我getTraceAsString()用来获取堆栈跟踪，但由于某种原因字符串被截断。
例如，抛出异常，我使用以下命令记录字符串：
catch (SoapFault $e) {
error_log( $e->getTraceAsString() )
}
打印出来的字符串是：
#0 C:\Somedirectory\Somedirectory\Somedirectory\Somedir\SomeScript.php(10): SoapClient->SoapClient(' http://www.ex ...')
如何获取要打印的完整字符串？
我创建了这个函数来返回一个没有截断字符串的堆栈跟踪：
function getExceptionTraceAsString($exception) {
$rtn = "";
$count = 0;
foreach ($exception->getTrace() as $frame) {
$args = "";
if (isset($frame['args'])) {
$args = array();
foreach ($frame['args'] as $arg) {
if (is_string($arg)) {
$args[] = "'" . $arg . "'";
} elseif (is_array($arg)) {
$args[] = "Array";
} elseif (is_null($arg)) {
$args[] = 'NULL';
} elseif (is_bool($arg)) {
$args[] = ($arg) ? "true" : "false";
} elseif (is_object($arg)) {
$args[] = get_class($arg);
} elseif (is_resource($arg)) {
$args[] = get_resource_type($arg);
} else {
$args[] = $arg;
}
}
$args = join(", ", $args);
}
$rtn .= sprintf(
"#%s %s(%s): %s%s%s(%s)\n",
$count,
$frame['file'],
$frame['line'],
isset($frame['class']) ? $frame['class'] : '',
isset($frame['type']) ? $frame['type'] : '', // "->" or "::"
$frame['function'],
$args
);
$count++;
}
return $rtn;
}
或者，您可以编辑截断输出的 php 源：https ://github.com/php/php-src/blob/master/Zend/zend_exceptions.c#L392
That solution is good but in my case it threw an error because my trace has internal functions in it. I added a few lines of code to check for that so the trace functions still works.
function getExceptionTraceAsString($exception) {
$rtn = "";
$count = 0;
foreach ($exception->getTrace() as $frame) {
$args = "";
if (isset($frame['args'])) {
$args = array();
foreach ($frame['args'] as $arg) {
if (is_string($arg)) {
$args[] = "'" . $arg . "'";
} elseif (is_array($arg)) {
$args[] = "Array";
} elseif (is_null($arg)) {
$args[] = 'NULL';
} elseif (is_bool($arg)) {
$args[] = ($arg) ? "true" : "false";
} elseif (is_object($arg)) {
$args[] = get_class($arg);
} elseif (is_resource($arg)) {
$args[] = get_resource_type($arg);
} else {
$args[] = $arg;
}
}
$args = join(", ", $args);
}
$current_file = "[internal function]";
if(isset($frame['file']))
{
$current_file = $frame['file'];
}
$current_line = "";
if(isset($frame['line']))
{
$current_line = $frame['line'];
}
$rtn .= sprintf( "#%s %s(%s): %s(%s)\n",
$count,
$current_file,
$current_line,
$frame['function'],
$args );
$count++;
}
return $rtn;
}
更改 php.ini 设置有log_errors_max_len帮助吗？
另外，请注意消息仅在输出期间被截断，您仍然可以通过调用 $exception->getMessage() 获得原始错误消息
在https://www.php.net/manual/exception.gettraceasstring.php#114980jTraceEx上还有 Ernest Vogelsinger 的出色配方，它支持链式异常并以类似 Java 的方式格式化。
这是直接取自他对 php.net 的评论的比较：
异常::getTraceAsString ：
#0 /var/htdocs/websites/sbdevel/public/index.php(70): seabird\test\C->exc()
#1 /var/htdocs/websites/sbdevel/public/index.php(85): seabird\test\C->doexc()
#2 /var/htdocs/websites/sbdevel/public/index.php(89): seabird\test\fail2()
#3 /var/htdocs/websites/sbdevel/public/index.php(93): seabird\test\fail1()
#4 {main}
jTraceEx：
Exception: Thrown from class C
at seabird.test.C.exc(index.php:78)
at seabird.test.C.doexc(index.php:70)
at seabird.test.fail2(index.php:85)
at seabird.test.fail1(index.php:89)
at (main)(index.php:93)
Caused by: Exception: Thrown from class B
at seabird.test.B.exc(index.php:64)
at seabird.test.C.exc(index.php:75)
... 4 more
Caused by: Exception: Thrown from class A
at seabird.test.A.exc(index.php:46)
at seabird.test.B.exc(index.php:61)
... 5 more
您可以打印回溯
debug_print_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
它不会截断。
示例打印将是
#0 W3\\Sausage\\Mushroom->setCredentials() called at [/sausage/common/library/W3/Vzaar/Api.php:40]
#1 W3\\Sausage\\Mushroom->__construct() called at [/sausage/common/modules/video.mod.php:24]
#2 ModVideo->__construct() called at [/sausage/common/core/modules.core.php:133]
#3 Modules->__get() called at [/sausage/common/search/Classified/ESAdapter.php:399]
