\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{Sara (lasago)}
\pdfinfo{
  /Title (dwcs-objetos.pdf)
  /Creator (Cheatography)
  /Author (Sara (lasago))
  /Subject (DWCS - Objetos 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}{BD91FF}
\definecolor{LightBackground}{HTML}{F6F1FF}
\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{DWCS - Objetos Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Sara (lasago)} via \textcolor{DarkBackground}{\uline{cheatography.com/70899/cs/18804/}}}
\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}Sara (lasago) \\
  \uline{cheatography.com/lasago} \\
  \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 29th May, 2019.\\
   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{tabularx}{17.67cm}{x{6.7353 cm} x{10.5347 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Conexión}}  \tn
% Row 0
\SetRowColor{LightBackground}
nueva conexión & \$conn = new mysqli("localhost", "root", "", "tiendao"); \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
mostrar error de conexión & \$conn-\textgreater{}connect\_error \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
matar conexión & die(); \tn 
% Row Count 6 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{8.635 cm} x{8.635 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Consultas desde PHP a BD}}  \tn
% Row 0
\SetRowColor{LightBackground}
crear consulta & \$query = \$conexion-\textgreater{}query(\$sql); \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
número de filas de la consulta & \$query-\textgreater{}num\_rows \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
mientras haya filas, guardar array & while( \$row = \$consulta-\textgreater{}fetch\_assoc() ) \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
imprimir valor dentro de la clave codigo & echo \$row{[}'codigo'{]} \tn 
% Row Count 8 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{8.1169 cm} x{9.1531 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Cookies y sesiones}}  \tn
% Row 0
\SetRowColor{LightBackground}
crear cookie & //nombre, valor, expires, path, domain, secure, httponly         setcookie('tema', \$tema, time() + (60 * 1)); \tn 
% Row Count 6 (+ 6)
% Row 1
\SetRowColor{white}
variable de cookie & \$\_COOKIE{[}'tema' \tn 
% Row Count 7 (+ 1)
% Row 2
\SetRowColor{LightBackground}
iniciar sesión & session\_start(); \tn 
% Row Count 8 (+ 1)
% Row 3
\SetRowColor{white}
valor de sesión & \$\_SESSION{[}'usuario'{]} = \$\_POST{[}'usuario'{]}; \tn 
% Row Count 10 (+ 2)
% Row 4
\SetRowColor{LightBackground}
regenerar id de sesión & \seqsplit{session\_regenerate\_id();} \tn 
% Row Count 12 (+ 2)
% Row 5
\SetRowColor{white}
deshacer sesión, detsruír sesión & session\_unset();     session\_destroy(); \tn 
% Row Count 14 (+ 2)
% Row 6
\SetRowColor{LightBackground}
declarar tiempo de sesión & \$\_SESSION{[}"timeout"{]} = time(); \tn 
% Row Count 16 (+ 2)
% Row 7
\SetRowColor{white}
 & \$sessionTTL = time() - \$\_SESSION{[}"timeout"{]}; \tn 
% Row Count 19 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{p{1.727 cm} x{15.543 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Rutas}}  \tn
% Row 0
\SetRowColor{LightBackground}
 & \seqsplit{spl\_autoload\_register('mi\_autoloader');} include\_once \$NombreClase . '.php'; \$sara = new Persona() \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{Namespace} \tn 
% Row Count 4 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{\_DIR\_} \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{alias} \tn 
% Row Count 6 (+ 1)
% Row 4
\SetRowColor{LightBackground}
 & define("RUTA", \seqsplit{realpath(dirname(\_\_FILE\_\_))}.DS ); \tn 
% Row Count 8 (+ 2)
% Row 5
\SetRowColor{white}
 & define("DS", DIRECTORY\_SEPARATOR); \tn 
% Row Count 9 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{p{1.727 cm} p{1.727 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{transaction}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{a} \tn 
% Row Count 1 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{p{1.727 cm} p{1.727 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{consultas}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{bloqueo query} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{transaction} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{bloqueo tabla} \tn 
