Symbols & Numbers | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

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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