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Index: S

Sablotron C library (XSLT support for PHP): 11.4. Transforming XML with XSLT
safe_mode directive (php.ini file): 12.4.4. Safe Mode
SAPI (Server Abstraction API): 14.1. Architectural Overview
14.10.1. SAPI Globals (SG)
getting name of: A.2c. Alphabetical Listing of PHP Functions (j-q)
linking PHP into server via: 15.1.2. Configuring PHP with a Web Server
sapi_globals_struct: 14.10.1. SAPI Globals (SG)
Satellite CORBA Client extension: B.1. Optional Extensions Listing
scalar types: 2.2. Data Types
scalar values: A.2b. Alphabetical Listing of PHP Functions (f-i)
scaling images: 9.7. Scaling Images
in PDF files: 10.4.1. Images
nonproportional scaling: 10.4.1. Images
Schemas for XML documents: 11.1. Lightning Guide to XML
scientific notation: 2.2.2. Floating-Point Numbers
scope: 2.3.3. Variable Scope
overriding with pass by reference: 3.4.2. Passing Parameters by Reference
variables in functions: 3.3. Variable Scope
global, accessing: 3.3.1. Global Variables
<script> tags, enclosing PHP code in: 2.7.4. Script Style
scripts (current), name of ($PHP_SELF variable): 7.2. Variables
search and replace operations
POSIX-style regular expressions: 4.9.3.2. Replacing
with preg_replace( ): 4.10.13.2. Replacing
search engine (mnoGoSearch): B.1. Optional Extensions Listing
searching
array for values: 5.7.6. Searching for Values
strings
functions for: 4.7.4. String-Searching Functions
position, returning: 4.7.4.1. Searches returning position
rest of string, returning: 4.7.4.2. Searches returning rest of string
URLs, decomposing into components: 4.7.4.4. Decomposing URLs
using masks: 4.7.4.3. Searches using masks
Secure Sockets Layer (SSL): 7.7. SSL
security: 12. Security
concealing PHP libraries: 12.5. Concealing PHP Libraries
eval( ) function, risks of: 12.6. PHP Code
file permissions: 12.4. File Permissions
session files: 12.4.2. Session Files
file uploads: 12.3. File Uploads
distrusting browser-supplied filenames: 12.3.1. Distrust Browser-Supplied Filenames
size of uploaded files: 12.3.2. Beware of Filling Your Filesystem
surviving register_globals: 12.3.3. Surviving register_globals
filenames and: 12.2. Filenames
checking for relative paths: 12.2.1. Check for Relative Paths
restricting filesystem access: 12.2.2. Restrict Filesystem Access to a Specific Directory
files, not using: 12.4.3. Don't Use Files
global variables and form data: 12.1. Global Variables and Form Data
initializing variables: 12.1.1. Initialize Variables
variables_order directive in php.ini: 12.1.2. Set variables_order
safe mode for shared servers: 12.4.4. Safe Mode
shell commands: 12.7. Shell Commands
summary of good practices: 12.8. Security Redux
web application: 12. Security
seeding
Mersenne Twister generator: A.2c. Alphabetical Listing of PHP Functions (j-q)
random-number generator: A.3d. Alphabetical Listing of PHP Functions (r-z)
sendmail: 15.2.4. Sending Mail
SEPARATE_ZVAL( ) macro: 14.6.2. SEPARATE_ZVAL( )
sequences, database: 8.4.5. Sequences
serialize( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
serializing objects: 6.6. Serialization
_ _sleep( ) and _ _wakeup( ) methods: 6.6. Serialization
logfile (example): 6.6. Serialization
server-side scripting: 1.1. What Does PHP Do?
