\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{lheau0}
\pdfinfo{
  /Title (mysqli.pdf)
  /Creator (Cheatography)
  /Author (lheau0)
  /Subject (mysqli Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{3ECF78}
\definecolor{LightBackground}{HTML}{F2FCF6}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{mysqli Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{lheau0} via \textcolor{DarkBackground}{\uline{cheatography.com/37678/cs/11823/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}lheau0 \\
  \uline{cheatography.com/lheau0} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 16th May, 2017.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{mysqli\_connect()}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Open a new connection to the MySQL server. \newline % Row Count 1 (+ 1)
`mysqli\_connect(host,username,password,dbname,port,socket);` \newline % Row Count 3 (+ 2)
Returns an object representing the connection to the MySQL server% Row Count 5 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{mysqli\_close()}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Close a previously opened database connection. \newline % Row Count 1 (+ 1)
\seqsplit{mysqli\_close(connection);} \newline % Row Count 2 (+ 1)
Returns TRUE on success. FALSE on failure% Row Count 3 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{mysqli\_query()}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Perform queries against the database. \newline % Row Count 1 (+ 1)
mysqli\_query(connection,query,resultmode); \newline % Row Count 3 (+ 2)
For successful SELECT, SHOW, DESCRIBE, or EXPLAIN queries it will return a mysqli\_result object. For other successful queries it will return TRUE. FALSE on failure.% Row Count 7 (+ 4)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{mysqli\_select\_db()}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Change the default database for the connection. \newline % Row Count 1 (+ 1)
\seqsplit{mysqli\_select\_db(connection},dbname); \newline % Row Count 3 (+ 2)
Returns TRUE on success. FALSE on failure.% Row Count 4 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{mysqli\_fetch\_array()}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Fetch a result row as a numeric array and as an associative array. \newline % Row Count 2 (+ 2)
\seqsplit{mysqli\_fetch\_array(result},resulttype); \newline % Row Count 4 (+ 2)
Returns an array of strings that corresponds to the fetched row. NULL if there are no more rows in result-set.% Row Count 7 (+ 3)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{mysqli\_fetch\_assoc()}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Fetch a result row as an associative array. \newline % Row Count 1 (+ 1)
\seqsplit{mysqli\_fetch\_assoc(result);} \newline % Row Count 2 (+ 1)
Returns an associative array of strings representing the fetched row. NULL if there are no more rows in result-set.% Row Count 5 (+ 3)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{mysqli\_num\_rows()}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Return the number of rows in a result set. \newline % Row Count 1 (+ 1)
\seqsplit{mysqli\_num\_rows(result);} \newline % Row Count 2 (+ 1)
Returns the number of rows in the result set.% Row Count 3 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Securiser un mot de passe}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{md5("String") \newline % Row Count 1 (+ 1)
fonction de hash md5 sur une chaine. \newline % Row Count 2 (+ 1)
Afin de sécuriser on peut rajouter un salt au début du mot de passe pour éviter aux hackers de retrouver les hash des mots de passe simple: \newline % Row Count 5 (+ 3)
\seqsplit{md5("sqd1548dsh4s52cc5fs6q"}.\$password); \newline % Row Count 6 (+ 1)
Cependant, si le hacker connait le salt il peut toujours retrouver. On peut donc générer un salt différent par utilisateur à partir d'un information statique, son id dans la base de donnée que l'on hash par exemple: \newline % Row Count 11 (+ 5)
\$passSecure = md5(md5(\$row{[}"id"{]}).\$pass); \newline % Row Count 12 (+ 1)
!! Nouvelle méthode php 5.5 !! \newline % Row Count 13 (+ 1)
\$hash = \seqsplit{password\_hash("mypassword"}, PASSWORD\_DEFAULT); \newline % Row Count 15 (+ 2)
Le mot de passe à enregistrer \newline % Row Count 16 (+ 1)
\seqsplit{password\_verify('mypassword'}, \$hash) \newline % Row Count 17 (+ 1)
Renvoie True si le mot de passe est correct par rapport au hash enregistré. \newline % Row Count 19 (+ 2)
les quotes simples sont importantes ! (probleme avec les double quotes si le mdp contient un \$)% Row Count 21 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{mysqli\_connect\_error()}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Return an error description from the last connection error, if any. \newline % Row Count 2 (+ 2)
\seqsplit{mysqli\_connect\_error();} \newline % Row Count 3 (+ 1)
Returns a string that describes the error. NULL if no error occurred.% Row Count 5 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{mysqli\_error()}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Return the last error description for the most recent function call, if any. \newline % Row Count 2 (+ 2)
\seqsplit{mysqli\_error(connection);} \newline % Row Count 3 (+ 1)
Returns a string with the error description. "" if no error occurred.% Row Count 5 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{mysqli\_fetch\_all()}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Fetch all rows and return the result-set as an associative array. \newline % Row Count 2 (+ 2)
\seqsplit{mysqli\_fetch\_all(result},resulttype); \newline % Row Count 4 (+ 2)
Returns an array of associative or numeric arrays holding the result rows.% Row Count 6 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Result type: Optional. Specifies what type of array that should be produced. Can be one of the following values: \newline MYSQLI\_ASSOC \newline MYSQLI\_NUM \newline MYSQLI\_BOTH}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{mysqli\_affected\_rows()}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Print out affected rows from different queries. \newline % Row Count 1 (+ 1)
\seqsplit{mysqli\_affected\_rows(connection);} \newline % Row Count 3 (+ 2)
An integer \textgreater{} 0 indicates the number of rows affected. 0 indicates that no records were affected. -1 indicates that the query returned an error.% Row Count 6 (+ 3)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{\seqsplit{mysqli\_real\_escape\_string()}}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Permet d'échapper une chaine de caractère \newline % Row Count 1 (+ 1)
\seqsplit{mysqli\_real\_escape\_string} ( mysqli \$link , string \$escapestr ) \newline % Row Count 3 (+ 2)
retourne la chaine échappé proprement pouvant être insérée dans la base% Row Count 5 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Session}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{session\_start(); \newline % Row Count 1 (+ 1)
A placer à chaque début de page où l'on souhaite conserver la session \newline % Row Count 3 (+ 2)
\$\_SESSION{[}"index"{]} \newline % Row Count 4 (+ 1)
Tableau associatif contenant les variables qui restent dans la session \newline % Row Count 6 (+ 2)
header("Location: page.php") \newline % Row Count 7 (+ 1)
Redirection du navigateur% Row Count 8 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Cookie}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Enregistrer un cookie sur le pc de l'utilisateur afin de garder une donnée sur lui (rester connecté par exemple) \newline % Row Count 3 (+ 3)
setcookie("nomElement", "Valeur", time() + 60{\emph{60}}24); \newline % Row Count 5 (+ 2)
Le cookie expire dans 1 h. \newline % Row Count 6 (+ 1)
\$\_COOKIE{[}"nomElement"{]} \newline % Row Count 7 (+ 1)
La valeur du cookie si il existe \newline % Row Count 8 (+ 1)
setcookie("nomElement", "", time() - 60*60); \newline % Row Count 9 (+ 1)
On vide la chaine et on met une date dans le passé pour supprimer un cookie.% Row Count 11 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}