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Index: I

ICAP extension: B.1. Optional Extensions Listing
icons, representing notes in PDF files: 10.6.1. Note Annotations
iconv extension (converting strings between encodings): B.1. Optional Extensions Listing
idempotence, HTTP requests: 7.4.1. Methods
identifiers: 2.1.6. Identifiers
class names: 2.1.6.3. Class names
constants: 2.1.6.4. Constants
database sequences: 8.4.5. Sequences
function names: 2.1.6.2. Function names
heredoc: 4.1.4. Here Documents
keywords and: 2.1.7. Keywords
variable names: 2.1.6.1. Variable names
identifying colors: 9.8.2. Identifying Colors
identity (===) operator: 2.4.8. Comparison Operators
4.6.1. Exact Comparisons
4.7.4. String-Searching Functions
if statements: 2.5.1. if
chaining: 2.5.1. if
else clause: 2.5.1. if
ignore_user_abort( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
ImageArc( ) function: 9.4.5. Basic Drawing Functions
ImageColorAllocate( ) function: 9.4.1. The Structure of a Graphics Program
9.8. Color Handling
ImageColorAt( ) function: 9.8.2. Identifying Colors
ImageColorResolveAlpha( ) function: 9.8. Color Handling
9.8.3. True Color Color Indexes
ImageColorsForIndex( ): 9.8.2. Identifying Colors
ImageCreate( ) function: 9.4.1. The Structure of a Graphics Program
9.8. Color Handling
ImageCreateFromJPEG( ) function: 9.4.4. Reading an Existing File
ImageCreateFromPNG( ) function: 9.4.4. Reading an Existing File
ImageDashedLine( ) function: 9.4.5. Basic Drawing Functions
ImageFill( ) function: 9.4.5. Basic Drawing Functions
ImageFilledPolygon( ) function: 9.4.5. Basic Drawing Functions
ImageFilledRectangle( ) function: 9.4.1. The Structure of a Graphics Program
9.4.5. Basic Drawing Functions
ImageFillToBorder( ) function: 9.4.5. Basic Drawing Functions
ImageJPEG( ) function: 9.4.1. The Structure of a Graphics Program
ImageLine( ) function: 9.4.5. Basic Drawing Functions
ImageLoadFont( ) function: 9.5.1. Fonts
ImagePNG( ) function: 9.4.1. The Structure of a Graphics Program
ImagePolygon( ) function: 9.4.5. Basic Drawing Functions
ImageRectangle( ) function: 9.4.5. Basic Drawing Functions
images: 1.4.4. Graphics
9.6.1. Caching the Dynamically Generated Buttons
converting to text: 9.8.4. Text Representation of an Image
creating and drawing: 9.4. Creating and Drawing Images
graphics program structure: 9.4.1. The Structure of a Graphics Program
dynamically generated, for buttons: 9.6. Dynamically Generated Buttons
embedding in a page: 9.1. Embedding an Image in a Page
file formats: 9.3. Basic Graphics Concepts
changing: 9.4.2. Changing the Output Format
EXIF extension: B.1. Optional Extensions Listing
testing for supported: 9.4.3. Testing for Supported Image Formats
true color: 9.3. Basic Graphics Concepts
GD extension, generating with: 9.2. The GD Extension
file formats supported: 9.2. The GD Extension
in PDF documents: 10.4.1. Images
templates for: 10.4.4. Templates
scaling: 9.7. Scaling Images
transparency: 9.3. Basic Graphics Concepts
9.3. Basic Graphics Concepts
(see also alpha channel)
with text: 9.5. Images with Text
fonts: 9.5.1. Fonts
ImageSetPixel( ) function: 9.4.5. Basic Drawing Functions
ImageString( ) function: 9.5. Images with Text
ImageTrueColorToPalette( ) function: 9.8. Color Handling
ImageTTFText( ) function: 9.5.2. TrueType Fonts
ImageWBMP( ) function: 9.4.1. The Structure of a Graphics Program
imagewidth and imageheight keywords: 10.4.1. Images
IMAP, POP, and NNTP extension: B.1. Optional Extensions Listing
Imlib2 extension: 9.2. The GD Extension
implicit casting: 2.4.4. Implicit Casting
implode( ) function: 4.7.3.1. Exploding and imploding
A.2b. Alphabetical Listing of PHP Functions (f-i)
import_request_variables( ): A.2b. Alphabetical Listing of PHP Functions (f-i)
in_array( ) function: 5.7.6. Searching for Values
A.2b. Alphabetical Listing of PHP Functions (f-i)
include construct: 2.6. Including Code
getting included files: A.2b. Alphabetical Listing of PHP Functions (f-i)
include( ) function: 15.2.6. Remote Files
include_once: 2.6. Including Code
opening remote files, security and: 12.2. Filenames
including remote files with PHP on Windows: 15.2.6. Remote Files
incrementing alphabetic characters: 2.4.7. Autoincrement and Autodecrement Operators
increments, expression: 2.5.4. for
indenting comments: 2.1.4.3. C comments
indexed arrays: 5.1. Indexed Versus Associative Arrays
calculating sum of values: 5.9.1. Calculating the Sum of an Array
database query results: 8.3.5.3. Inside a row array
initializing (example): 5.3. Storing Data in Arrays
slicing: 5.5.1. Slicing an Array
sorting, functions for: 5.8.1. Sorting One Array at a Time
indexes, true color: 9.8.3. True Color Color Indexes
inequality (!= or <>) operators: 2.4.8. Comparison Operators
infinite loops: 2.5.4. for
print_r( ) function used on recursive structures: 4.2.4. print_r( ) and var_dump( )
Informix databases (extension for): B.1. Optional Extensions Listing
Ingres II databases (extension for): B.1. Optional Extensions Listing