$_SERVER array: 7.3. Server Information
HTTP request headers, entries for: 7.3. Server Information
servers
Apache (see Apache web servers)
database: 13.5.5.3. MySQL replication
global variables for, controlling: 12.1.2. Set variables_order
$HTTP_SERVER_VARS array: 7.2. Variables
in-process (inproc): 15.3.1. Background
information about ($_SERVER array): 7.3. Server Information
load balancing and redirection: 13.5.5.2. Load balancing and redirection
out-of-process: 15.3.1. Background
with PHP linked in: 14.1. Architectural Overview
remote, YAZ toolkit implementing Z39.50 protocol: B.1. Optional Extensions Listing
reverse proxy caches: 13.5.5. Reverse Proxies and Replication
SAPI (Server Abstraction API) global variables: 14.10.1. SAPI Globals (SG)
Server header: 7.1. HTTP Basics
shared, safe mode for security: 12.4.4. Safe Mode
XML-RPC: 11.5.1. Servers
session files, file permissions and: 12.4.2. Session Files
session tracking: 7.6. Maintaining State
session_destroy( ) function: 7.6.2.1. Session basics
session_is_registered( ) function: 7.6.2.1. Session basics
session_register( ): 7.6.2.1. Session basics
sessions: 7.6.2. Sessions
ab (Apache benchmarking) utility and: 13.5.1. Benchmarking
close handler: 7.6.2.3. Custom storage
combining cookies with: 7.6.3. Combining Cookies and Sessions
destroy handler for: 7.6.2.3. Custom storage
errors, logging to file: 7.6.2.3. Custom storage
garbage collection handler: 7.6.2.3. Custom storage
open handler: 7.6.2.3. Custom storage
read and write handlers: 7.6.2.3. Custom storage
registering variables for: 7.6.2.1. Session basics
session IDs
expiration of cookies: 7.6.2.1. Session basics
storing in cookies: 7.6.2. Sessions
storing in form fields or URLs: 7.6.2.2. Alternatives to cookies
session information storage, customizing: 7.6.2.3. Custom storage
setting page-color preferences with: 7.6.2.1. Session basics
using preferences from: 7.6.2.1. Session basics
session_set_save_handler( ) function: 7.6.2.3. Custom storage
7.6.2.3. Custom storage
session_start( ) function: 7.6.2.1. Session basics
7.6.2.3. Custom storage
session_unregister( ) function: 7.6.2.1. Session basics
setcookie( ) function: 7.5. Setting Response Headers
7.6.1. Cookies
A.3d. Alphabetical Listing of PHP Functions (r-z)
set_error_handler( ) function: 13.4.4. Defining Error Handlers
A.3d. Alphabetical Listing of PHP Functions (r-z)
set_file_buffer( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
setlocale( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
sets, implementing with arrays: 5.10.1. Sets
set_time_limit( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
settype( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
SGML, embedding PHP with SGML tags: 2.7.2. SGML Style
shell-based PHP programs: 1.4.5. From the Shell
shell commands: A.2c. Alphabetical Listing of PHP Functions (j-q)
A.3d. Alphabetical Listing of PHP Functions (r-z)
opening pipe to process executed on: A.2c. Alphabetical Listing of PHP Functions (j-q)
security and: 12.7. Shell Commands
Unix and Windows: 15.2.9. External Commands
shell-style comments: 2.1.4.1. Shell-style comments
shell_exec( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
shmop extension: B.1. Optional Extensions Listing
Shockwave Flash movies
Ming library: B.1. Optional Extensions Listing
SWF extension for creating: B.1. Optional Extensions Listing
short tags: 2.7.2. SGML Style
shortcuts in database queries: 8.4.3. Shortcuts
shuffle( ) function: 5.8.5. Randomizing Order
A.3d. Alphabetical Listing of PHP Functions (r-z)
shutdown function, registering: A.3d. Alphabetical Listing of PHP Functions (r-z)
shutdown or close function (extensions), triggering resource cleanup: 2.2.7. Resources
side effects of a function: 3.1. Calling a Function
3.4.2. Passing Parameters by Reference
sign specifier (printf( ) format modifier): 4.2.3.1. Format modifiers
similar_text( ) function: 4.6.2. Approximate Equality
A.3d. Alphabetical Listing of PHP Functions (r-z)
sin( ) function: 3.1. Calling a Function
A.3d. Alphabetical Listing of PHP Functions (r-z)
size
of files: 9.6.1. Caching the Dynamically Generated Buttons
of images, scaling: 9.7. Scaling Images
sizeof( ) function: 5.3.3. Getting the Size of an Array
A.3d. Alphabetical Listing of PHP Functions (r-z)
sleep( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
