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Index: 0

{ } (curly braces)

{{{ and }}} sequences in comments: 14.3.4. Fleshing Out the Skeleton (Programming PHP)

as pattern delimiters: 4.10.1. Delimiters (Programming PHP)

enclosing array lookup in: 5.4. Multidimensional Arrays (Programming PHP)

in code blocks: 2.1.2. Statements and Semicolons (Programming PHP)

2.5.1. if (Programming PHP)

variable interpolation in strings: 4.1.1. Variable Interpolation (Programming PHP)

- (hyphen): 13.2.5. Multiple Commands (Running Linux)

-> construct, accessing properties and methods: 2.2.6. Objects (Programming PHP)

6.3. Accessing Properties and Methods (Programming PHP)

defining character range in regular expressions: 4.8.2. Character Classes (Programming PHP)

inline pattern matching options, turning off: 4.10.9. Inline Options (Programming PHP)

- (minus sign)

-- (autodecrement) operator: 2.4.7. Autoincrement and Autodecrement Operators (Programming PHP)

- (arithmetic negation) operator: 2.4.5. Arithmetic Operators (Programming PHP)

-= (subtraction assignment) operator: 2.4.12.2. Assignment with operation (Programming PHP)

- (subtraction) operator: 2.4.5. Arithmetic Operators (Programming PHP)

in Boolean mode searches: 3.9.1.3. Boolean mode (Managing & Using MySQL)

for right-justified strings: 4.2.3.1. Format modifiers (Programming PHP)

subtraction operator: 3.8. SQL Operators (Managing & Using MySQL)

17.1.2. Arithmetic Operators (Managing & Using MySQL)

& (ampersand): 6.3. Common Features (Linux in a Nutshell)

&= (bitwise AND assignment) operator: 2.4.12.2. Assignment with operation (Programming PHP)

& (bitwise AND) operator: 2.4.9. Bitwise Operators (Programming PHP)

converting to HTML entity: 4.5.1.1. Entity-quoting all special characters (Programming PHP)

ex: 11.14. Alphabetical Summary of ex Commands (Linux in a Nutshell)

11.14. Alphabetical Summary of ex Commands (Linux in a Nutshell)

indicating passing by reference: 3.4.2. Passing Parameters by Reference (Programming PHP)

logical AND: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

/* and*/

multiline comments in C: 15.1.3. Comments (Managing & Using MySQL)

multiline comments in PHP scripts: 11.1.1. A Short Language Primer (Managing & Using MySQL)

< > (angle brackets) ex: 11.14. Alphabetical Summary of ex Commands (Linux in a Nutshell)

* (asterisk): 6.3. Common Features (Linux in a Nutshell)

7.2.2. Filename Metacharacters (Linux in a Nutshell)

*= (multiplication assignment) operator: 2.4.12.2. Assignment with operation (Programming PHP)

* (multiplication) operator: 2.4.5. Arithmetic Operators (Programming PHP)

in Boolean mode searches: 3.9.1.3. Boolean mode (Managing & Using MySQL)

extended regular expression: 3.8.4. Pattern Matching (Managing & Using MySQL)

in greedy and non-greedy quantifiers: 4.10.5. Quantifiers and Greed (Programming PHP)

multiplication operator: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

3.8. SQL Operators (Managing & Using MySQL)

17.1.2. Arithmetic Operators (Managing & Using MySQL)

naming tables in ON clause: 6.1.2.1. GRANT and REVOKE (Managing & Using MySQL)

@ (at)

ex: 11.14. Alphabetical Summary of ex Commands (Linux in a Nutshell)

tcsh: 8.9. Built-in Commands (Linux in a Nutshell)

13.2.5. Multiple Commands (Running Linux)

function call prefix when using showerror( ): 11.3.5. Handling MySQL Errors (Managing & Using MySQL)

identifying users to MySQL: 6.1.2.1. GRANT and REVOKE (Managing & Using MySQL)

error suppression operator: 2.4.13. Miscellaneous Operators (Programming PHP)

