']."`";
$this->values.="".$val['value']."";

SESSIONS

in php5 wurden folgende Funktionen entfernt

• session_is_registered
• session_register

function session_is_registered($x){
    if (isset($_SESSION['$x']))
        return true;
    else
        return false;
}

globale Variablen aus _POST, _GET, _FILES, _SESSIONS

• in php4 waren globale Variablen aus _POST, _GET, _FILES, _SESSIONS nicht im jeweiligen Array gekapselt

aus

$var_post
$var_get
$var_file
$var_sessions

wird

$_POST['var_post']
$_GET['var_get']
$_FILES['var_file']
$_SESSIONS['var_sessions']

pear

apt-get install php5-dev make php-pear

• http://blog.jerrevds.be/article/install-apc-or-pecl-debian
• wp:PEAR - PHP Extension and Application Repository
  • wp:PEAR#PECL - PHP Extension Community Library

cairo

Installation

pecl install cairo
pecl install cairo channel://pecl.php.net/cairo-0.3.2
echo "extension=cairo.so" >>  /etc/php5/apache2/php.ini
/etc/init.d/apache2 restart

• http://cairographics.org/cairo-php/

Beispiel

$s = new CairoImageSurface(CairoFormat::ARGB32, 400, 400);
$c = new CairoContext($s);
$c->fill();
$c->setSourceRGB(1, 0, 0);
$c->setLineWidth(50);
$c->arc(200, 200, 100, 0, 2 * M_PI);
$c->stroke();
$c->setSourceRGB(0, 0, 0.6);
$c->rectangle(0, 160, 400, 75);
$c->fill();
 
$s->writeToPng(dirname(__FILE__)  . '/test.png');

• Getting started with PHP Cairo graphics extension on XP

Probleme

falls das php nicht interpretiert wird, sondern stumpf ausgegeben wird

/etc/php5/apache2/php.ini da nicht "<?php" verwendet wird, muss der short_open_tag aktiviert werden!!!!

short_open_tag = On

• LaMp

mysql

Datenbank&Benutzer anlegen

mysql -u root -p

create database DATABASE;
create user 'USERNAME'@'localhost' identified by 'PASSWORD';
grant all on DATABASE.* to 'USERNAME'@'localhost';

Datenbank&Benutzer anzeigen

mysql -u root -p

show databases;
SELECT User,Host FROM mysql.user;
SHOW GRANTS FOR 'bloguser'@'localhost';

Datenbank&Benutzer löschen

mysql -u root -p

delete database DATABASE;
REVOKE ALL PRIVILEGES, GRANT OPTION FROM 'bloguser'@'localhost';
DROP USER 'bloguser'@'localhost';

export import

# export
mysqldump --single-transaction --default-character-set=utf8 -u _username_ -p _databasename_ > mysql.yyyymmdd.sql
# import
mysql -u _username_ -p _databasename_ < mysql.yyyymmdd.sql

drop all tables per bash

#!/bin/bash
MUSER="$1"
MPASS="$2"
MDB="$3"
MHOST="$4"
 
# Detect paths
MYSQL=$(which mysql)
AWK=$(which awk)
GREP=$(which grep)
 
if [ $# -ne 4 ]
then
	echo "Usage: $0 {MySQL-User-Name} {MySQL-User-Password} {MySQL-Database-Name}"
	echo "Drops all tables from a MySQL"
	exit 1
fi
 
TABLES=$($MYSQL -u $MUSER -h $MHOST -p$MPASS $MDB -e 'show tables' | $AWK '{ print $1}' | $GREP -v '^Tables' )
 
for t in $TABLES
do
	echo "Deleting $t table from $MDB database..."
	$MYSQL -u $MUSER -h $MHOST -p$MPASS $MDB -e "drop table \`$t\`"
done

• http://www.cyberciti.biz/faq/how-do-i-empty-mysql-database/