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Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [Z] radio buttons forms creating (dynamic HTML) 2nd 3rd selecting (dynamic HTML) 2nd rand function random number generation 2nd random number generator Mersenne Twister random numeric functions rand 2nd srand randomizing arrays 2nd read-only access permission (files) 2nd readdir function directories navigation functions reading files via fgets function via file_get_contents function 2nd via fread function realpath function filenames 2nd records retrieving (PEAR DB class) 2nd redirection headers (HTTP) 2nd regex [See regular expressions] regular expressions character classes alnum alpha digit lower punct space upper characters testing for repeat patterns 2nd 3rd functions ereq_replace 2nd PCRE ereq function 2nd 3rd 4th Perl-Compatible Regular Expression (PCRE) POSIX-extended syntax strings breaking into components 2nd searching and replacing 2nd testing position 2nd wildcard matching 2nd user input validation examples email addresses 2nd 3rd telephone numbers zip codes 2nd regular expressions (regex) remote files handling via URLs rename function files 2nd renaming files rename function 2nd repeat patterns testing characters in regular expressions 2nd 3rd replacing strings in regular expressions 2nd reporting errors constants 2nd 3rd 4th 5th logs 2nd 3rd php.inio file configuration directives 2nd preventing display of user errors, raising 2nd require keyword library function files require once keyword library function files retrieving data files via fgetcsv function 2nd file information file_exists function 2nd records (PEAR DB class) 2nd return values functions 2nd failure 2nd success 2nd mail function example 2nd rewinddir function directories navigation functions round function rounding number functions 2nd rounding number functions ceil floor round 2nd rsort function array manipulation |
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