` (backquote): 7.2.4. Quoting (Linux in a Nutshell)

\ (backslash): 6.3. Common Features (Linux in a Nutshell)

escape character: 3.6.1. Inserts (Managing & Using MySQL)

escape sequences for MySQL: 15.1.1. Literals (Managing & Using MySQL)

escaping

in lookbehind pattern assertions: 4.10.10. Lookahead and Lookbehind (Programming PHP)

in single-quoted strings: 4.1.2. Single-Quoted Strings (Programming PHP)

regular expression metacharacters: 4.8.1. The Basics (Programming PHP)

exporting tab delimited data: 15.2. SQL Commands (Managing & Using MySQL)

in SQL queries: 4.5.3. SQL (Programming PHP)

removing from escaped strings: A.3d. Alphabetical Listing of PHP Functions (r-z) (Programming PHP)

` (backtick) operator: 2.4.13. Miscellaneous Operators (Programming PHP)

security risks of: 12.7. Shell Commands (Programming PHP)

! (bang): 6.3. Common Features (Linux in a Nutshell)

ex: 11.14. Alphabetical Summary of ex Commands (Linux in a Nutshell)

shell invocation, ftp: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

!~ (bang tilde), gawk: 13.2.1. Patterns (Linux in a Nutshell)

| (bitwise OR operator): 17.1.2. Arithmetic Operators (Managing & Using MySQL)

{ } (braces), sed command: 12.2.1.1. Examples (Linux in a Nutshell)

[ ] (brackets): 6.3. Common Features (Linux in a Nutshell)

7.2.2. Filename Metacharacters (Linux in a Nutshell)

as pattern delimiters: 4.10.1. Delimiters (Programming PHP)

[[:>:]] end of word anchor in regular expressions: 4.9.2. Anchors (Programming PHP)

in regular expression character classes: 4.8.2. Character Classes (Programming PHP)

extended regular expression: 3.8.4. Pattern Matching (Managing & Using MySQL)

start of word anchor in regular expressions: 4.9.2. Anchors (Programming PHP)

^ (caret)

^= (bitwise XOR assignment) operator: 2.4.12.2. Assignment with operation (Programming PHP)

^ (bitwise XOR) operator: 2.4.9. Bitwise Operators (Programming PHP)

negating regular expression character classes: 4.8.2. Character Classes (Programming PHP)

start of line anchor, Perl regular expressions: 4.10.4. Anchors (Programming PHP)

start of string anchor in regular expressions: 4.8.1. The Basics (Programming PHP)

4.9.2. Anchors (Programming PHP)

extended regular expression: 3.8.4. Pattern Matching (Managing & Using MySQL)

gawk: 13.2.1. Patterns (Linux in a Nutshell)

: (colon)

ex editor: 11. The vi Editor (Linux in a Nutshell)

pattern search, expr: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

sed: 12.4. Alphabetical Summary of sed Commands (Linux in a Nutshell)

:set command (ex): 11.15.1. The :set Command (Linux in a Nutshell)

tcsh null command: 8.9. Built-in Commands (Linux in a Nutshell)

ending if line: 2.5.1. if (Programming PHP)

, (comma)

ASCII value for: 4.7.4. String-Searching Functions (Programming PHP)

two or more, skipping array values in list( ): 5.5. Extracting Multiple Values (Programming PHP)

$ (dollar): 6.3. Common Features (Linux in a Nutshell)

execute macro command, ftp: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

gawk: 13.2.1. Patterns (Linux in a Nutshell)

prompt: 0.. Conventions (Linux in a Nutshell)

sed: 12.2.1. Pattern Addressing (Linux in a Nutshell)

extended regular expression: 3.8.4. Pattern Matching (Managing & Using MySQL)

in regular expressions: 4.8.1. The Basics (Programming PHP)

