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php Programming Glossary: expensiveCaching HTTP responses when they are dynamically created by PHP http://stackoverflow.com/questions/10596116/caching-http-responses-when-they-are-dynamically-created-by-php If your content is generated from PHP and particularly expensive to create you could write the output to a local file and apply..
php String Concatenation, Performance http://stackoverflow.com/questions/124067/php-string-concatenation-performance and C# strings are immutable and it can be computationally expensive to build a string one character at a time. In said languages..
Good PHP Metric tools [closed] http://stackoverflow.com/questions/1300420/good-php-metric-tools capability to determine which part of your code is expensive. We offer both counting profilers that provide execution counts..
Speed difference in using inline strings vs concatenation in php5? [closed] http://stackoverflow.com/questions/13620/speed-difference-in-using-inline-strings-vs-concatenation-in-php5 a simple internal string concat. Even if the concat were expensive the interpolator will still have to do it after all the work..
How can I store my users' passwords safely? http://stackoverflow.com/questions/1581610/how-can-i-store-my-users-passwords-safely is based on the Blowfish block cipher making use of it's expensive key setup to slow the algorithm down. share improve this answer..
Using PHP/Apache to restrict access to static files (html, css, img, etc) http://stackoverflow.com/questions/2187200/using-php-apache-to-restrict-access-to-static-files-html-css-img-etc used IPs. I worry that my first solution could get pretty expensive on the server as the number of users and files they are accessing.. increases. I think my second solution would be much less expensive but is also less secure due to IP spoofing and etc. I also worry..
http://stackoverflow.com/questions/2921469/php-mutual-exclusion-mutex hard disk Is it really so I mean this makes locking really expensive it means each time I want to lock I'll have to access the hard..
Performance of FOR vs FOREACH in PHP http://stackoverflow.com/questions/3430194/performance-of-for-vs-foreach-in-php thing to watch for is for i 0 i count array i That's on expensive loop since it calls count on every single iteration. So long..
What is the difference between the | and || or operators? http://stackoverflow.com/questions/35301/what-is-the-difference-between-the-and-or-operators even if 1 is already true. As your conditions can be quite expensive functions you can get a good performance boost by using them...
Why are PHP function calls *so* expensive? http://stackoverflow.com/questions/3691625/why-are-php-function-calls-so-expensive are PHP function calls so expensive A function call in PHP is expensive. Here is a small benchmark.. PHP function calls so expensive A function call in PHP is expensive. Here is a small benchmark to test it create test string string.. function. I would like to know why a function call is so expensive. What's the main bottleneck Is it the lookup in the hash table..
Secure hash and salt for PHP passwords http://stackoverflow.com/questions/401656/secure-hash-and-salt-for-php-passwords to brute force a password by increasing blowfish's already expensive key schedule. Average practices I almost can't imagine this..
Process mathematical equations in php http://stackoverflow.com/questions/4019418/process-mathematical-equations-in-php strings and turn them into equations however this sounds expensive and problematic. The other option is to pass them through eval..
Is there a performance benefit single quote vs double quote in php? [duplicate] http://stackoverflow.com/questions/482202/is-there-a-performance-benefit-single-quote-vs-double-quote-in-php a simple internal string concat. Even if the concat were expensive the interpolator will still have to do it after all the work..
Geo-Search (Distance) in PHP/MySQL (Performance) http://stackoverflow.com/questions/5236921/geo-search-distance-in-php-mysql-performance clause of your SQL query so that you're only executing the expensive distance calculation on that subset of rows rather than against.. your performance because it means you're only doing the expensive distance calculation on a small subset of your data. This is..
What is the best way to stop people hacking the PHP-based highscore table of a Flash game http://stackoverflow.com/questions/73947/what-is-the-best-way-to-stop-people-hacking-the-php-based-highscore-table-of-a-f isn't to stop this attack it's to make the attack more expensive than just getting really good at the game and beating it. share..
Improve password hashing with a random salt http://stackoverflow.com/questions/9420722/improve-password-hashing-with-a-random-salt computed rainbow tables . Salt makes brute force much more expensive in time memory terms for the attacker. Calculating such a table.. memory terms for the attacker. Calculating such a table is expensive and usually only done when it can be used for more than one.. a brute force attack calculating rainbow tables even more expensive... please don't invent yourself there are proven standard methods..
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