Index: E

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Index: E

each( )

array values and: 6.9.3. Discussion
sparsely filled arrays: 4.24.3. Discussion
using with list( ) and while loops for array iteration: 4.5.2. Solution

ECB (Electronic Code Book) mode: 14.8.3. Discussion

echo: 18.19.3. Discussion

elapsed time

between two dates: 3.6.1. Problem
execution time for each line of PHP code: 8.26.3. Discussion
since epoch, high precision times: 3.14.3. Discussion

Electronic Code Book (ECB) mode: 14.8.3. Discussion

elements

array (see arrays)

HTML, with multiple options (in forms): 9.11.1. Problem

XML

creating new for document: 12.3.3. Discussion
nodes: 12.3.3. Discussion
searching DOM tree for: 12.4.3. Discussion

ellipses, drawing: 15.3.2. Solution

filled: 15.3.3. Discussion

encrypting with GPG: 14.12.1. Problem
sending: 17.2.1. Problem
text addresses, converting to mailto: hyperlinks: 13.1. Introduction
web-based client for: 17.4.1. Problem

email addresses

comments embedded in: 13.6.3. Discussion
hiding from address-harvesting robots: 8.13.3. Discussion
matching valid with regular expressions: 13.6.1. Problem
"do not send" list: 17.2.3. Discussion
RFC 822-compliant address parser in IMAP extension: 13.6.3. Discussion

emphasized text, using <b> or <i> HTML tags: 18.17.3. Discussion

empty set: 4.25.3. Discussion

empty strings

assigning as default function parameter value: 6.3.3. Discussion
assigning to array elements: 4.6.3. Discussion
error messages: 6.3.3. Discussion

empty variables, unset variables as: 5.1. Introduction

enable-ftp: 17.7.3. Discussion

encoding

base64 encoding: 14.3.1. Problem

format strings for: 1.14.3. Discussion

HTML entities: 11.10.2. Solution

in HTML-formatted RSS item: 12.5.3. Discussion

pc_encode( ): 9.4.3. Discussion

URL: 8.9.2. Solution

variables and values into textual form: 5.8.2. Solution

encryption: 14.1. Introduction

checking password strength: 14.6.1. Problem

email, encrypting with GPG: 14.12.1. Problem

encrypting/decrypting data, algorithms for: 14.8.1. Problem

listing of mcrypt algorithms: 14.8.3. Discussion

keeping passwords out of site files: 14.2.1. Problem

lost passwords, dealing with: 14.7.1. Problem

mcrypt library: 14.1. Introduction

mhash module, hash algorithms: 14.4.3. Discussion

obscuring data with encoding: 14.3.1. Problem

one-way: 14.1. Introduction

sharing encrypted data with another web site: 14.10.1. Problem

SSL: 14.11.1. Problem

storing encrypted data in file or database: 14.9.1. Problem

storing passwords: 14.5.1. Problem

verifying data with hashes: 14.4.1. Problem

end-of-string identifier: 1.1. Introduction

end tags, PHP: 18.14.3. Discussion

end_element( ): 12.5.3. Discussion

entities, HTML: 8.9.3. Discussion

encoding: 11.10.2. Solution
encoding for HTML-formatted RSS item: 12.5.3. Discussion
encoding in user-entered data: 9.9.3. Discussion

$_ENV superglobal array: 8.21.3. Discussion

9.1. Introduction

environment variables

HOME and USER, setting for GPG: 14.12.3. Discussion
HTTP_USER_AGENT: 8.8.3. Discussion
LC_ALL: 16.4.3. Discussion
ORACLE_SID: 10.1. Introduction
reading: 8.21.1. Problem
setting: 8.22.1. Problem
storing passwords in: 14.2.2. Solution

epoch timestamps: 3.1. Introduction

19.2.3. Discussion
altering by amount of time zone's offset from UTC: 3.13.3. Discussion
converting human-readable date and time strings to: 3.10.2. Solution
converting Julian days to/from: 3.11.3. Discussion
converting to/from time and date parts: 3.3.1. Problem
cookies expiration times and: 8.2.3. Discussion
finding difference between: 3.6.2. Solution
localtime( ), use of: 3.2.3. Discussion

equality operator (==): 4.12.3. Discussion

ereg( ): 3.10.3. Discussion

ereg functions: 13.1. Introduction

converting to preg: 13.2.1. Problem
escaping metacharacters: 13.9.1. Problem
preg functions vs.: 13.1. Introduction