4.9.2. Anchors (Programming PHP)

4.10.2. Match Behavior (Programming PHP)

4.10.4. Anchors (Programming PHP)

in variable names: 2.1.6.1. Variable names (Programming PHP)

2.3. Variables (Programming PHP)

variable identifier in PHP: 11.1.1. A Short Language Primer (Managing & Using MySQL)

. (dot): 7.7. Built-in Commands (Linux in a Nutshell)

.+ (concatenation assignment) operator: 2.4.12.2. Assignment with operation (Programming PHP)

. (string concatenation) operator: 2.4.6. String Concatenation Operator (Programming PHP)

in cookie names, decoding: 7.6.1. Cookies (Programming PHP)

in HTML field names, converting for PHP variables: 7.4.2. Parameters (Programming PHP)

single-character matches in regular expressions: 4.8.1. The Basics (Programming PHP)

wildcard match character: 4.10.2. Match Behavior (Programming PHP)

== (double equals), variable equality test in PHP: 11.1.1. A Short Language Primer (Managing & Using MySQL)

?? (double question marks): 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

" " (double quotes): 6.3. Common Features (Linux in a Nutshell)

= (equal sign)

comparison operator: 3.8. SQL Operators (Managing & Using MySQL)

=> symbol, separating array indexes from values: 5.3. Storing Data in Arrays (Programming PHP)

variable assignment operator in PHP: 11.1.1. A Short Language Primer (Managing & Using MySQL)

= (equals)

ex: 11.14. Alphabetical Summary of ex Commands (Linux in a Nutshell)

sed: 12.4. Alphabetical Summary of sed Commands (Linux in a Nutshell)

= (equals sign)

= (assignment) operator: 2.4.12.1. Assignment (Programming PHP)

== (equal to) operator: 2.2.3. Strings (Programming PHP)

2.4.8. Comparison Operators (Programming PHP)

comparing strings with: 4.6.1. Exact Comparisons (Programming PHP)

=== (identity) operator: 2.4.8. Comparison Operators (Programming PHP)

comparing strings with: 4.6.1. Exact Comparisons (Programming PHP)

testing return value for failure: 4.7.4. String-Searching Functions (Programming PHP)

\% escape sequence (MySQL): 15.1.1. Literals (Managing & Using MySQL)

\( \) (escaped parentheses): 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

! (exclamation point)

!= (inequality) operator: 2.4.8. Comparison Operators (Programming PHP)

!== (not identical) operator: 2.4.8. Comparison Operators (Programming PHP)

type specification modifier: 14.7. Parameter Handling (Programming PHP)

/ (forward slash)

division operator: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

sed command: 12.2.1. Pattern Addressing (Linux in a Nutshell)

#! (hash bang): 7.7. Built-in Commands (Linux in a Nutshell)

tcsh shell: 8.9. Built-in Commands (Linux in a Nutshell)

# (hash mark): 4.3.2. The GRUB Configuration File (Linux in a Nutshell)

6.3. Common Features (Linux in a Nutshell)

13.2.2. Some Syntax Rules (Running Linux)

in shell scripts: 7.7. Built-in Commands (Linux in a Nutshell)

sed: 12.4. Alphabetical Summary of sed Commands (Linux in a Nutshell)

tcsh shell: 8.9. Built-in Commands (Linux in a Nutshell)

root account prompt: 5.1. Maintaining the System (Running Linux)

in comments: 2.1.4.1. Shell-style comments (Programming PHP)

- (hyphen) and metamail command: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

!= (inequality operator): 3.8. SQL Operators (Managing & Using MySQL)

17.1.3. Comparison Operators (Managing & Using MySQL)

- (minus operator): 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

% (modulo operator): 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

! (NOT logical operator): 17.1.4. Logical Operators (Managing & Using MySQL)

: (null command): 7.7. Built-in Commands (Linux in a Nutshell)

|| (OR logical operator): 17.1.4. Logical Operators (Managing & Using MySQL)

( ) parentheses

in Boolean mode searches: 3.9.1.3. Boolean mode (Managing & Using MySQL)

overriding precedence rules: 3.8.1. Logical Operators (Managing & Using MySQL)

% (percent sign): 6.4. Differing Features (Linux in a Nutshell)

bash job ID argument: 7.6. Job Control (Linux in a Nutshell)

modulo of two values: 17.1.2. Arithmetic Operators (Managing & Using MySQL)

pattern matching character: 3.8.4. Pattern Matching (Managing & Using MySQL)

9.1.4. Introducing Bind Variables and Optimizations (Managing & Using MySQL)

prompt: 0.. Conventions (Linux in a Nutshell)

%= (modulus assignment) operator: 2.4.12.2. Assignment with operation (Programming PHP)

% (modulus) operator: 2.4.5. Arithmetic Operators (Programming PHP)

in format string to printf( ): 4.2.3. printf( ) (Programming PHP)

. (period), extended regular expression: 3.8.4. Pattern Matching (Managing & Using MySQL)

| (pipe): 6.3. Common Features (Linux in a Nutshell)

7.2.2. Filename Metacharacters (Linux in a Nutshell)

as logical OR symbol: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

+ (plus sign) operator: 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

fvwm2: 19.1.1. Configuration Files (Linux in a Nutshell)

+= (addition assignment) operator: 2.4.12.2. Assignment with operation (Programming PHP)

+ (addition) operator: 2.4.5. Arithmetic Operators (Programming PHP)

+ (arithmetic assertion) operator: 2.4.5. Arithmetic Operators (Programming PHP)

++ (autoincrement) operator: 2.4.7. Autoincrement and Autodecrement Operators (Programming PHP)

addition operator: 3.8. SQL Operators (Managing & Using MySQL)

17.1.2. Arithmetic Operators (Managing & Using MySQL)

in Boolean mode searches: 3.9.1.3. Boolean mode (Managing & Using MySQL)

in greedy and non-greedy quantifiers: 4.10.5. Quantifiers and Greed (Programming PHP)

printing positive numbers with: 4.2.3.1. Format modifiers (Programming PHP)

spaces, encoding in URLs: 4.5.2.2. Query-string encoding (Programming PHP)

9.6. Dynamically Generated Buttons (Programming PHP)

# (pound sign)

comments in configuration files: 4.1.2. File Content (Managing & Using MySQL)

one-line comments in C: 15.1.3. Comments (Managing & Using MySQL)

one-line comments in PHP scripts: 11.1.1. A Short Language Primer (Managing & Using MySQL)

($$) prototype, method handlers and: 25.1.5. Method Handlers (Practical mod_perl)

? (question mark): 6.3. Common Features (Linux in a Nutshell)

7.2.2. Filename Metacharacters (Linux in a Nutshell)

?: (conditional) operator: 2.4.13. Miscellaneous Operators (Programming PHP)

2.5.1. if (Programming PHP)

ftp help command): 3.1. Alphabetical Summary of Commands (Linux in a Nutshell)

in non-greedy quantifiers: 4.10.5. Quantifiers and Greed (Programming PHP)

placeholder in database queries: 8.4.1. Placeholders (Programming PHP)

replacing characters outside target encoding: 11.3.6.1. Character encoding (Programming PHP)

' (quotes, single)

HTML entity for: 4.5.1.1. Entity-quoting all special characters (Programming PHP)

in heredocs: 4.1.4. Here Documents (Programming PHP)

in SQL queries: 4.5.3. SQL (Programming PHP)

in string literals: 2.2.3. Strings (Programming PHP)

escape sequences in: 2.2.3. Strings (Programming PHP)

single-quoted strings: 4.1.2. Single-Quoted Strings (Programming PHP)

