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E_ALL constant 
E_ERROR constant 
E_NOTICE constant 
E_PARSE constant 
E_STRICT constant 
E_WARNING constant 
EasyPHP package 
elements of arrays 
elements, XML
    accessing identically named 
    changing 
    generating XML from arrays 
    printing attributes of 
    printing contents of 
else clause, using with if( ) 
elseif( ), using with else and if( ) 
Emacs text editor 
email messages
    sending 
    sending confirmation messages for verification 
    validating addresses 
Empress PHP extension 
empty arrays 
encrypting
    data with mcrypt extension 
    passwords 
end tags (?>)  2nd  3rd 
entities, HTML )  [See htmlentities(]
epoch timestamps 
    number ranges in forms 
    printing formatted time strings 
    processing date/time <select> menus 
    working with date/time values as 
error_log( ) 
error_reporting configuration directive  2nd  3rd 
ErrorLog Apache configuration setting 
errors
    checking query success 
    checkpoints, adding 
    connecting to database programs 
    controlling where they appear 
    in databases, fixing 
    debugging programs 
    displaying error messages in forms  2nd 
    error handling in mysqli extension 
    in files, checking for 
    PHP-aware text editors 
    sending output before setcookie( ) or session_start( ) is called 
    syntax highlighting 
escapeshellargs( ) 
escaping 
    escape character 
    shell metacharacters 
    single quotes  2nd  3rd 
    special characters
        in filenames 
        in SQL queries 
    SQL wildcards 
Essential PHP Tools 
exercises
    answers to  [See answers to exercises]
    Appendix B 
    Chapter 10 
    Chapter 11 
    Chapter 12 
    Chapter 2 
    Chapter 3 
    Chapter 4 
    Chapter 5 
    Chapter 6 
    Chapter 7 
    Chapter 8 
    Chapter 9 
expiration times for cookies, setting  2nd 
explode( )  2nd 
extension configuration directive 
extension_dir configuration directive 
external commands, running from inside PHP 

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