\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{davidsykora}
\pdfinfo{
  /Title (php-essentials.pdf)
  /Creator (Cheatography)
  /Author (davidsykora)
  /Subject (PHP Essentials 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}{8ABDFF}
\definecolor{LightBackground}{HTML}{F0F6FF}
\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{PHP Essentials Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{davidsykora} via \textcolor{DarkBackground}{\uline{cheatography.com/43180/cs/12892/}}}
\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}davidsykora \\
  \uline{cheatography.com/davidsykora} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 6th October, 2017.\\
   Updated 21st September, 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{4.96 cm} x{3.04 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Language basics}}  \tn
% Row 0
\SetRowColor{LightBackground}
script start & \textless{}?php \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
script end & ?\textgreater{} or nothing \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
command termination & ; \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
inline comment & `// simple oneliner` \tn 
% Row Count 5 (+ 2)
% Row 4
\SetRowColor{LightBackground}
block comment & `/* multiline text */` \tn 
% Row Count 7 (+ 2)
% Row 5
\SetRowColor{white}
run script from file (if error throws warning) & \seqsplit{`include('script}.php');` \tn 
% Row Count 9 (+ 2)
% Row 6
\SetRowColor{LightBackground}
run script from file (errors are fatal) & \seqsplit{`require('script}.php');` \tn 
% Row Count 11 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4.24 cm} x{3.76 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Variables}}  \tn
% Row 0
\SetRowColor{LightBackground}
declaration without value & `\$variableName;` \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
string declaration & `\$string = "some text";` \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
integer declaration & `\$int = 123;` \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
double declaration & `\$doble = 1.2` \tn 
% Row Count 6 (+ 1)
% Row 4
\SetRowColor{LightBackground}
empty array declaration & `\$array = array();` \tn 
% Row Count 8 (+ 2)
% Row 5
\SetRowColor{white}
array with elements declaration & `\$a = array("text",1,2.3);` \tn 
% Row Count 10 (+ 2)
% Row 6
\SetRowColor{LightBackground}
boolean declaration & `\$bool = true;` \tn 
% Row Count 11 (+ 1)
% Row 7
\SetRowColor{white}
null declaration & `\$empty = null;` \tn 
% Row Count 12 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.92 cm} x{4.08 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Variable operations}}  \tn
% Row 0
\SetRowColor{LightBackground}
addition & `\$int1 + \$int2` -\textgreater{} 12 \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
divison & `6 / 3` -\textgreater{} 2 \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
multiplication & `6 * 6` -\textgreater{} 36 \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
exponentiation & `2 ** 4` -\textgreater{} 16 \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
substraction & `2 - 1` -\textgreater{} 1 \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
string + int (string get converted) \#1 & `"13shits" + 13` -\textgreater{} 26 \tn 
% Row Count 8 (+ 2)
% Row 6
\SetRowColor{LightBackground}
string + int (string get converted) \#1 & `"shitsof13" + 13` -\textgreater{} 13 \tn 
% Row Count 10 (+ 2)
% Row 7
\SetRowColor{white}
string + string & `"2dogs" + "5dogs"` -\textgreater{} 7 \tn 
% Row Count 12 (+ 2)
% Row 8
\SetRowColor{LightBackground}
strings {\bf{concat}} & `\$str1 . \$str2` -\textgreater{} hello stranger! \tn 
% Row Count 14 (+ 2)
% Row 9
\SetRowColor{white}
string and int {\bf{concat}} & `"numero uno - " . 1;` -\textgreater{} numero uno - 1 \tn 