inheritance: 6.1. Terminology
6.4.3. Inheritance
INI entries, defining in extensions: 14.12. Extension INI Entries
ini_alter( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
ini_get( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
ini_restore( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
ini_set( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
initializing
arrays: 5.3. Storing Data in Arrays
PDF documents: 10.2.2. Initializing the Document
variables: 12.1.1. Initialize Variables
inline options (within patterns): 4.10.9. Inline Options
inode values for files: A.2b. Alphabetical Listing of PHP Functions (f-i)
inproc server: 15.3.1. Background
inserting array elements: 5.5.5. Removing and Inserting Elements in an Array
inserting text into strings: 4.7.1. Substrings
installing PHP: 1.3. Installing PHP
configuring Apache and PHP: 1.3. Installing PHP
downloading source distribution: 1.3. Installing PHP
on Windows: 15.1. Installing and Configuring PHP on Windows
automatic configuration with PHP installer: 15.1.2.2. Using the PHP installer to automatically configure PHP
(int) casting operator: 2.4.11. Casting Operators
integers: 2.2.1. Integers
A.2b. Alphabetical Listing of PHP Functions (f-i)
extension functions returning: 14.8.1. Simple Types
padding for printf( ) output: 4.2.3.2. Type specifiers
storing as longs: 14.6. The pval/zval Data Type
InterBase databases, extension for: B.1. Optional Extensions Listing
interlacing GIF images: 10.4.1. Images
internal extension globals: 14.10.3. Internal Extension Globals
internationalization
ctype library, checking correctness for current locale: B.1. Optional Extensions Listing
gettext extension: B.1. Optional Extensions Listing
in PDF file text: 10.3.5. Embedding Fonts
information about current locale: A.2c. Alphabetical Listing of PHP Functions (j-q)
POSIX-style regular expressions, working with: 4.9. POSIX-Style Regular Expressions
setlocale( ) function: A.3d. Alphabetical Listing of PHP Functions (r-z)
Internet protocols
different, server connections via: B.1. Optional Extensions Listing
TCP protocol for databases: 8.3.1. Data Source Names
interpolation, variable: 4.1.1. Variable Interpolation
in double-quoted strings: 4.1.3. Double-Quoted Strings
into array index: 5.2. Identifying Elements of an Array
lookup of multidimensional array: 5.4. Multidimensional Arrays
intersection of two sets: 5.10.1. Sets
introspection: 6.5. Introspection
examining classes with display_classes( ): 6.5.1. Examining Classes
sample program: 6.5.3. Sample Introspection Program
intval( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
ip2long( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
iptcparse( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
IPv4 addresses, converting to standard format: A.2c. Alphabetical Listing of PHP Functions (j-q)
IRC gateway extension: B.1. Optional Extensions Listing
is_array( ) function: 2.2.5. Arrays
A.2b. Alphabetical Listing of PHP Functions (f-i)
is_bool( ) function: 2.2.4. Booleans
A.2b. Alphabetical Listing of PHP Functions (f-i)
is_dir( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
is_double( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
is_executable( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
is_file( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
is_float( ) function: 2.2.2. Floating-Point Numbers
A.2b. Alphabetical Listing of PHP Functions (f-i)
is_int( ) function: 2.2.1. Integers
A.2b. Alphabetical Listing of PHP Functions (f-i)
is_integer( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
is_link( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
is_long( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
is_null( ) function: 2.2.8. NULL
A.2b. Alphabetical Listing of PHP Functions (f-i)
is_numeric( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
ISO-8859-1 character encoding: 11.3.6.1. Character encoding
is_object( ) function: 2.2.6. Objects
6.5.2. Examining an Object
A.2b. Alphabetical Listing of PHP Functions (f-i)
is_readable( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
is_real( ): A.2b. Alphabetical Listing of PHP Functions (f-i)
is_resource( ) function: 2.2.7. Resources
A.2b. Alphabetical Listing of PHP Functions (f-i)
is_scalar( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
isset( ) function: 2.3.4. Garbage Collection
5.5.4. Checking Whether an Element Exists
A.2b. Alphabetical Listing of PHP Functions (f-i)
is_string( ) function: 2.2.3. Strings
A.2b. Alphabetical Listing of PHP Functions (f-i)
is_subclass_of( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
is_uploaded_file( ) function: 12.3.3. Surviving register_globals
is_writable( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
is_writeable( ) function: A.2b. Alphabetical Listing of PHP Functions (f-i)
iterator functions, building table with: 5.7.2. The Iterator Functions
iterators: 5.7.2. The Iterator Functions

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