Online PHP editor | rfc for CEmqV

@ 2017-07-21T16:12:07Z

<?php

function closure_to_str($func)
{
    $refl = new \ReflectionFunction($func); // get reflection object
    $path = $refl->getFileName();  // absolute path of php file
    $begn = $refl->getStartLine(); // have to `-1` for array index
    $endn = $refl->getEndLine();
    $dlim = "\n"; // or PHP_EOL
    $list = explode($dlim, file_get_contents($path));         // lines of php-file source
    $list = array_slice($list, ($begn-1), ($endn-($begn-1))); // lines of closure definition
    $last = (count($list)-1); // last line number

    if((substr_count($list[0],'function')>1)|| (substr_count($list[0],'{')>1) || (substr_count($list[$last],'}')>1))
    { throw new \Exception("Too complex context definition in: `$path`. Check lines: $begn & $endn."); }

    $list[0] = ('function'.explode('function',$list[0])[1]);
    $list[$last] = (explode('}',$list[$last])[0].'}');

    return implode($list,$dlim);
}

$dog2 = ['bark'=>function($foo = '{'){}];

echo closure_to_str($dog2['bark'])."\n\n";

Output for git.master_jit, git.master, rfc.property-hooks: Fatal error: Uncaught Exception: Too complex context definition in: `/in/CEmqV`. Check lines: 23 & 23. in /in/CEmqV:15 Stack trace: #0 /in/CEmqV(25): closure_to_str(Object(Closure)) #1 {main} thrown in /in/CEmqV on line 15
Process exited with code 255.

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2020-03-21 RFC: Is_Literal - declined
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2018-06-15 Typed Properties v2 - implemented in PHP 7.4
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