#4 Base\\Search\\Classified\\ESAdapter->getVideoInfo() called at [/sausage/common/search/Classified/ESAdapter.php:436]
#5 Base\\Search\\Classified\\ESAdapter->fillDataSet() called at [/sausage/common/search/Adapter.php:58]
我（最近，很长一段时间后，当我想如何更好地、尽可能准确和描述性地发出异常警告）解决了 getTrace 报告不完整的问题，方法如下（可能不完美，但仍然可用）：
private function Create_TraceText()
{
$trace_text = "<b>TRACE:</b> <br /><br />\n";
$trace = $this -> getTrace();
for($index = 0; $index < count($trace); $index++)
{
$trace_text .= 'STEP ' . ($index + 1) . ":<br />\n";
foreach($trace[$index] as $trace_name => $trace_value)
{
$trace_value = $this -> Convert_StringifyEmpty($trace_value);
$trace_value = $this -> Convert_StringifyNull($trace_value);
$trace_value = $this -> Convert_StringifyArray($trace_value);
$trace_text .= strtoupper($trace_name == 'args' ? 'arguments' : $trace_name) . ': ' . $trace_value . "<br />\n";
}
$trace_text .= "<br />\n";
}
return $trace_text;
}
方法Create_TraceText调用（也是）我自己的三个其他方法。这些方法有以下目的：
我选择了私有可访问性，因为它是由处理报告组装的方法在内部调用的。但是，如果您愿意，可以将其公开。
它遍历跟踪，获取每个步骤的项目（键和它们的值）并将它们转换为下面写的形式的字符串
TRACE:
STEP 1:
FILE: A:\WWW\Kilometrovnik\Kilometrovnik.php
LINE: 166
FUNCTION: Execute
CLASS: VMaX\MarC\Assemblers\CodeGenerator
TYPE: ->
ARGUMENTS: not defined
上面的示例中只有一个步骤，但如果跟踪要求，可以重复（自动完成）。
注意：
当然，可以直接使用方法 getTrace。我选择了当前的方式来支持使代码更具可读性（并且可能更快 - 如果方法 getTrace 仅使用一次）。
此外，如果您愿意，您可以删除替换argswith arguments（并已写入args）或让跟踪项小写，默认情况下。
跟踪部分类和函数可以合并为方法。但这当然不是必需的。
示例来自我的 localhost 私人测试项目（您的文件名可能不同）。
在重新抛出异常的情况下，可以提供前一个异常作为第三个参数。通过这样做，可以链接异常跟踪。
try {
f('123');
} catch(Throwable $e){
var_dump($e);
}
function f($arg){
if(is_string($arg)){
try {
g($arg);
} catch(UnexpectedValueException $e) {
// Supply a third argument to pass the previous Exception.
throw new RuntimeException('Error in function g()', $e->getCode(), $e);
} catch(Throwable $e) {
// Supply a third argument to pass the previous Exception.
throw new RuntimeException('Unkown Error in function g()', $e->getCode(), $e);
}
}
}
function g($string){
if(strlen($string) < 6){
try {
h($string);
} catch(UnexpectedValueException $e) {
throw new UnexpectedValueException('String is smaller then 6', $e->getCode(), $e);
}
}
return $string;
}
function h($string){
if(strlen($string) < 4){
throw new UnexpectedValueException('String is smaller then 4');
}
return $string;
}
输出：
C:\wamp64\www\julian\index.php:21:
object(RuntimeException)[3]
protected 'message' => string 'Error in function g()' (length=21)
private 'string' (Exception) => string '' (length=0)
protected 'code' => int 0
protected 'file' => string 'C:\wamp64\www\julian\index.php' (length=30)
protected 'line' => int 30
private 'trace' (Exception) =>
array (size=1)
0 =>
array (size=4)
'file' => string 'C:\wamp64\www\julian\index.php' (length=30)
'line' => int 19
'function' => string 'f' (length=1)
'args' =>
array (size=1)
0 => string '123' (length=3)
private 'previous' (Exception) =>
object(UnexpectedValueException)[2]
protected 'message' => string 'String is smaller then 6' (length=24)
private 'string' (Exception) => string '' (length=0)
protected 'code' => int 0
protected 'file' => string 'C:\wamp64\www\julian\index.php' (length=30)
protected 'line' => int 43
private 'trace' (Exception) =>
array (size=2)
0 =>
array (size=4)
'file' => string 'C:\wamp64\www\julian\index.php' (length=30)
'line' => int 27
'function' => string 'g' (length=1)
'args' =>
array (size=1)
0 => string '123' (length=3)
1 =>
array (size=4)
'file' => string 'C:\wamp64\www\julian\index.php' (length=30)
'line' => int 19
'function' => string 'f' (length=1)
'args' =>
array (size=1)
0 => string '123' (length=3)
private 'previous' (Exception) =>
object(UnexpectedValueException)[1]
protected 'message' => string 'String is smaller then 4' (length=24)
private 'string' (Exception) => string '' (length=0)
protected 'code' => int 0
