Difference when using <? and <?php
1067
Are PHP short tags acceptable to use?
84802
What is the difference between <%: and <%= in ASP.NET MVC?
89873
PHP: a short cut for isset and !empty?
96938
What's the difference between using > and >> in shell?
65086
Regular expression using \\ vs using \
83225
Difference between single and double square brackets in Bash
93920
What does @ mean in PHP?
152763
php == vs === operator
45662
What is `$?` ? Is it a variable?
19555
Difference between >>> and >>
52234
Where does the question mark go — inside or outside the parentheses?
131658
What is ?: in PHP 5.3?
64769
What is the difference between \empty and \@empty?
73024
PHP regex delimiters, / vs. | vs. {} , what are the differences?
66172
What's the difference between  and ,  and ?
120214
What's the difference between <<, <<< and < < in bash?
36012
What is the difference between ./ and ../?