_ _sleep( ) method: 6.6. Serialization
slicing arrays: 5.5.1. Slicing an Array
SMTP servers: 15.2.4. Sending Mail
SNMP extension: B.1. Optional Extensions Listing
SOAP protocol: 11.5. Web Services
socket_get_status( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
sockets
extension for: B.1. Optional Extensions Listing
SSL: 7.7. SSL
socket_set_blocking( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
socket_set_timeout( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
software tools for writing PHP extensions: 14.2.2. Software Tools
sort( ) function: 5.8.1. Sorting One Array at a Time
A.3d. Alphabetical Listing of PHP Functions (r-z)
sorting
arrays: 2.2.5. Arrays
5.8. Sorting
multiple arrays at once: 5.8.3. Sorting Multiple Arrays at Once
in natural order: 5.8.2. Natural-Order Sorting
A.2c. Alphabetical Listing of PHP Functions (j-q)
PHP functions for: 5.8.1. Sorting One Array at a Time
in random order: 5.8.5. Randomizing Order
A.3d. Alphabetical Listing of PHP Functions (r-z)
in reverse order: 5.8.4. Reversing Arrays
A.2c. Alphabetical Listing of PHP Functions (j-q)
A.3d. Alphabetical Listing of PHP Functions (r-z)
in user-defined order: 5.8.1. Sorting One Array at a Time
using anonymous function: 3.7. Anonymous Functions
with user-defined function: A.3d. Alphabetical Listing of PHP Functions (r-z)
strings: 5.8.2. Natural-Order Sorting
A.3d. Alphabetical Listing of PHP Functions (r-z)
soundex( ) function: 4.6.2. Approximate Equality
A.3d. Alphabetical Listing of PHP Functions (r-z)
source code (PHP), downloading CVS version: 14.2.1. The PHP Source
special characters
in regular expressions: 4.8.1. The Basics
security risks in shell commands: 12.7. Shell Commands
spelling
aspell library: B.1. Optional Extensions Listing
pspell library: B.1. Optional Extensions Listing
split( ) function: 4.9.3.3. Splitting
A.3d. Alphabetical Listing of PHP Functions (r-z)
spliti( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
splitting
arrays into chunks: 5.5.2. Splitting an Array into Chunks
regular expression pattern matches: 4.10.13.3. Splitting
strings into arrays of smaller chunks: 4.8. Regular Expressions
strings into smaller chunks: 4.9.3.3. Splitting
sprintf( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
SQL (Structured Query Language)
escaping string literals in queries: 4.5.3. SQL
Microsoft SQL Server extension: B.1. Optional Extensions Listing
mSQL extension: B.1. Optional Extensions Listing
Ovrimos SQL extension: B.1. Optional Extensions Listing
placeholders in queries: 8.4.1. Placeholders
portability of queries: 8.1. Using PHP to Access a Database
relational databases and: 8.2. Relational Databases and SQL
statements performing queries: 8.3.4. Issuing a Query
sql_regcase( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
sqrt( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
Squid proxy cache: 13.5.5.1. Reverse-proxy cache
SquidGuard, adding redirection logic: 13.5.5.2. Load balancing and redirection
srand( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
sscanf( ) function: 4.7.3.3. sscanf( )
A.3d. Alphabetical Listing of PHP Functions (r-z)
SSL (Secure Sockets Layer): 7.7. SSL
stacks, implementing with arrays: 5.10.2. Stacks
standalone extensions: 14.3.5.1. Standalone extensions
start and end element handlers: 11.3.1. Element Handlers
start value of strings: 4.7.1. Substrings
starting point, graphics in PDF files: 10.4.2. Graphics
stat( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
state
debugger program for printing stack trace: 5.10.2. Stacks
maintaining between requests: 7.6. Maintaining State
combining cookies and sessions: 7.6.3. Combining Cookies and Sessions
cookies: 7.6. Maintaining State
session tracking: 7.6. Maintaining State
sessions: 7.6.2. Sessions
statements
flow-control: 2.5. Flow-Control Statements
declare: 2.5.6. declare
exit and return: 2.5.7. exit and return
for: 2.5.4. for
foreach: 2.5.5. foreach
if statement: 2.5.1. if
switch: 2.5.2. switch
while: 2.5.3. while
return: 3.2. Defining a Function
semicolons (;) in: 2.1.2. Statements and Semicolons
static methods: 6.3. Accessing Properties and Methods
declaring: 6.4.1. Declaring Methods
static variables: 2.3.3.3. Static variables
3.3.2. Static Variables
status codes, HTTP response: 7.1. HTTP Basics
