F

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fclose function
    files
         closing
fetch modes
     DB class (PEAR)
fetching
     full rows of data in databases (MySQL) 2nd
     queried data in databases (MySQL) 2nd 3rd 4th
fgetcsv function
    data files
         retrieving 2nd
fgets function
    files
         reading
fields
    forms
         highlighting 2nd
         validation requirements 2nd 3rd
file directories
     changing
    contents
         viewing
file extensions
     shell scripts
file permissions
     Safe Mode restrictions 2nd 3rd 4th
    shell scripts
         exeucting 2nd
file_exists function
    file information
         retrieving 2nd
file_get_contents function
    files
         reading 2nd
file_put_contents function
    files
         writing 2nd
fileatime function
filectime function
filegroup function
fileinode function
filemtime function
fileowner function
fileperms function
files
    attributes
         testing (file_exists function) 2nd
    closing
         via fclose function
    opening
         via fopen function 2nd 3rd
    pointers
         moving (fseek function)
         moving (ftell function)
         writing to 2nd
    reading
         via fgets function
         via file_get_contents function 2nd
         via fread function
    remote
         handling via URLs
    writing
         via file_put_contents function 2nd
filesize function
filesystem access
     restricting 2nd
filesystems
    access management
         file copying 2nd
         file information 2nd
         file movement 2nd
         file names 2nd 3rd 4th 5th 6th
         file permissions 2nd 3rd
filetype function
finger command
    code listings
         Calling the finger Command from a Web Form (18.2) 2nd
float widths
     string formatting
floor function
     rounding number functions
flow control
     conditional statements 2nd 3rd
         Boolean values
         logical operators 2nd 3rd
         multiple condition branches 2nd
         operators 2nd
         switch statement 2nd
     loops
         breaking out of
         do 2nd
         for 2nd
         nested
         while 2nd
fopen function
    files
         opening 2nd 3rd
     mode arguments 2nd 3rd
for loop
    arrays
         looping through
for loops 2nd
foreach loop
    arrays
         looping through
FORM tag (HTML)
     ACTION attribute 2nd
     GET method
     METHOD attribute
     POST method
format codes
     string formatting 2nd 3rd 4th 5th
format specifiers
     string formatting
formatting
    strings
         format codes 2nd 3rd 4th 5th
         printf function 2nd 3rd 4th
         sprintf function 2nd
forms
     A Sample Registration Form with Required Fields (Listing 13.1) 2nd 3rd
    check boxes
         checking (dynamic HTML) 2nd
    code listings
         Defaulting the Value of a Text Input Field (12.1) 2nd
         Selecting a Default Item from a Menu (12.3) 2nd
         Selecting a Default Radio Button Group Item (12.2) 2nd
    default input values
         setting (dynamic HTML) 2nd
    email scripts
         creating 2nd 3rd 4th
     Form Validation Using Inline Warnings (Listing 13.2)
     hidden inputs 2nd
    menus
         creating (dynamic HTML) 2nd
         default selections (dynamic HTML) 2nd
         selecting multiple items (dynamic HTML) 2nd 3rd 4th
    radio buttons
         creating (dynamic HTML) 2nd 3rd
         selecting (dynamic HTML) 2nd
    validation
         data rules enforcement 2nd
         highlighting fields 2nd
         required fields enforcement 2nd 3rd
         warning displays 2nd 3rd 4th
    values
         accessing 2nd 3rd 4th
forms (HTML)
     *FORM* tag 2nd
     *INPUT* tag 2nd 3rd
     *SELECT* tag 2nd
     *TEXTAREA* tag
     submitting to PHP 2nd 3rd 4th 5th 6th 7th 8th 9th
     submitting user comments 2nd
forms processing
     php.ini file configuration directives 2nd 3rd
fputcsv function
    data files
         writing to
fputs function
     file pointer writing 2nd
fread function
    files
         reading
fseek function
     file pointer movement
ftell function
     file pointer movement
functions
     arguments 2nd
     array
     array manipulation
         array_diff
         array_intersect
         array_key_exists
         array_merge
         array_search
         array_unique
         asort 2nd
         count
         in_array
         ksort
         rsort
         serialize 2nd
         shuffle 2nd
         sort 2nd
         unserialize
     basename 2nd
     copy 2nd
     date 2nd
         format codes 2nd
     default argument values 2nd 3rd
     defining
         simple example 2nd 3rd
     disabling (disable_functions directive)
     ereq_replace 2nd
     error_log 2nd
         message_type argument
     escapeshellcmd 2nd 3rd
     fgetcsv 2nd
     file_exists 2nd
     fileatime
     filectime
     filegroup
     fileinode
     filemtime
     fileowner
     fileperms
     filesize
     filetype
     fputcsv
     fputs 2nd
     fwrite 2nd
     generate_checkboxes 2nd 3rd
     generate_menu 2nd
     generate_radio_button_group 2nd 3rd
     getcwd
     getdate 2nd
     headers_list 2nd
     headers_sent 2nd
     htmlentities
     ini_set
    library files
         creating 2nd 3rd
         including in other scripts
    mail
         form handling functions 2nd 3rd 4th
         return values 2nd
     mathematical
     mktime 2nd 3rd 4th
     mysql_affected_rows 2nd
     mysql_close
     mysql_connect 2nd 3rd
     mysql_errno 2nd 3rd 4th
     mysql_error 2nd 3rd 4th
     mysql_fetch_array 2nd
     mysql_num_rows
     mysql_query 2nd 3rd
     mysql_result 2nd
     mysql_select_db
    numeric
         rounding numbers 2nd 3rd 4th
     passthru 2nd
     php_sapi_name
     phpinfo 2nd
     print_r 2nd
     printf 2nd 3rd
         characters 2nd
     prototype 2nd
     putenv
     readdir
     realpath 2nd
     rename 2nd
     restricted use of in Safe Mode 2nd 3rd
    return codes
         failure 2nd
         success 2nd
     return values 2nd
     rewinddir
     session_start 2nd
     set_error_handler 2nd 3rd 4th
    setcookie
         cookie creation 2nd
     sprintf 2nd
     strtotime
     trigger_error 2nd
     unlink 2nd
    unsetcookie
         cookie deletion 2nd
     uses for
     variable scope 2nd 3rd
fwrite function
     file pointer writing 2nd