[PHP] Variable vs Constant
what harm (in term of loading/performance) will it make if i declear a value as VARIABLE where i should make it as CONSTANT actually?? how about if i declear 100 values as VARIABLEs where all are CONSTANTs actually? thx HPS -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Variable vs Constant
Billy, There must be a limit to the number of variables you can use in php but I haven't run up against a limit yet, and php seems to run as fast on my high variable count code as my more mundane code. Obviously, the advantage of using variables is that you can group your variables/constants in one area at the top of your code and when you need to change one of the constants (and you know you will need to do this eventually) you won't need to look for it in amongst your code. Not really an answer to your question but more of an observation on my part. I hope one of the more experienced will also pipe in. Good Luck Hugh - Original Message - From: Billy [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, May 27, 2002 8:46 AM Subject: [PHP] Variable vs Constant what harm will it make if i declear a value as VARIABLE where i should make it as CONSTANT actually?? how about if i declear 100 values as VARIABLEs where all are CONSTANTs actually? thx HPS -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Variable vs Constant
Thx Hugh i got what u meanlet me give u more background for my problem i am now working on a project which was developed by some others b4. As the project is a multi-language enabled, there is a PHP file (language file) which has all the setting , say $i_no_record_exists_msg = There is no record at the moment.; $i_no_search_result_msg = Sorry, your search yielded no results. Please revise your search query and try again.; $i_alert_pleasefillin = Please fill in the ; $i_email_to = To; $i_status_approve = Approve; $i_status_pendinguser = Pending; $i_status_publish = Publish; $i_status_checkin = Check In; . .. .. In this language file, over 500 variables are declared. And what i scare is 1. programmatically, should i change all these to CONSTANT? (coz all these values will never change) 2. if there is difference in declaring variable and constant (say, memory space required), how much harm it will ? 3. as this file would be included in the entire systemthe downside will be even more thx Billy Hugh Danaher [EMAIL PROTECTED] wrote in message 000701c20620$885cd2e0$017f@localhost">news:000701c20620$885cd2e0$017f@localhost... Billy, There must be a limit to the number of variables you can use in php but I haven't run up against a limit yet, and php seems to run as fast on my high variable count code as my more mundane code. Obviously, the advantage of using variables is that you can group your variables/constants in one area at the top of your code and when you need to change one of the constants (and you know you will need to do this eventually) you won't need to look for it in amongst your code. Not really an answer to your question but more of an observation on my part. I hope one of the more experienced will also pipe in. Good Luck Hugh - Original Message - From: Billy [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, May 27, 2002 8:46 AM Subject: [PHP] Variable vs Constant what harm will it make if i declear a value as VARIABLE where i should make it as CONSTANT actually?? how about if i declear 100 values as VARIABLEs where all are CONSTANTs actually? thx HPS -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Variable vs Constant
Wouldn't it be a lot easier to do that with arrays? miguel On Tue, 28 May 2002, HPS wrote: i am now working on a project which was developed by some others b4. As the project is a multi-language enabled, there is a PHP file (language file) which has all the setting , say $i_no_record_exists_msg = There is no record at the moment.; $i_no_search_result_msg = Sorry, your search yielded no results. Please revise your search query and try again.; $i_alert_pleasefillin = Please fill in the ; $i_email_to = To; $i_status_approve = Approve; $i_status_pendinguser = Pending; $i_status_publish = Publish; $i_status_checkin = Check In; . .. .. In this language file, over 500 variables are declared. And what i scare is 1. programmatically, should i change all these to CONSTANT? (coz all these values will never change) 2. if there is difference in declaring variable and constant (say, memory space required), how much harm it will ? 3. as this file would be included in the entire systemthe downside will be even more thx Billy Hugh Danaher [EMAIL PROTECTED] wrote in message 000701c20620$885cd2e0$017f@localhost">news:000701c20620$885cd2e0$017f@localhost... Billy, There must be a limit to the number of variables you can use in php but I haven't run up against a limit yet, and php seems to run as fast on my high variable count code as my more mundane code. Obviously, the advantage of using variables is that you can group your variables/constants in one area at the top of your code and when you need to change one of the constants (and you know you will need to do this eventually) you won't need to look for it in amongst your code. Not really an answer to your question but more of an observation on my part. I hope one of the more experienced will also pipe in. Good Luck Hugh - Original Message - From: Billy [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, May 27, 2002 8:46 AM Subject: [PHP] Variable vs Constant what harm will it make if i declear a value as VARIABLE where i should make it as CONSTANT actually?? how about if i declear 100 values as VARIABLEs where all are CONSTANTs actually? thx HPS -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Variable vs Constant
what harm will it make if i declear a value as VARIABLE where i should make it as CONSTANT actually?? how about if i declear 100 values as VARIABLEs where all are CONSTANTs actually? thx HPS -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