stdClass (reserved class name): 6.4. Declaring a Class
STD_PHP_INI_ENTRY( ) macro: 14.12. Extension INI Entries
sticky forms: 7.4.5. Sticky Forms
sticky multi-valued parameters, HTML forms: 7.4.7. Sticky Multivalued Parameters
storing data in arrays: 5.3. Storing Data in Arrays
adding values to end of array: 5.3.1. Adding Values to the End of an Array
assigning range of values: 5.3.2. Assigning a Range of Values
getting array size: 5.3.3. Getting the Size of an Array
padding: 5.3.4. Padding an Array
strcasecmp( ) function: 4.6.1. Exact Comparisons
A.3d. Alphabetical Listing of PHP Functions (r-z)
strchr( ) function: 4.7.4.2. Searches returning rest of string
A.3d. Alphabetical Listing of PHP Functions (r-z)
strcmp( ) function: 2.4.8. Comparison Operators
4.6.1. Exact Comparisons
A.3d. Alphabetical Listing of PHP Functions (r-z)
strcoll( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
strcspn( ) function: 4.7.4.3. Searches using masks
A.3d. Alphabetical Listing of PHP Functions (r-z)
streaming PDF documents: 10.2.6. Terminating and Streaming a PDF Document
strftime( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
striking out text in PDF files: 10.3.3. Text Attributes
(string) casting operator: 2.4.11. Casting Operators
string literals: 2.2.3. Strings
strings: 2.2.3. Strings
2.4.7. Autoincrement and Autodecrement Operators
4. Strings
A.2b. Alphabetical Listing of PHP Functions (f-i)
accessing individual characters: 4.3. Accessing Individual Characters
as keys to associative arrays: 5.1. Indexed Versus Associative Arrays
breaking into chunks (example): 7.4.2. Parameters
C-string encoding: 4.5.4. C-String Encoding
changing case of: 4.4.2. Changing Case
characters, converting into HTML entity equivalents: 4.5.1.1. Entity-quoting all special characters
comparing: 2.4.8. Comparison Operators
4.6. Comparing Strings
for approximate equality: 4.6.2. Approximate Equality
for equality: 2.2.3. Strings
4.6.1. Exact Comparisons
concatenating: 2.4.4. Implicit Casting
. operator: 2.4.6. String Concatenation Operator
strcat( ) function: 3.2. Defining a Function
containing numbers, sorting in correct order: 5.8.2. Natural-Order Sorting
converting
between encodings, iconv extension: B.1. Optional Extensions Listing
to numbers: 2.4.4. Implicit Casting
to/from URL encoding: 4.5.2. URLs
9.6. Dynamically Generated Buttons
extension functions returning: 14.8.1. Simple Types
functions for manipulating and searching: 4.7. Manipulating and Searching Strings
A.1. PHP Functions by Category
exploding and imploding: 4.7.3. Decomposing a String
padding: 4.7.2. Miscellaneous String Functions
repeating: 4.7.2. Miscellaneous String Functions
reversing: 4.7.2. Miscellaneous String Functions
search functions: 4.7.4. String-Searching Functions
splitting on regular expression pattern boundary: A.3d. Alphabetical Listing of PHP Functions (r-z)
substrings: 4.7.1. Substrings
tokenizing: 4.7.3.2. Tokenizing
HTML, converting special characters to entities: 4.5.1. HTML
HTML meta tags, extracting from: 4.5.1.4. Extracting meta tags
HTML tags, removing from: 4.5.1.3. Removing HTML tags
length of, strlen( ) function (example): 3.1. Calling a Function
null-terminated, in extensions: 14.6. The pval/zval Data Type
printing: 4.2. Printing Strings
with echo: 4.2.1. echo
with print( ) function: 4.2.2. print( )
with printf( ) function: 4.2.3. printf( )
with print_r( ) function: 4.2.4. print_r( ) and var_dump( )
with var_dump( ) function: 4.2.4. print_r( ) and var_dump( )
quoting in PHP array keys: 5.2. Identifying Elements of an Array
quoting string constants: 4.1. Quoting String Constants
in double-quoted strings: 4.1.3. Double-Quoted Strings
in here documents: 4.1.4. Here Documents
in single-quoted strings: 4.1.2. Single-Quoted Strings
in variable interpolation: 4.1.1. Variable Interpolation
regular expressions, using on: 4.8. Regular Expressions
Perl-compatible regular expressions: 4.10. Perl-Compatible Regular Expressions
POSIX-style regular expressions: 4.9. POSIX-Style Regular Expressions
removing whitespace from: 4.4.1. Removing Whitespace
similarity between, calculating: A.3d. Alphabetical Listing of PHP Functions (r-z)
SQL queries, escaping string literals in: 4.5.3. SQL
trimming characters from end: A.3d. Alphabetical Listing of PHP Functions (r-z)