% Row Count 3 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{4.3175 cm} x{12.9525 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{ficheros}}  \tn
% Row 0
\SetRowColor{LightBackground}
crear & \$f = fopen(\$obj-\textgreater{}ruta,'a+') \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
escribir & fwrite(\$f,serialize(\$o).PHP\_EOL); \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
leer & \$f = fopen(\$this-\textgreater{}ruta,'r'); \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
 & while(!feof(\$f))\{ \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
 & \$u = unserialize(fgets(\$f)); \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
 & \$a{[}{]} = \$u; \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{-} \tn 
% Row Count 8 (+ 1)
% Row 7
\SetRowColor{white}
 & \$no\_of\_lines = count(file(\$file)); \tn 
% Row Count 10 (+ 2)
% Row 8
\SetRowColor{LightBackground}
subir & \textless{}input type="file" id="docpicker"   accept=".doc,.docx,application/msword,application/vnd.openxmlformats-officedocument.wordprocessingml.document"\textgreater{} \tn 
% Row Count 15 (+ 5)
% Row 9
\SetRowColor{white}
 & \textless{}input type="file" accept="image/*,.pdf"\textgreater{} \tn 
% Row Count 17 (+ 2)
% Row 10
\SetRowColor{LightBackground}
 & \textless{}label for="file"\textgreater{}Choose file to upload\textless{}/label\textgreater{}    \textless{}input type="file" id="file" name="file" multiple\textgreater{} \tn 
% Row Count 21 (+ 4)
% Row 11
\SetRowColor{white}
 & accept="image/png" or accept=".png" \tn 
% Row Count 23 (+ 2)
% Row 12
\SetRowColor{LightBackground}
 & \textless{}input type="file" id="image\_uploads" name="image\_uploads" accept=".jpg, .jpeg, .png" multiple\textgreater{} \tn 
% Row Count 27 (+ 4)
% Row 13
\SetRowColor{white}
 & The selected files' are returned by the element's HTMLInputElement.files property, which is a FileList object containing a list of File objects. The FileList behaves like an array, so you can check its length property to get the number of selected files. \tn 
% Row Count 36 (+ 9)
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{4.3175 cm} x{12.9525 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{ficheros (cont)}}  \tn
% Row 14
\SetRowColor{LightBackground}
 & \textless{}?php \$target\_dir = "uploads/"; \$target\_file = \$target\_dir . basename(\$\_FILES{[}"fileToUpload"{]}{[}"name"{]}); \$uploadOk = 1; \$imageFileType = \seqsplit{strtolower(pathinfo(\$target\_file},PATHINFO\_EXTENSION)); // Check if image file is a actual image or fake image if(isset(\$\_POST{[}"submit"{]})) \{     \$check = getimagesize(\$\_FILES{[}"fileToUpload"{]}{[}"tmp\_name"{]});     if(\$check !== false) \{         echo "File is an image - " . \$check{[}"mime"{]} . ".";         \$uploadOk = 1;     \} else \{         echo "File is not an image.";         \$uploadOk = 0;     \} \} \tn 
% Row Count 18 (+ 18)
% Row 15
\SetRowColor{white}
 & if(\$imageFileType != "jpg" \&\& \$imageFileType != "png" \&\& \$imageFileType != "jpeg" \&\& \$imageFileType != "gif" ) \{     echo "Sorry, only JPG, JPEG, PNG \& GIF files are allowed.";     \$uploadOk = 0; \tn 
% Row Count 25 (+ 7)
% Row 16
\SetRowColor{LightBackground}
 & if \seqsplit{(file\_exists(\$target\_file))} \{     echo "Sorry, file already exists.";     \$uploadOk = 0; \} \tn 
% Row Count 29 (+ 4)
% Row 17
\SetRowColor{white}
 & if (move\_uploaded\_file(\$\_FILES{[}"fileToUpload"{]}{[}"tmp\_name"{]}, \$target\_file)) \{         echo "The file ". basename( \$\_FILES{[}"fileToUpload"{]}{[}"name"{]}). " has been uploaded.";     \} else \{         echo "Sorry, there was an error uploading your file.";     \} \} \tn 
% Row Count 38 (+ 9)
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{4.3175 cm} x{12.9525 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{ficheros (cont)}}  \tn
% Row 18
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{guardar} \tn 
% Row Count 1 (+ 1)
% Row 19
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{borrar} \tn 
% Row Count 2 (+ 1)
% Row 20
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{obtener log} \tn 
% Row Count 3 (+ 1)
% Row 21
\SetRowColor{white}
cerrar stream & fclose(\$f); \tn 
% Row Count 5 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{4.4902 cm} x{12.7798 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{error}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{personalizados} & if(\$\_REQUEST{[}'ar'{]}=="") throw new Error(); \tn 