eregi( ) case-insensitive matching: 13.2.2. Solution

ereg_replace( ): 13.2.3. Discussion

error handling

custom error handler, using: 8.17.1. Problem

eliminating "headers already sent" errors: 8.19.1. Problem

error types, listing of: 8.16.3. Discussion

HTML errors, disabling: 8.24.3. Discussion

logging program errors: 8.18.1. Problem

_ _FILE_ _ and _ _LINE_ _ constants: 8.18.3. Discussion

reporting levels: 8.16.3. Discussion

tuning by altering error-logging sensitivity: 8.16.1. Problem

error messages

default or empty: 6.3.3. Discussion
hiding from users: 8.15.1. Problem

error_log( ): 8.18.2. Solution

error_reporting( ): 8.16.2. Solution

errors

database, logging: 10.11.1. Problem

classes for: 10.11.3. Discussion

functions with identical names: 6.1. Introduction

Getopt_Error class: 20.3.3. Discussion

logging: 6.11.3. Discussion

misspelling parameter names: 6.5.3. Discussion

standard error, reading from a program: 18.24.1. Problem

writing to standard error: 18.19.3. Discussion

escape sequences, string: 1.1. Introduction

escapeshellarg( ): 18.21.2. Solution

19.12.3. Discussion

escaping: 18.21.1. Problem

HTML entities: 8.9.3. Discussion

11.10.2. Solution

metacharacters in regular expressions: 13.9.1. Problem

quotes in query data: 10.10.1. Problem

regular expression pattern delimiters: 13.2.3. Discussion

SQL and shell globbing wildcards: 10.10.3. Discussion

user-entered data on HTML page: 9.9.1. Problem

European languages, characters for: 16.12.3. Discussion

E_USER_ERROR: 10.11.3. Discussion

E_USER_NOTICE: 10.11.3. Discussion

E_USER_WARNING: 10.11.3. Discussion

eval( ): 7.13.2. Solution

event-based parsing: 12.5.3. Discussion

Event Log (Windows NT): 8.15.3. Discussion

exclusive locks: 18.25.3. Discussion

execute( ): 10.7.3. Discussion

execute( ) (DB): 10.7.2. Solution

10.8.2. Solution

execute permission: 19.1. Introduction

executeMultiple( ) (DB): 10.8.3. Discussion

exp( ): 2.9.2. Solution

expat library: 12.5.3. Discussion

processing an RSS feed and transforming to HTML: 12.5.3. Discussion
WDDX, use with: 12.11.3. Discussion

expiration time for cookies: 8.2.3. Discussion

past, for deleting cookies: 8.4.2. Solution

explode( )

bar chart graphic, sizing lines: 15.10. Program: Generating Bar Charts from Poll Results
comma-separated data and: 1.10.3. Discussion
generating time parts with date: 3.5.3. Discussion
parsing hash from cookie value: 14.4.3. Discussion
splitting on strings instead of regular expressions: 13.10.3. Discussion
strings, breaking into pieces: 1.12.2. Solution

exponents: 2.3.3. Discussion

2.9.1. Problem

expressions

between { and }, evaluating: 5.5.3. Discussion
interpolating within strings: 1.8.1. Problem

extended regular expressions (see ereg functions regular expressions)

extending classes: 7.1. Introduction

extends keyword: 7.1. Introduction

extensions

DOM XML: 12.3.2. Solution

parsing XML: 12.4.2. Solution

encryption functions: 14.1. Introduction

FTP: 17.7.1. Problem

GD: 15.1. Introduction

15.1. Introduction
(see also GD library)

gettext: 16.11.1. Problem

getting configuration variables for: 8.23.3. Discussion

IMAP: 13.6.2. Solution

17.4.2. Solution

LDAP: 17.8.2. Solution

mcrypt: 14.8.2. Solution

PHP Extension and Application Repository (PEAR): 21.1. Introduction

PHP-GTK: 20.1. Introduction

20.6.3. Discussion

Readline: 20.4.2. Solution

WDDX: 12.11.2. Solution

XML: 12.1. Introduction

XML-RPC: 12.7.2. Solution

xmlrpc-epi: 12.7.2. Solution

XSLT: 12.6.2. Solution

zip: 18.27. Program: Unzip

zlib: 18.26.2. Solution

extensions, filename: 19.5.3. Discussion

external programs, running: 18.21.3. Discussion

passing input to: 18.22.1. Problem

ext/standard/parsedate.y: 3.10.3. Discussion

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