for XML error reporting: 11.3.8. Errors
stripcslashes( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
single-character escapes: 4.5.4. C-String Encoding
stripping unwanted file permissions: 12.4.1. Get It Right the First Time
stripslashes( ) function: 4.5.3. SQL
A.3d. Alphabetical Listing of PHP Functions (r-z)
using on $_GET, $_POST, and $_COOKIES: 7.4.3. Automatic Quoting of Parameters
strip_tags( ) function: 4.5.1.3. Removing HTML tags
A.3d. Alphabetical Listing of PHP Functions (r-z)
stristr( ) function: 4.7.4.2. Searches returning rest of string
A.3d. Alphabetical Listing of PHP Functions (r-z)
strlen( ) function: 3.1. Calling a Function
A.3d. Alphabetical Listing of PHP Functions (r-z)
accessing individual string characters: 4.3. Accessing Individual Characters
strnatcasecmp( ) function: 4.6.1. Exact Comparisons
strnatcmp( ) function: 4.6.1. Exact Comparisons
A.3d. Alphabetical Listing of PHP Functions (r-z)
strncasecmp( ) function: 4.6.1. Exact Comparisons
strncmp( ) function: 4.6.1. Exact Comparisons
A.3d. Alphabetical Listing of PHP Functions (r-z)
stroking
graphic paths: 10.4.2. Graphics
patterns for: 10.4.3. Patterns
text: 10.3.3. Text Attributes
str_pad( ) function: 4.7.2. Miscellaneous String Functions
A.3d. Alphabetical Listing of PHP Functions (r-z)
strpos( ) function: 4.7.4.1. Searches returning position
A.3d. Alphabetical Listing of PHP Functions (r-z)
strrchr( ) function: 4.7.4.2. Searches returning rest of string
A.3d. Alphabetical Listing of PHP Functions (r-z)
str_repeat( ) function: 4.7.2. Miscellaneous String Functions
A.3d. Alphabetical Listing of PHP Functions (r-z)
str_replace( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
strrev( ) function: 4.7.2. Miscellaneous String Functions
A.3d. Alphabetical Listing of PHP Functions (r-z)
strrpos( ) function: 4.7.4.1. Searches returning position
A.3d. Alphabetical Listing of PHP Functions (r-z)
strspn( ) function: 4.7.4.3. Searches using masks
A.3d. Alphabetical Listing of PHP Functions (r-z)
strstr( ) function: 4.7.4.2. Searches returning rest of string
A.3d. Alphabetical Listing of PHP Functions (r-z)
strtok( ) function: 4.7.3.2. Tokenizing
A.3d. Alphabetical Listing of PHP Functions (r-z)
strtolower( ) function: 4.4.2. Changing Case
A.3d. Alphabetical Listing of PHP Functions (r-z)
strtoupper( ): 4.4.2. Changing Case
strtoupper( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
strtr( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
structs
storing extensionwide global C variables in: 14.10.3. Internal Extension Globals
storing resources in: 14.13. Resources
strval( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
stylesheets (XSLT): 11.4. Transforming XML with XSLT
B.1. Optional Extensions Listing
subclasses: 6.1. Terminology
A.2b. Alphabetical Listing of PHP Functions (f-i)
subpatterns in regular expressions: 4.8.5. Subpatterns
nesting: 4.10.7. Backreferences
non-capturing groups: 4.10.6. Non-Capturing Groups
replacing matched strings in: 4.9.3.2. Replacing
substituting new text for matching text: 4.8. Regular Expressions
substitution markers in printf( ) format string: 4.2.3. printf( )
substr( ) function: 4.7.1. Substrings
A.3d. Alphabetical Listing of PHP Functions (r-z)
substr_count( ) function: 4.7.1. Substrings
A.3d. Alphabetical Listing of PHP Functions (r-z)
substr_replace( ) function: 4.7.1. Substrings
A.3d. Alphabetical Listing of PHP Functions (r-z)
subtraction (-) operator: 2.4.5. Arithmetic Operators
sum, calculating for an array: 5.9.1. Calculating the Sum of an Array
superclasses: 6.1. Terminology
suppressing errors: 13.4.2. Error Suppression
Suraski, Zeev: 1.2.1. The Evolution of PHP
SWF (Shockwave Flash) extension: B.1. Optional Extensions Listing
switch statements: 2.5.2. switch
fall-through cases in: 2.5.2. switch
Sybase extension: B.1. Optional Extensions Listing
symbol table: 2.3.4. Garbage Collection
symbol_table global variable: 14.10.2. Executor Globals (EG)
symlink( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
syslog( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
system( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
security risks with shell commands: 12.7. Shell Commands
System V Semaphores and Shared Memory extensions: B.1. Optional Extensions Listing

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