Question

是否有一种简单的方法（在每一行之后没有坚持写入）让PHP将每条执行的行写入日志？

Answer 1

虽然我同意@gnif，因为调试器最适合它，我仍然会回答你的问题，因为它有可能（不完美，但可能）。

考虑您有以下代码：

<强> sometest.php

<?php

declare(ticks=1);

include_once 'debug.php';

$a = 'foo';
$b = 'bar';
$c = $a . $b;
$d = $e = "hello";
strlen($d);

include 'somefile.php';

<强> somefile.php

<?php

$hello = 'world';

因此，sometest.php包含以下文件（debug.php）：

<?php

register_tick_function(function(){
    $backtrace = debug_backtrace();
    $line = $backtrace[0]['line'] - 1;
    $file = $backtrace[0]['file'];

    if ($file == __FILE__) return;

    static $fp, $cur, $buf;
    if (!isset($fp[$file])) {
        $fp[$file] = fopen($file, 'r');
        $cur[$file] = 0;
    }

    if (isset($buf[$file][$line])) {
        $code = $buf[$file][$line];
    } else {
        do {
            $code = fgets($fp[$file]);
            $buf[$file][$cur[$file]] = $code;
        } while (++$cur[$file] <= $line);
    }

    $line++;
    echo "$code called in $file on line $line\n";
});

registers a tick function，还有declares the tick interval。它将跟踪使用回溯调用的文件/行。

现在，如果我们执行sometest.php，我们会得到：

include_once 'debug.php';
 called in sometest.php on line 5
$a = 'foo';
 called in sometest.php on line 7
$b = 'bar';
 called in sometest.php on line 8
$c = $a . $b;
 called in sometest.php on line 9
$d = $e = "hello";
 called in sometest.php on line 10
strlen($d);
 called in sometest.php on line 11
$hello = 'world';
 called in somefile.php on line 3
include 'somefile.php';
 called in sometest.php on line 13

您可以看到somefile.php包含在最后，即使它在$hello = 'world'之前调用。这是因为当包含完成该行时，将调用tick函数，而不是在它开始时调用。

此外，在函数/方法声明中调用tick函数：

<?php

function foo() {
    return 'bar';
}

foo();

会给你类似的东西：

}
 called in somefunc.php on line 5   # this is the function declaration
foo();
 called in somefunc.php on line 7   # this is the function call

注意：使用ticks时要小心，因为在5.3.0之前，线程Web服务器不支持它。

记录所有执行的行

1 个答案: