PHP debug_backtrace() 函数生成一个 backtrace
该函数返回一个关联数组。
<code>下面是可能返回的元素</code>
| function | 字符串 | 当前的函数名 |
|---|---|---|
| line | 整数 | 当前的行号 |
| file | 字符串 | 当前的文件名 |
| object | 对象 | 当前对象 |
| type | 字符串 | 当前的调用类型，可能的调用： 返回: “->” – 方法调用返回: “::” – 静态方法调用返回 nothing – 函数调用 |
| args | 数组 | 如果在函数中，列出函数参数。如果在被引用的文件中，列出被引用的文件名 |
For Example one:
<code><span><span>class</span><span>Hello</span>{</span><span>private</span><span>$var</span>; <span>public</span><span>$var2</span>; <span>protected</span><span>$var3</span>; <span>public</span><span><span>function</span><strong style="color:transparent">￥本文来源gaodai#ma#com搞@@代~&码网^</strong><small>搞gaodaima代码</small><span>__construct</span><span>(<span>$var</span>,<span>$var2</span>,<span>$var3</span>)</span>{</span><span>$this</span>-><span>var</span>=<span>$var</span>; <span>$this</span>->var2=<span>$var2</span>; <span>$this</span>->var3=<span>$var3</span>; } }<span><span>function</span><span>test</span><span>(Hello <span>$hello</span>)</span>{</span><span>echo</span><span>"Hi this is a test function"</span>.<span>"<br>"</span>; print_r(debug_backtrace());}<span>$hello2</span>=<span>new</span> Hello(<span>'A'</span>,<span>'B'</span>,<span>'C'</span>);test(<span>$hello2</span>);</code>
实例One输出结果如下：
Hi this is a test function
Array ( [0] => Array (
[file] => D:\www\MyProjecttest\index4.php
[line] => 52
[function] => test
[args] => Array ( [0] => Hello Object ( [var:Hello:private] => A [var2] => B [var3:protected] => C ) ) ) )
注：在此只输出四个参数，分别是：file，line，function，args；
For Example Two:
<code><span><span>class</span><span>Hello</span>{</span><span>private</span><span>$var</span>; <span>public</span><span>$var2</span>; <span>protected</span><span>$var3</span>; <span>public</span><span><span>function</span><span>__construct</span><span>(<span>$var</span>,<span>$var2</span>,<span>$var3</span>)</span> {</span><span>$this</span>-><span>var</span>=<span>$var</span>; <span>$this</span>->var2=<span>$var2</span>; <span>$this</span>->var3=<span>$var3</span>; } <span><span>function</span><span>test</span><span>(Hello <span>$hello</span>)</span>{</span><span>echo</span><span>"Hi this is a test function"</span>.<span>"<br>"</span>; print_r(debug_backtrace()); }}<span>$hello2</span>=<span>new</span> Hello(<span>'A'</span>,<span>'B'</span>,<span>'C'</span>);<span>$hello2</span>->test(<span>$hello2</span>);</code>
实例Two输出结果如下：
Hi this is a test function
Array ( [0] => Array (
[file] => D:\www\MyProjecttest\index4.php
[line] => 54
[function] => test
[class] => Hello
[object] => Hello Object ( [var:Hello:private] => A [var2] => B [var3:protected] => C )
[type] => ->
[args] => Array ( [0] => Hello Object ( [var:Hello:private] => A [var2] => B [var3:protected] => C ) ) ) )
注：在此所有参数都输出了，分别是：file，line，function，class,object,type,args；
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