% Row Count 16 (+ 2)
% Row 10
\SetRowColor{LightBackground}
{\bf{unset}} - delete variable & `unset(\$variable);` \tn 
% Row Count 18 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{`\$int1 = 5;` \newline `\$int2 = 7;` \newline `\$str1 = "hello ";` \newline `\$str2 = " stranger!";`}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Flow control}}  \tn
% Row 0
\SetRowColor{LightBackground}
simple condition & `if (true)\{\{\{nl\}\}echo("condition pass");\{\{nl\}\}\}` \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
is var1 equal to var2? & `if (\$var1 == \$var2)\{\{\{nl\}\}echo("it is.");\{\{nl\}\}\} else \{\{\{nl\}\}echo("it ins't.")\{\{nl\}\}\}` \tn 
% Row Count 8 (+ 5)
% Row 2
\SetRowColor{LightBackground}
two vars comperation & `(\$var1 == \$var2)` \tn 
% Row Count 9 (+ 1)
% Row 3
\SetRowColor{white}
is var equal to int? & `(\$var1 == 4)` \tn 
% Row Count 10 (+ 1)
% Row 4
\SetRowColor{LightBackground}
is var lower than int? & `(\$int \textless{} 4)` \tn 
% Row Count 12 (+ 2)
% Row 5
\SetRowColor{white}
is var bigger than int? & `(\$int \textgreater{} 4)` \tn 
% Row Count 14 (+ 2)
% Row 6
\SetRowColor{LightBackground}
is var lower than 5 and not equal to zero & `(\$int \textless{} 5 \&\& \$int != 0)` \tn 
% Row Count 17 (+ 3)
% Row 7
\SetRowColor{white}
is string equal to string? & `(\$str == "dangerous")` \tn 
% Row Count 19 (+ 2)
% Row 8
\SetRowColor{LightBackground}
is num 1 or 4? & `(\$num == 1 || \$num == 4)` \tn 
% Row Count 21 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Array operations}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{get}} array element by index & `\$array{[}index{]}` \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
{\bf{push}} data to {\bf{end}} of array & \seqsplit{`array\_push(\$array}, \$data);` OR `\$array{[}{]} = \$data;` \tn 
% Row Count 5 (+ 3)
% Row 2
\SetRowColor{LightBackground}
{\bf{push}} data to {\bf{specific}} index of array & `\$array{[}'myColor'{]} = "\#FFF";` \tn 
% Row Count 8 (+ 3)
% Row 3
\SetRowColor{white}
{\bf{remove \& get last}} element of array & \seqsplit{`array\_pop(\$array);`} \tn 
% Row Count 10 (+ 2)
% Row 4
\SetRowColor{LightBackground}
get {\bf{count}} of elements in array & `count(\$array);` \tn 
% Row Count 12 (+ 2)
% Row 5
\SetRowColor{white}
is specific value in array? & `in\_array(\$needle, \$array);` \tn 
% Row Count 14 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Output}}  \tn
% Row 0
\SetRowColor{LightBackground}
simple print & `echo(\$variable . " and some text");` \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
simple print \#2 & `echo 1;` \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
simple print \#3 (must be without parentheses) & `echo 1,2;` -\textgreater{} 12 \tn 
% Row Count 6 (+ 3)
% Row 3
\SetRowColor{white}
print multiple lines & `echo("line1\textbackslash{}nline2\textbackslash{}n");` \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
print variable type and data & `print\_r(\$var);` \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
print variable type and data (detailed) & `var\_dump(\$var);` \tn 
% Row Count 12 (+ 2)
% Row 6
\SetRowColor{LightBackground}
conditional printing & `echo(\$var1 == 1 ? "its 1!" : "its not 1!");` \tn 
% Row Count 15 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Loops}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{for}} - classic loop (start instruction; condition on start of each round;end instruction of each round ) & `for (\$i = 1; \$i \textless{}= 10; \$i++) \{\{\{nl\}\}echo \$i;\{\{nl\}\}\}` \tn 
% Row Count 6 (+ 6)
% Row 1
\SetRowColor{white}
{\bf{foreach}} - do something for each element in array & `foreach(\$array as \$arrayElement)\{\{\{nl\}\}var\_dump(\$arrayElement;)\{\{nl\}\}\}` \tn 
% Row Count 10 (+ 4)
% Row 2
\SetRowColor{LightBackground}