% Row Count 2 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{3.454 cm} x{13.816 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{php-ini}}  \tn
% Row 0
\SetRowColor{LightBackground}
 & \textless{}? phpinfo(); ?\textgreater{} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
log & en ficheros \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{constantes} & en ficheros \tn 
% Row Count 4 (+ 2)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{17.67cm}}{htaccess} \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
 & file\_uploads = On \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
 & \textless{}form action="upload.php" method="post" enctype="multipart/form-data"\textgreater{}     Select image to upload:     \textless{}input type="file" name="fileToUpload" id="fileToUpload"\textgreater{}     \textless{}input type="submit" value="Upload Image" name="submit"\textgreater{} \tn 
% Row Count 13 (+ 7)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{6.3899 cm} x{10.8801 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Controlador}}  \tn
% Row 0
\SetRowColor{LightBackground}
enviar a misma página & \textless{}form action="index.php" method="POST"\textgreater{} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
name="enviar" en submit & if(isset(\$\_REQUEST{[}'enviar'{]}))\{ \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
 & \textless{}input type="text" name="url" placeholder="Nombre"\textgreater{}\textless{}br/\textgreater{}             \textless{}input type="number" name="edad" placeholder="Edad"\textgreater{}\textless{}br/\textgreater{}             \textless{}input type="number" name="edad" placeholder="Edad"\textgreater{}\textless{}br/\textgreater{}             \textless{}input type="submit" name="enviar" value="Registrar"\textgreater{} \tn 
% Row Count 15 (+ 11)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{3.454 cm} x{13.816 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Excepciones con ficheros}}  \tn
% Row 0
\SetRowColor{LightBackground}
c & if(filter\_var(\$\_REQUEST{[}'email'{]},FILTER\_VALIDATE\_EMAIL)===false) throw new Error\_Email(); \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
c & catch(Error\_Email \$e)\{echo \$e-\textgreater{}errorMessage();\$e-\textgreater{}grabar();\} \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
e e & else throw new Exception( \tn 
% Row Count 6 (+ 1)
% Row 3
\SetRowColor{white}
e e & \seqsplit{include\_once('Fichero.php');}     class Error\_Email extends Exception\{ \tn 
% Row Count 9 (+ 3)
% Row 4
\SetRowColor{LightBackground}
e e & public function errorMessage()\{             return 'Error \tn 
% Row Count 11 (+ 2)
% Row 5
\SetRowColor{white}
e e grabar & \$fichero = new Fichero('error.log');             \$fichero-\textgreater{}write('Email -\textgreater{} Linea:'.\$this-\textgreater{}getLine().'Fichero'.\$this-\textgreater{}getFile()); \tn 
% Row Count 16 (+ 5)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{17.67cm}}{finally} \tn 
% Row Count 17 (+ 1)
% Row 7
\SetRowColor{white}
f wr & \$f = fopen(\$this-\textgreater{}ruta,'a+'); \tn 
% Row Count 18 (+ 1)
% Row 8
\SetRowColor{LightBackground}
 & fwrite(\$f,serialize(\$o).PHP\_EOL); \tn 
% Row Count 20 (+ 2)
% Row 9
\SetRowColor{white}
f read & \$f = fopen(\$this-\textgreater{}ruta,'r');             while(!feof(\$f))\{                 \$u = unserialize(fgets(\$f));                 \$a{[}{]} = \$u; \tn 
% Row Count 25 (+ 5)
% Row 10
\SetRowColor{LightBackground}
c & for(\$i=0;\$i\textless{}count(\$o)-1;\$i++)\{             \$t.="\textless{}tr\textgreater{}\textless{}td\textgreater{}".\$o{[}\$i{]}-\textgreater{}nombre."\textless{}/td\textgreater{}             (\$o)\{     \textless{}td\textgreater{}".\$o{[}\$i{]}-\textgreater{}edad."\textless{}/td\textgreater{} return \$t; \tn 
% Row Count 30 (+ 5)
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{3.454 cm} x{13.816 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{Excepciones con ficheros (cont)}}  \tn
% Row 11
\SetRowColor{LightBackground}
 & \$persona=new Persona(\$nombre,\$edad,\$dni); // CLASE PERSONA         \$fichero=new Fichero('persona.txt');         \$fichero-\textgreater{}write(\$persona);         echo generarTabla(\$fichero-\textgreater{}read()); \tn 
% Row Count 6 (+ 6)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}



\end{document}