• Can I use echo inside a ternary expression?
• Can I use references to variables in PHP3?
• How can I check if a variable is defined?
• Can I access Environment Variables from inside PHP scripts?
• What Environment Variables are available to my PHP script?
• How does PHP choose integer or floating point division?
• How do I create a 2 or n dimensional array?
• How can I call a php script from within another and pass variables to it?
• How can I suppress PHP error messages for a single line of code?
• What is a ternary expression?
• What is this ? : syntax?
• Are static variables preserved across queries to PHP?
• Does PHP search sub-directories of the include file directory for includes?
• What is the difference between = and ==?
• Does the PHP interpreter get invoked for every <? ?> tag set?
• How many times is the PHP interpreter invoked for a page?
• What quotes can I use to make strings in PHP?
• Can I include a variable reference in a string?
• Can I reference array variables inside a quoted string?
• Why won't multi-dimensional array references work in a quoted string?
• Why does '$foo' not print the value of the variable $foo?
• Can I reference arrays without quotes?
• Does PHP support the use of bare words?
• What HTTP_ variables are available in PHP?
• Are function names case sensitive in PHP?
• Which one is faster for looping, for or while?
• How can I include a tab character in a string?
• Is the memory used by variables freed automatically during script execution?
• Do I need to explicitly free the memory used by variables in PHP scripts?
• How can I force a script to execute completely even if the user aborts?
• What is the OR operator in PHP?
• Can I escape from PHP code anywhere?
• Can I mix code and HTML tags?
• Does PHP support C-syntax if statements without braces?
• Why doesn't my PHP shell script work?
• Why will only print and echo work in my shell script?
• Why does my array in a loop contain data from previous loops?
• How can I a concatenate two arrays together?
• Can I execute multiple database queries in parallel from the same PHP script?
• How can I create a variable in PHP with an ASP style Application scope?
• How can I make two cases in a switch do the same thing?
• Does PHP switch work the same as C switch?
• Which tags should I use, <?php ?> or <? ?>?
• Will PHP return an error if I have a call to an undefined function but that code branch is not run?
• How can I exit or break out of a while loop?
• How can I loop over the values in an array?
• Can I return other file formats (like Word, Excel, etc) using PHP?
• Does $PATH_INFO work under Windows?
• What variables are used to store the x and y positions from an image input button?
• How can I add new items to the end of an array?
• How can I run PHP code that is in a string?
• How to evaluate a php script within another script, and pass arguments to the first?
• Which is faster, echo or print?
• How can I delete or deallocate an element from an array?
• I have been struggling to open a file and replace the current frameset with a new file. I try to open using readfile("filename.phtml?selected=$ref"); but this want open the file with the variable passed
• How do I implement a variable variable?
• I want to create an array that I can access from a various number of PHP scripts, is there any way I can do this without using the post and get form methods?
• How can I create variables that are available in all scripts?
• Why does require($file_name) in a loop just include the first file repeatedly?
• How do global variables and functions work?
• Can you include and call C libraries in PHP scripts? How?
• How can I echo all the keys and values of an array?
• Does return in an include file stop the entire script?
• Are PHP variable names case sensitive?
• Where can I find documentation on adding internal functions to PHP?
• Is there a way of forcing PHP to require explicit variable declaration, as in PERL with "use strict" ?
• What's the best way to design a single PHP page for a form and it's submission?
• How do conditionals work?
• How can I include an if statement inside a command?
• How can I determine if an array contains a value?
• Can I make PHP force me to declare variables before using them?
• Does PHP have an equivalent to Visual Basic's 'option explicit' command?
• Why does 0 == 'hello' in PHP?
• Does PHP use types when doing comparisons?
• How can I stop PHP from parsing the rest of a script?
• How can I safely display code entered by a user?
• How do I replace variables referenced within a string, when the string itself is also a variable?
• Text fields are not reset when I press the reset button. I use value=<? echo $fieldname; ?> Help me (i'm a beginner)
• Can PHP handel <DICTIONARY><SIMPLELIST><ITEM> ASP tags?
• Can I use PHP to write a search script which searches through meta tags in html pages and if so how?
• Is there a maximum length for a string?
• How can I disable the output of error messages inside the HTML page?
• I want to create an array that I can access from a various number of PHP scripts, is there any way I can do this without using the post and get form methods?
• What does the period do in this statement: $svarname = "other_site" . $i; Concactenation?
• Is there any way to force PHP to do garbage collection before the end of the request?
• how can I split year digits into 4 variables
• Do you know of any tool like javadoc and doc++ that works for PHP code?
• How can I call a variable from another script and use it as the value for a new hidden form name?
• How can I perform a syntax check of a php file?
• Why is a single quote and everything after it being truncated when loaded into a form text box? The other escaped characters are showing up.
• how to assign results of FOR loop to a variable as a string?
• How do would you go about populating a drop down menu box with information from a mySQL database?
• Is there any speed difference in using echo with single versus double quotes?
• Does anyone have a segment of BNF, EBNF or Syntax Graph representations of PHP?
• I'm looking for C++ like #define DBGFUN(x,y) either as empty statement or fun(x,y,__LINE__,__FILE_)
• How can I find a date 7 days in the future, if today maybe the 30th of a month ?!

Unanswered Questions

• In PHP3 how can you send info to one page but still be able to go to a link that is done in frames?
• How do I include a php script running on Apache server, in a '.shtml' file running on an IIS server?
• How do I check available system memory - basically to detect memory leaks in classes / functions ?
• Why can't I have a <SELECT> in a for loop?
• what is the difference between single and double quotes in c++?
• How can I execute a C program from my php file and pass command line arguments to it?
• As a beginner, I am attempting to understand -> and =>, I cannot find in the manual. please direct.
• how I know, when a person opens my mail? How I can get all info like time, date and other?
• Is there any possibility the PHP => operator may be replaced with the . (dot) operator?
• Can I include in a loop something that is true in two fields from a table? (Written text inserted)
• ! bypasses precedence with assignment. Why? and do !=, !== act the same?
• Is there something similar to asp's rs.movenext within a while loop?
• How do i export information from Excel to Mysql with PHP?
• How do I call a C++ program from within PHP? I need to pass a variable over to the C++ program.