Index
! (exclamation point)
using as function delimiter, 390
“ (double quotation marks)
in Boolean mode, 191
debugging PHP scripts by tracking, 218
preg_match() function and, 390
printing variables within, 15, 218
showing string value within context, 18
single vs., 30–32
SQL queries and, 127
using for HTML attributes, 91
# (pound symbol), 10
$ (dollar sign)
initial character in variable, 14
using as meta-character, 394–395
% (modulus), 23
‘ (single quotation mark)
debugging PHP scripts by tracking, 218
double vs., 30–32
preg_match() function and, 390
SQL queries and, 127
( ) (parentheses), 191
* (asterisk) ...
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