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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.

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