phptrace

How print every line of a php script as its being executed?

How to print every line of a php script as it's being executed?

For example in Python you can do

$ cat test.py 
import time
print('hello')
time.sleep(3)
print('goodbye')

$ python -m trace -t test.py 
 --- modulename: test, funcname: <module>
test.py(1): import time
test.py(2): print('hello')
hello
test.py(3): time.sleep(3)
test.py(4): print('goodbye')
goodbye

Is there a PHP equivalent?

Solution

  • PHP doesn't have trace, you can get around that with "ticks".
    This is an example of what you can do:

    <?php

// You need to add this code
declare(ticks=1);
register_tick_function(function() {
    $backTrack  = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 1)[0];
    $line = trim(file($backTrack['file'])[$backTrack['line'] - 1] ?? '');
    echo "$line\n";
});


// Your code goes here
echo "hello\n";
sleep(3);
echo "goodbye\n";

    It will print out this:

    hello
echo "hello\n";
sleep(3);
goodbye
echo "goodbye\n";

    You can read more about ticks here: