\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{WildRyc}
\pdfinfo{
  /Title (cst8285.pdf)
  /Creator (Cheatography)
  /Author (WildRyc)
  /Subject (CST8285 Cheat Sheet)
}

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% This two commands together give roughly
% the right line height in the tables
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% Commands
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\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
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\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
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\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
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\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{CST8285 Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{WildRyc} via \textcolor{DarkBackground}{\uline{cheatography.com/171551/cs/36006/}}}
\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}WildRyc \\
  \uline{cheatography.com/wildryc} \\
  \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 10th December, 2022.\\
   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*}{3}

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\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{GIT commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
`git init` & initialize an existing directory \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`git clone {[}url{]}` & retrieve an entire repository \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`git status` & show modified files in working directory \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
`git add {[}file{]}` & add a file as it looks now to your next commit \tn 
% Row Count 9 (+ 3)
% Row 4
\SetRowColor{LightBackground}
`git reset {[}file{]}` & unstage af ile while retaining the changs in working directory \tn 
% Row Count 12 (+ 3)
% Row 5
\SetRowColor{white}
`git diff` & diff of what is changed but not staged \tn 
% Row Count 14 (+ 2)
% Row 6
\SetRowColor{LightBackground}
`git commit -m "{[}commit message{]}"` & commit your staged content as a new commit snapshot \tn 
% Row Count 17 (+ 3)
% Row 7
\SetRowColor{white}
`git branch` & list your branches, current has a * \tn 
% Row Count 19 (+ 2)
% Row 8
\SetRowColor{LightBackground}
`git branch {[}branch name{]}` & create a new branch at the current commit \tn 
% Row Count 21 (+ 2)
% Row 9
\SetRowColor{white}
`git checkout` & switch to another branch \tn 
% Row Count 23 (+ 2)
% Row 10
\SetRowColor{LightBackground}
`git merge {[}branch name{]}` & merge the specified branch into current one \tn 
% Row Count 26 (+ 3)
% Row 11
\SetRowColor{white}
`git log` & show all commits \tn 
% Row Count 27 (+ 1)
% Row 12
\SetRowColor{LightBackground}
`git push` & transmit local branch commits to remote repo \tn 
% Row Count 30 (+ 3)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{GIT commands (cont)}}  \tn
% Row 13
\SetRowColor{LightBackground}
`git pull` & fetch and merge any commits from the remote repo \tn 
% Row Count 3 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.39356 cm} x{3.58344 cm} }
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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Regex}}  \tn
% Row 0
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\textasciicircum{} or \textbackslash{}A & Start of string \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\$ or \textbackslash{}Z & end of string \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\textbackslash{}b & word boundary \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\textbackslash{}B & Not word boundary \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\textbackslash{}s & white space \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
\textbackslash{}S & not white space \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
?= & look ahead \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
?! & negative lookahead \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
* & 0 or more \tn 
% Row Count 9 (+ 1)
% Row 9
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+ & 1 or more \tn 
% Row Count 10 (+ 1)
% Row 10
\SetRowColor{LightBackground}
? & 0 or 1 \tn 
% Row Count 11 (+ 1)
% Row 11
\SetRowColor{white}
\{3\} & exactly 3 \tn 
% Row Count 12 (+ 1)
% Row 12
\SetRowColor{LightBackground}
\{3,\} & 3 or more \tn 
% Row Count 13 (+ 1)
% Row 13
\SetRowColor{white}
\{3,5\} & 3, 4, or 5 \tn 
% Row Count 14 (+ 1)
% Row 14
\SetRowColor{LightBackground}
{[}a-z{]} & lowercase a - z \tn 
% Row Count 15 (+ 1)
% Row 15
\SetRowColor{white}
{[}A-Z{]} & uppercase A-Z \tn 
% Row Count 16 (+ 1)
% Row 16
\SetRowColor{LightBackground}
{[}\textasciicircum{}abc{]} & not (a or b or c) \tn 
% Row Count 17 (+ 1)
% Row 17
\SetRowColor{white}
{[}0-7{]} & digits from 0 to 7 \tn 
% Row Count 18 (+ 1)
% Row 18
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(a|C) & a or C \tn 
% Row Count 19 (+ 1)
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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{JavaScript String Objects}}  \tn
% Row 0
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length & \seqsplit{property} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
charAt(n) & \seqsplit{method} \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
charCodeAt(n) & \seqsplit{method} \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
l`et a = "10"; let b = 20; console.log(a + b)` & 1020 \tn 
% Row Count 6 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`let a = "10"; let b = 20; console.log(+a + b)` & 30 \tn 
% Row Count 8 (+ 2)
% Row 5
\SetRowColor{white}
`let a = "10"; let b = 20; console.log(a - b)` & -10 \tn 
% Row Count 10 (+ 2)
% Row 6
\SetRowColor{LightBackground}
`let a = "10"; let b = 20; console.log(a * b)` & 200 \tn 
% Row Count 12 (+ 2)
% Row 7
\SetRowColor{white}
l`et a = "CST8285"; let b = 20; console.log(a - b)` & NaN \tn 
% Row Count 14 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{PHP - database connection}}  \tn
% Row 0
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\mymulticolumn{1}{x{5.377cm}}{MYSQLi connection} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}`\$dbc = mysqli\_connect(\$host, \$user, \$pw, \$db);`} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Query} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}`\$result = mysqli\_query(\$dbc, \$query);`} \tn 
% Row Count 5 (+ 2)
% Row 2
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\mymulticolumn{1}{x{5.377cm}}{Close} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}`mysqli\_close(\$dbc);`} \tn 
% Row Count 7 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.34379 cm} x{3.63321 cm} }
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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{JavaScript Math Objects}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{`Math.round(x)`} & x to nearest integer \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\seqsplit{`Math.pow(x},y)` & x to the power of y \tn 
% Row Count 4 (+ 2)
% Row 2
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\seqsplit{`Math.sqrt(x)`} & square root of x \tn 
% Row Count 6 (+ 2)
% Row 3
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\seqsplit{`Math.abs(x)`} & absolute |x| \tn 
% Row Count 8 (+ 2)
% Row 4
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\seqsplit{`Math.random()`} & random number between 0 (inclusive) to 1(exclusive) \tn 
% Row Count 10 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
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\par\addvspace{1.3em}

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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{JavaScript Arrays}}  \tn
% Row 0
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\mymulticolumn{2}{x{5.377cm}}{`array.sort(function(a,b)\{return a-b\})`} \tn 
% Row Count 1 (+ 1)
% Row 1
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% Row Count 2 (+ 1)
% Row 2
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`a-b = {\bf{positive}}` & b sorted before value a \tn 
% Row Count 4 (+ 2)
% Row 3
\SetRowColor{white}
`a-b = {\bf{negative}}` & a sorted before value b \tn 
% Row Count 6 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`a-b = 0` & items stay inthe same spot \tn 
% Row Count 8 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{\seqsplit{`array.filter(function(element)} \{return (comparison)\}`} \tn 
% Row Count 10 (+ 2)
% Row 6
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\mymulticolumn{2}{x{5.377cm}}{`array.filter((element) =\textgreater{} \{return (comparison)\};`} \tn 
% Row Count 11 (+ 1)
% Row 7
\SetRowColor{white}
`array.map((item)=\textgreater{}array.key);` & new array containing only items with key \tn 
% Row Count 13 (+ 2)
% Row 8
\SetRowColor{LightBackground}
`array.push(value)` & add value to end of array \tn 
% Row Count 15 (+ 2)
% Row 9
\SetRowColor{white}
`array.pop()` & remove value at end of array, returning value \tn 
% Row Count 18 (+ 3)
% Row 10
\SetRowColor{LightBackground}
\seqsplit{`array.unshift(value)`} & add value at start of array \tn 
% Row Count 20 (+ 2)
% Row 11
\SetRowColor{white}
`array.shift()` & remove value at start of array, returning value \tn 
% Row Count 23 (+ 3)
% Row 12
\SetRowColor{LightBackground}
\seqsplit{`array.splice(startingIndex}, \seqsplit{totalElementsToDelete}, valuesToAdd)` & add or remove elements anywhere in the array and returns deleted elements if any \tn 
% Row Count 27 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
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\begin{tabularx}{5.377cm}{x{2.33919 cm} x{2.63781 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{PHP functions}}  \tn
% Row 0
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`isset()` & test if variable exists \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
`empty()` & tests for empty variable \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{`mysqli\_fetch\_array(\$result)`} & fetch each row of query \$result \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
`exit()` & end script immediately \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`trim(\$string)` & remove leading and trailing whitespace \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