> (redirection operator): 6.3. Common Features (Linux in a Nutshell)

; (semicolon): 6.3. Common Features (Linux in a Nutshell)

after terminating heredoc identifier: 4.1.4. Here Documents (Programming PHP)

before PHP closing tag: 2.1.2. Statements and Semicolons (Programming PHP)

comments in configuration files: 4.1.2. File Content (Managing & Using MySQL)

in PHP statements: 2.1.2. Statements and Semicolons (Programming PHP)

statement termination character in PHP scripts: 11.1.1. A Short Language Primer (Managing & Using MySQL)

; (semicolon), importance of: 21.5.1. Locating and Correcting Syntax Errors (Practical mod_perl)

' ' (single quotes): 6.3. Common Features (Linux in a Nutshell)

/ (slash)

/* */, in multiline C-style comments: 2.1.4.3. C comments (Programming PHP)

/= (division assignment) operator: 2.4.12.2. Assignment with operation (Programming PHP)

/ (division) operator: 2.4.5. Arithmetic Operators (Programming PHP)

type specification modifier: 14.7. Parameter Handling (Programming PHP)

directories: 4.4.1. Directories (Running Linux)

division operator: 3.8. SQL Operators (Managing & Using MySQL)

17.1.2. Arithmetic Operators (Managing & Using MySQL)

-t option, validating server configuration: 5.5. Validating Server Configuration (Practical mod_perl)

-T switch: 6.5.2.2. Taint mode (Practical mod_perl)

~ (tilde)

bash: 7.2.2. Filename Metacharacters (Linux in a Nutshell)

ex: 11.14. Alphabetical Summary of ex Commands (Linux in a Nutshell)

gawk: 13.2.1. Patterns (Linux in a Nutshell)

sed: 12.2.1. Pattern Addressing (Linux in a Nutshell)

tcsh: 8.7.1. Completion (Linux in a Nutshell)

bitwise negation operator: 2.4.9. Bitwise Operators (Programming PHP)

directories: 4.4.1. Directories (Running Linux)

in Boolean mode searches: 3.9.1.3. Boolean mode (Managing & Using MySQL)

in vi editor: 9.1.1. Starting vi (Running Linux)

=== (triple equals), parameter equality test in PHP: 11.1.1. A Short Language Primer (Managing & Using MySQL)

_ (underscore)

_ _ , method names beginning with: 6.4.1. Declaring Methods (Programming PHP)

converting dots (.) in cookie names to: 7.6.1. Cookies (Programming PHP)

converting dots (.) in HTML field names to: 7.4.2. Parameters (Programming PHP)

pattern matching character: 3.8.4. Pattern Matching (Managing & Using MySQL)

$$ variable: 9.3. Process Memory Measurements (Practical mod_perl)

| (vertical bar)

|= (bitwise OR assignment) operator: 2.4.12.2. Assignment with operation (Programming PHP)

| (bitwise OR) operator: 2.4.9. Bitwise Operators (Programming PHP)

alternatives, in regular expressions: 4.8.3. Alternatives (Programming PHP)

type specification modifier: 14.7. Parameter Handling (Programming PHP)

-X switch: 5.2. Starting the Server in Single-Process Mode (Practical mod_perl)

Numbers

1-to-1 relationships: 7.2.5. Kinds of Relationships (Managing & Using MySQL)

designing models for maintainable Perl programs: 9.3.1. A Model for Relational Data (Managing & Using MySQL)

object/relational modeling: 8.3. Object/Relational Modeling (Managing & Using MySQL)

1-to-M relationships: 7.2.5. Kinds of Relationships (Managing & Using MySQL)

7.4.2. Foreign Keys (Managing & Using MySQL)

designing models for maintainable Perl programs: 9.3.1. A Model for Relational Data (Managing & Using MySQL)

wedding gift registry database: 11.3.1. The Wedding Gift Registry Database (Managing & Using MySQL)

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