How to implement breakpoints in php
Today, the editor will share with you the relevant knowledge points about how to achieve breakpoints in php. The content is detailed and the logic is clear. I believe most people still know too much about this knowledge, so share this article for your reference. I hope you can get something after reading this article. Let's take a look at it.
1. Use phpdbg_break_function () to set a breakpoint for the testFunc () method. When this function is called in the code, the breakpoint is entered.
Prompt > r [Breakpoint # 0 in testFunc () at / Users/zhangyue/MyDoc/ blog article / dev-blog/php/202006/source/PHPDebug interactive extension .php: 11, hits: 1] > 00011: function testFunc () {00012: global $I; 00013: $I + = 3 Prompt > s [L12 0x109eef620 EXT_STMT / Users/zhangyue/MyDoc/ blog posts / dev-blog/php/202006/source/PHPDebug interactive extension .php] > 00012: global $I; 00013: $I + = 3; 00014: echo "This is testFunc! I: ". $I, PHP_EOL Prompt > s [L12 0x109eef640 BIND_GLOBAL $I "I" / Users/zhangyue/MyDoc/ blog article / dev-blog/php/202006/source/PHPDebug interactive extension .php] [L13 0x109eef660 EXT_STMT / Users/zhangyue/MyDoc/ blog post / dev-blog/php/202006/source/PHPDebug interactive extension .php] > 00013: $I + = 3 00014: echo "This is testFunc! I: ". $I, PHP_EOL; 00015:}
2. After two single steps, you can see that the opcode operation corresponding to global $I is BIND_GLOBAL. Continue to operate downward.
Prompt > s [L13 0x109eef680 ASSIGN_ADD $I 3 / Users/zhangyue/MyDoc/ blog post / dev-blog/php/202006/source/PHPDebug interactive extension .php] [L14 0x109eef6a0 EXT_STMT / Users/zhangyue/MyDoc/ blog post / dev-blog/php/202006/source/PHPDebug interactive extension .php] > 00014: echo "This is testFunc! I: ". $I, PHP_EOL 00015:} 00016: prompt > s [L14 0x109eef6c0 CONCAT "This is testFunc!" + $I ~ 1 / Users/zhangyue/MyDoc/ blog post / dev-blog/php/202006/source/PHPDebug interactive extension .php] [L14 0x109eef6e0 ECHO ~ 1 / Users/zhangyue/MyDoc/ blog post / dev-blog/php/202006/source/PHPDebug interactive extension .php] This is testFunc! Idev-blog/php/202006/source/PHPDebug 4 [L14 0x109eef700 EXT_STMT / Users/zhangyue/MyDoc/ blog post / dev-blog/php/202006/source/PHPDebug interactive extension .php] [L14 0x109eef720 ECHO "\ n" / Users/zhangyue/MyDoc/ blog article / dev-blog/php/202006/source/PHPDebug interactive extension .php] [L15 0x109eef740 EXT_STMT / Users/zhangyue/MyDoc/ blog article / dev-blog/php/202006/source/PHPDebug interactive expansion Exhibition .php] > 00015:} 00016: 00017: testFunc () These are all the contents of the article "how to achieve breakpoints in php". Thank you for reading! I believe you will gain a lot after reading this article. The editor will update different knowledge for you every day. If you want to learn more knowledge, please pay attention to the industry information channel.
