Knowledge Base Contributions

Below is a list of the knowledge base entries that Nathan Wallace has contributed to:

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• Is there any inverse of file(), that is, write out an array to a file?
  

• Why does Netscape request an animated gif on every loop?
  What happens if I use an Expires header with an animated gif?
  

• Does crypt() work under Windows NT?
  

• If I write an infinite loop, will PHP ever stop it from running?
  Does a PHP script stop executing when the user presses their stop button?
  

• Why does PHP only run in a DOS window?
  I also can only run PHP in a DOS Window. When I try to run it using IE Explorer V4 It does not proce
  

• How can I import a flat file into MySQL?
  

• How can I write fixed width left justified text using sprintf?
  

• Is there a debugger available for PHP?
  How can I debug PHP scripts?
  

• How can I get the number of rows returned by SELECT in Oracle?
  

• Does the PHP interpreter get invoked for every <? ?> tag set?
  How many times is the PHP interpreter invoked for a page?
  

• I'm protecting a dir with .htaccess. How can I get the password?
  

• How can I use PHP as a FTP client?
  

• Do the PHP IMAP functions handle POP?
  

• What is the difference between = and ==?
  

• What sort of array does mysql_fetch_array return?
  Why does each() return every column twice after a query?
  

• How can I search a database for part of a string?
  How do I use LIKE in a query?
  What is the wildcard symbol in SQL?
  How to speed up a like??
  How to create an query that uses like and or that doesn't take forever to return reuslts?
  How to create an or query with using a like?
  

• How can I return a limited number of the rows found?
  How can I show only n (eg: 10) results per page?
  

• What options are available in pg_connect?
  

• How can I get PHP to dump core?
  How can I get a coredump from PHP for debugging purposes?
  

• How can I force a link to result in the user downloading a file?
  

• Can I use HTTP Authentication with CGI PHP?
  How can I set up HTTP Authentication using PHP CGI?
  

• Why is $PHP_SELF empty from a Netscape browser but not from IE?
  

• Why does PHP support disappear when I reboot my machine?
  

• How can I show an ampersand (&) in a HTML page?
  

• How can I pass an ampersand (&) in a url?
  

• If I altered the values (of a form submission) after a POST how do i display them back in the form?
  

• What does an ampersand (&) before a function parameter do?
  How can I pass a variable by reference to a function?
  

• How do I enable MySQL for PHP under Windows?
  

• How can I build a printer friendly page?
  

• Can PHP determine the browser window size?
  How can I determine the size of the browser in Javascript?
  How can I get the color depth that the client is using?
  

• Does PHP search sub-directories of the include file directory for includes?
  

• Where can I find out about security issues with PHP?
  

• How can I disable PHP(version 3, 4) in user directories?
  

• How can I make a .php vi syntax file work for .phtml files too?
  

• How can I change the extension that PHP uses?
  

• Why is my PHP code executed in Microsoft browser but not in Netscape´s one?
  

• How can I pass variables to a script in the url like /script/var1/var2?
  How can I pass variables in a form that won't scare off search engines?
  

• How can I call a polymorphed parent function?
  I have a subclass with method foo(), can I call foo() in the parent?
  

• How do I setup the GD library with PHP to create dynamic graphics?
  

• How can I add CC and BCC headers to mail sent from PHP? . And what about multiple BCC:'s and CC:'s?
  

• Can I install PHP as an Apache .so module?
  Can I install PHP as an Apache DSO module?
  

• How can I use an array as a form variable?
  Can I pass an array from one script to another?
  How can I use a multi-dimensional array as a form variable?
  

• How can I print large HTML documents in a book style format?
  

• How can I authenticate against an NT domain?
  

• What is the official PHP logo?
  Where can I get a 'powered by PHP' logo for my site?
  

• How can I check the user agent string for Macintosh computers?
  

• How do I get out the result of a query like "select count(*) from $table"?
  

