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php Programming Glossary: opcodesOptimizing Kohana-based Websites for Speed and Scalability http://stackoverflow.com/questions/1260134/optimizing-kohana-based-websites-for-speed-and-scalability goes in two steps Compilation of the PHP source code to opcodes kind of an equivalent of JAVA's bytecode Execution of those.. of an equivalent of JAVA's bytecode Execution of those opcodes APC keeps those in memory so there is less work to be done each.. each time a PHP script file is executed only fetch the opcodes from RAM and execute them. You might need to take a look at..
Do PHP opcode cache work with __autoload? http://stackoverflow.com/questions/1396501/do-php-opcode-cache-work-with-autoload required it take the full path to that file check if the opcodes corresponding to that file are already in RAM in opcode cache.. so they are executed if no load the file and compile it to opcodes and store opcodes in cache. The important point here is the.. if no load the file and compile it to opcodes and store opcodes in cache. The important point here is the entry point the full..
Simultaneous Requests to PHP Script http://stackoverflow.com/questions/1430883/simultaneous-requests-to-php-script for each process the PHP file in memory is compiled to opcodes still in memory those opcodes are executed still from the block.. in memory is compiled to opcodes still in memory those opcodes are executed still from the block of memory that belongs to..
http://stackoverflow.com/questions/1795425/how-to-get-opcodes-of-php to get opcodes of PHP php show_value 123 echo 'sing_quote'. show_value echo.. Disassembler hooks into the Zend Engine and dumps all the opcodes execution units of a script. It was written as as a beginning..
PHP include(): File size & performance http://stackoverflow.com/questions/2298196/php-include-file-size-performance loading a .php file The PHP source code is compiled to opcodes that's quite equivalent to JAVA bytecode This is done each time.. by default But using some opcode cache like APC those opcodes can be kept in memory and this compilation stuff not done each.. be done anymore it'll be done only once in a while . The opcodes are executed Depending on what you script contains this can..
Android file uploader with server-side php http://stackoverflow.com/questions/3204476/android-file-uploader-with-server-side-php
Why are PHP function calls *so* expensive? http://stackoverflow.com/questions/3691625/why-are-php-function-calls-so-expensive func arg1 arg2 There are six four one for each argument opcodes 1 INIT_FCALL_BY_NAME 'func' 'func' 2 EXT_FCALL_BEGIN 3 SEND_VAL.. EXT_FCALL_END You can check the implementations of the opcodes in zend_vm_def.h . Prepend ZEND_ to the names e.g. for ZEND_INIT_FCALL_BY_NAME..
Why don't PHP attributes allow functions? http://stackoverflow.com/questions/3960323/why-dont-php-attributes-allow-functions and zend_do_add_static_array_element do not generate new opcodes. Instead the array is immediately created and added to the current.. Herein lies the root of the problem. By adding these opcodes zend_do_early_binding gets an unexpected input and throws an.. it's not practical to try and evaluate these additional opcodes inline you can't be sure that a given function or class has..
Reference: Comparing PHP's print and echo http://stackoverflow.com/questions/7094118/reference-comparing-phps-print-and-echo echo 125 ECHO 125 multi value echo compiles to multiple opcodes echo 123 456 ECHO 123 ECHO 456 Note that multi value echo doesn't..
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