protected 'file' => string 'C:\wamp64\www\julian\index.php' (length=30)
protected 'line' => int 51
private 'trace' (Exception) =>
array (size=3)
0 =>
array (size=4)
'file' => string 'C:\wamp64\www\julian\index.php' (length=30)
'line' => int 41
'function' => string 'h' (length=1)
'args' =>
array (size=1)
0 => string '123' (length=3)
1 =>
array (size=4)
'file' => string 'C:\wamp64\www\julian\index.php' (length=30)
'line' => int 27
'function' => string 'g' (length=1)
'args' =>
array (size=1)
0 => string '123' (length=3)
2 =>
array (size=4)
'file' => string 'C:\wamp64\www\julian\index.php' (length=30)
'line' => int 19
'function' => string 'f' (length=1)
'args' =>
array (size=1)
0 => string '123' (length=3)
private 'previous' (Exception) => null
public 'xdebug_message' => string '<tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> UnexpectedValueException: String is smaller then 4 in C:\wamp64\www\julian\index.php on line <i>51</i></th></tr>
<tr><th align='left' bgcolor='#e9b96e' colspan='5'>Call Stack</th></tr>
<tr><th align='center' bgcolor='#eeeeec'>#</th><th align='left' bgcolor='#eeeeec'>Time</th><th align='left' bgcolor='#eeeeec'>Memory</th><th align='left' bgcolor='#eeeeec'>Function</th><th align='left' bgcolor='#eeeeec'>Location</th></tr>
<tr><td bgcolor='#eeeeec' align='center'>1</td><td bgcolor='#eeeeec' align='center'>0.0034</td><td bgcolor='#eeeeec' align='right'>361152</td><td bgcolor='#eeeeec'>{main}( )</td><td title='C:\wamp64\www\julian\index.php' bgcolor='#eeeeec'>...\index.php<b>:</b>0</td></tr>
<tr><td bgcolor='#eeeeec' align='center'>2</td><td bgcolor='#eeeeec' align='center'>0.0034</td><td bgcolor='#eeeeec' align='right'>361528</td><td bgcolor='#eeeeec'>f( )</td><td title='C'... (length=1645)
public 'xdebug_message' => string '<tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> UnexpectedValueException: String is smaller then 6 in C:\wamp64\www\julian\index.php on line <i>43</i></th></tr>
<tr><th align='left' bgcolor='#e9b96e' colspan='5'>Call Stack</th></tr>
<tr><th align='center' bgcolor='#eeeeec'>#</th><th align='left' bgcolor='#eeeeec'>Time</th><th align='left' bgcolor='#eeeeec'>Memory</th><th align='left' bgcolor='#eeeeec'>Function</th><th align='left' bgcolor='#eeeeec'>Location</th></tr>
<tr><td bgcolor='#eeeeec' align='center'>1</td><td bgcolor='#eeeeec' align='center'>0.0034</td><td bgcolor='#eeeeec' align='right'>361152</td><td bgcolor='#eeeeec'>{main}( )</td><td title='C:\wamp64\www\julian\index.php' bgcolor='#eeeeec'>...\index.php<b>:</b>0</td></tr>
<tr><td bgcolor='#eeeeec' align='center'>2</td><td bgcolor='#eeeeec' align='center'>0.0034</td><td bgcolor='#eeeeec' align='right'>361528</td><td bgcolor='#eeeeec'>f( )</td><td title='C'... (length=1376)
public 'xdebug_message' => string '<tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> RuntimeException: Error in function g() in C:\wamp64\www\julian\index.php on line <i>30</i></th></tr>
<tr><th align='left' bgcolor='#e9b96e' colspan='5'>Call Stack</th></tr>
<tr><th align='center' bgcolor='#eeeeec'>#</th><th align='left' bgcolor='#eeeeec'>Time</th><th align='left' bgcolor='#eeeeec'>Memory</th><th align='left' bgcolor='#eeeeec'>Function</th><th align='left' bgcolor='#eeeeec'>Location</th></tr>
<tr><td bgcolor='#eeeeec' align='center'>1</td><td bgcolor='#eeeeec' align='center'>0.0034</td><td bgcolor='#eeeeec' align='right'>361152</td><td bgcolor='#eeeeec'>{main}( )</td><td title='C:\wamp64\www\julian\index.php' bgcolor='#eeeeec'>...\index.php<b>:</b>0</td></tr>
<tr><td bgcolor='#eeeeec' align='center'>2</td><td bgcolor='#eeeeec' align='center'>0.0034</td><td bgcolor='#eeeeec' align='right'>361528</td><td bgcolor='#eeeeec'>f( )</td><td title='C:\wamp64\ww'... (length=1096)
如果你能摆脱var_dump()一个简单的解决方案是：
try {
...
} catch (Exception $e)
var_dump($e->getTrace());
}