{\bf{while}} - do something if cond is true again and again if is still true & `while(true)\{\{\{nl\}\}echo("infinity!");\{\{nl\}\}\}` \tn 
% Row Count 14 (+ 4)
% Row 3
\SetRowColor{white}
{\bf{break}} - escape from loop & `break;` \tn 
% Row Count 16 (+ 2)
% Row 4
\SetRowColor{LightBackground}
{\bf{continue}} - skip current round & `continue;` \tn 
% Row Count 18 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.6 cm} x{4.4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{PHP Filesystem Functions}}  \tn
% Row 0
\SetRowColor{LightBackground}
check if file exists & \seqsplit{`file\_exists("/root/file}.txt");` \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
open a file for reading only & `\$file = fopen("./../file.txt", "r");` \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
get size of file in bytes & \seqsplit{`filesize("file.txt");`} \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
print all bytes from fopened file & `echo fread(\$file, \seqsplit{filesize("file.txt"));`} \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
open a file for reading only & `\$file = fopen("./../file.txt", "w");` \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
write to fopened file & `fwrite(\$file, "some text\textbackslash{}n");` \tn 
% Row Count 12 (+ 2)
% Row 6
\SetRowColor{LightBackground}
close file after all operations & `fclose(\$file);` \tn 
% Row Count 14 (+ 2)
% Row 7
\SetRowColor{white}
oneline file write & \seqsplit{`file\_put\_contents(\$filename}, \$data);` \tn 
% Row Count 16 (+ 2)
% Row 8
\SetRowColor{LightBackground}
oneline file read & `\$fileContent = \seqsplit{file\_get\_contents(\$fileName);`} \tn 
% Row Count 19 (+ 3)
% Row 9
\SetRowColor{white}
fopen() modes (second argument) & {\bf{r}} = Read\{\{nl\}\}{\bf{r+}} = Read,write and prepend\{\{nl\}\}{\bf{w}} = Write, truncate\{\{nl\}\}{\bf{w+}} = Read and write, truncate a Write, append\{\{nl\}\}{\bf{a+}} = Read and write, append \tn 
% Row Count 27 (+ 8)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Useful variables}}  \tn
% Row 0
\SetRowColor{LightBackground}
\$\_SERVER & Server and execution environment information \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\$\_SERVER{[}'SERVER\_ADDR'{]} & Server IP \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\$\_SERVER{[}'REQUEST\_METHOD'{]} & Which request method was used to access the page; i.e. 'GET', 'HEAD', 'POST', 'PUT' \tn 
% Row Count 10 (+ 5)
% Row 3
\SetRowColor{white}
\$\_SERVER{[}'HTTP\_USER\_AGENT'{]} & User-Agent: header from the current request \tn 
% Row Count 13 (+ 3)
% Row 4
\SetRowColor{LightBackground}
\$\_SERVER{[}'REMOTE\_ADDR'{]} & The IP address from which the user is viewing the current page \tn 
% Row Count 17 (+ 4)
% Row 5
\SetRowColor{white}
\_\_FILE\_\_ & The full path and filename of the current script file \tn 
% Row Count 20 (+ 3)
% Row 6
\SetRowColor{LightBackground}
\_\_DIR\_\_ & The directory of the file \tn 
% Row Count 22 (+ 2)
% Row 7
\SetRowColor{white}
\_\_LINE\_\_ & Current line number in script file \tn 
% Row Count 24 (+ 2)
% Row 8
\SetRowColor{LightBackground}
\$\_GET & Associative array of variables passed to the current script via the URL parameters \tn 
% Row Count 29 (+ 5)
% Row 9
\SetRowColor{white}
\$\_POST & An associative array of variables passed to the current script via the HTTP POST method when using \seqsplit{application/x-www-form-urlencoded} or multipart/form-data as the HTTP Content-Type in the request \tn 
% Row Count 39 (+ 10)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Useful variables (cont)}}  \tn
% Row 10
\SetRowColor{LightBackground}
\$\_FILES & An associative array of items uploaded to the current script via the HTTP POST method \tn 
% Row Count 5 (+ 5)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}