`file(\$fn)` & read contents of \$fn, returns array of strings \tn 
% Row Count 13 (+ 3)
% Row 6
\SetRowColor{LightBackground}
\seqsplit{`file\_get\_contents(\$fn)`} & returns single string \tn 
% Row Count 15 (+ 2)
% Row 7
\SetRowColor{white}
\seqsplit{`file\_put\_contents(\$fn}, data, mode)` & write content from data to \$fn, using mode) \tn 
% Row Count 18 (+ 3)
% Row 8
\SetRowColor{LightBackground}
\seqsplit{`file\_exists(\$fn)`} & checks if \$fn exists \tn 
% Row Count 19 (+ 1)
% Row 9
\SetRowColor{white}
`scandir(\$path)` & returns array of lists of files and directories if \$path is valid, else false \tn 
% Row Count 23 (+ 4)
% Row 10
\SetRowColor{LightBackground}
`glob()` & returns array of all file names that match pattern, with path \tn 
% Row Count 26 (+ 3)
% Row 11
\SetRowColor{white}
`getcwd()` & returns string of current working dir \tn 
% Row Count 28 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
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\begin{tabularx}{5.377cm}{X}
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Cookies \& Session}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Cookies \newline % Row Count 1 (+ 1)
- limited in size by browser \newline % Row Count 2 (+ 1)
- stored client-side \newline % Row Count 3 (+ 1)
- can be disabled \newline % Row Count 4 (+ 1)
Sessions \newline % Row Count 5 (+ 1)
- limited by server space \newline % Row Count 6 (+ 1)
- stored server-side \newline % Row Count 7 (+ 1)
- expire when browser closed \newline % Row Count 8 (+ 1)
- cannot be modified by users% Row Count 9 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\begin{tabularx}{5.377cm}{x{2.23965 cm} x{2.73735 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{PHP Session Commands}}  \tn
% Row 0
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`session\_start()` & start a session \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
`\$\_SESSION{[}"variableName"{]}` & store session variable \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`unset(\$\_SESSION{[}"variableName"{]}` & remove session variable \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
\seqsplit{`session\_destroy()`} & destroy session and all session variables \tn 
% Row Count 7 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{JSON}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{easy to parse and generate} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{can contain both object and array structures} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{contain key and value pairs} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{keys are always strings} \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{values can be string, number, Boolean, null, object, or array} \tn 
% Row Count 6 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{HAS no version, very stable, strictly in UNICODE} \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Example object: \$json = ' \{ "Name": "Alex", "Age": 37, "Admin": true \} ' ;} \tn 
% Row Count 9 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.43873 cm} x{2.53827 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{JSON in PHP}}  \tn
% Row 0
\SetRowColor{LightBackground}
`json\_encode()` & convert PHP array to JSON array \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\seqsplit{`JSON\_FORCE\_OBJECT`} & changes above to reult in indexed array \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
`json\_decode( \$json, true))` & JSON string to PHP array \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
`json\_decode( \$json, false) (default)` & JSON string to PHP object \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
`JSON.stringify()` & take JS object and produce JSON string \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
`JSON.parse()` & take JSON string and produce JS object \tn 
% Row Count 12 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.44333 cm} x{3.53367 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{PHP Error Reporting}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{error\_reporting} & types of errors reported \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\seqsplit{display\_errors} & whether messages displayed in browser \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
log\_errors & on server or somewhere else \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.46464 cm} x{1.55618 cm} x{1.55618 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{var | let | const}}  \tn
% Row 0
\SetRowColor{LightBackground}
VAR & LET & CONST \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\seqsplit{function-scoped} & block-scoped & block-scoped \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
updatable & updatable & not updatable \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
\seqsplit{redeclarable} & not redeclarable & not redeclarable \tn 
% Row Count 6 (+ 2)
% Row 4
\SetRowColor{LightBackground}
hoisted null & not hoisted &  \tn 
% Row Count 7 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}