• How can I find all duplicates in a database column?
  

• Are static variables preserved across queries to PHP?
  

• What is the difference between CGI PHP and a PHP module?
  

• How can I delete all rows in a database table that are 30+ days old?
  

• How can I check if a credit card is valid?
  

• What is a ternary expression?
  What is this ? : syntax?
  

• Can I return a value from a class constructor?
  How can I return an error from a class constructor?
  

• How does PHP handle arrays of objects?
  

• How can I get the results of a unix command into PHP?
  

• Are clibpdf and pdflib the same?
  

• How can I suppress PHP error messages for a single line of code?
  What is the @ operator used for?
  How can I hide PHP warning messages?
  

• What should be used to pass encrypted data back and forth?
  How to post data to port 443 (SSL) with PHP socket ?
  I am using mcrypt library to encrypt the data. I want to pass the encrypted data in url. The problem
  

• How can I check that I have IMAP support?
  

• How can I work out the day of week from the (MySQL) date format YYYY-mm-dd?
  

• Can I change a form variable before it is submitted by the browser?
  

• Can I deserialize a wddx packet into javascript code using php3?
  

• Do Apache configuration directives use an = sign?
  

• Does PHP automatically free MySQL results when the script ends?
  Why does my continuously running MySQL script eat up memory?
  How can I free the memory allocated for results by MySQL?
  

• I've got MySQL connected, what do I do next?
  

• What's the easiest way to split a string up into equal size chunks?
  

• How can I call a php script from within another and pass variables to it?
  

• Can a 40-bit browser do 128-bit SSL?
  

• What's an easy way to cache a dynamic page as a static file?
  

• Are there any free PHP shopping carts available?
  

• Do the dbm* functions support Sleepycat's DB2?
  

• Where can I get PHP4?
  What is Zend?
  where can i get the latest mod-php RPM?
  

• How can I put rows from a database into a table?
  

• Can I change the default socket that PHP uses for MySQL?
  

• Can I set the php include path without changing php3.ini?
  

• How do I use cookies in PHP?
  

• Do I have to lock the table when using mysql_insert_id()?
  

• How can I make a PHP script be called from the cron daemon?
  

• Can I put include or require inside a class definition?
  

• Can I set an auto prepend file without changing php3.ini?
  Can PHP be configured to run a certain script before every page request?
  What is auto_prepend_file used for?
  

• How should I set up variables after a database query?
  

• Which one is faster, mysql_fetch_row or mysql_fetch_array?
  

• What are the official PHP web sites?
  

• How do I create a 2 or n dimensional array?
  

• How can I pass data between scripts using the URL?
  How do I make a GET request in PHP?
  

• Is there a PHP database schema generator available?
  

• I have PHP installed as a module, can I run scripts from the command line?
  

• Can I delete some data from a file without rewriting the whole thing?
  

• Can I use include or require inside a class definition?
  

• How should I get a date out of a database for comparison and operation?
  

• Why do upload and copy dirs have to have execution allowed?
  

• How can I make a HTML select box from the values in a database column?
  How can prompt the user for their state?
  

• What is a good editor for PHP under Windows (and or Linux, Unix, FreeBSD, Mac)?
  

• Can I string together object references, eg: $foo->bar()->try() ?
  

• Are the fonts in PHP anti-aliased?
  

• What does the "cannot add more header information" error mean?
  How can I find out if I am sending whitespace before calling header()?
  

• Which is better to use, oci or ora?
  

• How can I check a users login and password on every page visit?
  How can I maintain data across pages for a visitor?
  Does PHP have support for sessions?
  How can I force a member to login?
  

• Why are the files I create in PHP owned by "nobody"?
  Can I use suexec in Apache with the module version of PHP?
  

• What is the best PHP regular expression to match an anchor tag?
  

• Is it faster to pass a global variable to a function as an argument?
  

• Where can I get help compiling Apache, PHP and MySQL?
  

• How can I escape data to make it ready to insert into a database?
  

• Can I pass arguments to a function as a single string?
  

• Help! "call to unsupported or undefined function pg_connect()" error?
  

• How can I get more information about Oracle Errors?
  

• What databases can the PHP3 ODBC library connect to?
  

• Can I stop a page being displayed until the whole script has been parsed?
  

• How can I access data entered into a form by the user?
  When i update a variable with a drop-down menu, it adds its value tothe database instead of replacin
  

• What is parse_url used for?
  

• If I indent calls to include or require is the included script indented?
  

• How can I ensure that data entered by the user is numbers only?
  

• How can I stop my HTML output from being buffered?
  How can I stop STDOUT from being buffered?
  How can I send my HTML back to the client in chunks?
  

• What is available to integrate PHP and Cybercash?
  Is this option secure? Would it be possible to add after PHP has been compiled with Apache module?
  

• What is the Perl Compatible Regular Expressions support?
  

• Can I run both PHP2 and PHP3 on the same server?
  

• [a|b|c][d|e|f][g|h|i] How can I extract the data from this format?
  

• How does PHP choose integer or floating point division?
  

• How can I display a number with exactly 2 decimal places?
  How can I format a number for printing?
  

• What is the "Basic Realm" in WWW-Authenticate?
  

• Can I access Environment Variables from inside PHP scripts?
  What Environment Variables are available to my PHP script?
  What HTTP_ variables are available in PHP?
  

• How can I get the nth root of a number?
  How can I get the cube root of a number?
  

• Why does $HTTP_REFERER return an empty string?
  

• How do I reference a variable that is defined inside a class?
  

• How can I check if a variable is defined?
  Does isset() return true for empty variables?
  What is the difference between isset() and empty()?
  

• How can I avoid printing line "Content-type: text/html" with PHP3-CGI?
  

• AddSlashes keeps being run automatically. What's happening?
  Why are the apostrophes and quotes in my form data always doubled up?
  How do I stop my multi page form elements from looking like this: foobar\\\\\\\\'s?
  

• How can I loop over a range of dates?
  

• What is the most efficient way to implement counters?
  

• What is a symlink?
  

• How can I run a process from a script and not wait for it to finish?
  How can I start a background process from a PHP script?
  

• Can I use references to variables in PHP3?
  

• What is the "Unable to initialize a new token cache" error?
  

• Can I define a method called 'empty' inside a class?
  

• How can I make a graphical reset button?
  

• How can I let a user upload a file to the server in PHP?
  

• How do I automatically open a URL in a new browser window?
  

• How do I get the header information from a message using IMAP?
  How to save to a file, the message source, with all the hearder information, body and mime parts, to
  

• How can I pass a string with spaces as a GET request argument?
  Why does my URL that contains a blank get truncated?
  

• How can I replace all sequences of <li> with a single <li>?
  

• How can I stop multiple database entries from users pressing reload?
  

• How do I run PHP from the command line or as a shell script?
  How to pass an argument to php run as cgi?
  How to change include_path for php run as cgi? (no access to php.ini)
  How to encrypt my php code?
  How do you install PHP in CGI Mode??? There is no doco on the subject!!!
  

• How can I stop Third Voice notes being posted on my site?
  

• How can I replace returns with <br>s?
  

• PHP equivalent of Perl's ($a, $b) = split(/\t/, "Hello\tthere"); ?
  

• How can I improve a whois interface for faster client response?
  

• Where can I get a PHP Binary distribution for Windows?
  

• What is the difference between require() and include()?
  

• Can I use echo inside a ternary expression?
  

• How do I set a global variable variable in a function?
  

• How do I redirect a client browser to a different URL?
  Send a redirect from a frames page always goes to a frame. I want it to load a brand new page
  

• How can I run user PHP scripts as their own UID?
  

• What is the difference between echo and print?
  Which is faster, echo or print?
  
  
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