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r/lolphp

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to r/lolphp by jdiez17
8 months ago
(...) transforming into a functional language, like C (...)
to r/lolphp by ealf
8 months ago
Preview thumbnail for I tried to make a Hasse diagram for the PHP '<' operator. Turns out INF is smaller than itself, greater than itself, not equal (==) to itself, but identical to itself (===). image
I tried to make a Hasse diagram for the PHP '<' operator. Turns out INF is smaller than itself, greater than itself, not equal (==) to itself, but identical to itself (===).
to r/lolphp by ealf
8 months ago
PHP can't decode JSON. 𝚓𝚜𝚘𝚗_𝚍𝚎𝚌𝚘𝚍𝚎 takes a flag to choose one of two embedding schemes. One silently turns empty objects into empty lists, the other replaces "" with "_empty_".
to r/lolphp by ealf
8 months ago
The textbook implementation of edit distance takes O(n²) work. The PHP standard library can compute a greedy approximation in Ω(n³).
to r/lolphp by ealf
8 months ago
The case of HTTP response splitting protection in PHP
to r/lolphp by throwaway-o
8 months ago
Fix security bug. Fix introduces much worse security bug.
to r/lolphp by ealf
8 months ago
#define ZEND_NORMALIZE_BOOL(n) ((n) ? (((n)>0) ? 1 : -1) : 0)
in define
to r/lolphp by ealf
8 months ago
Guess what substr('foo', 3) is.
to r/lolphp by ealf
8 months ago
If error reporting is on, htmlspecialchars() will ignore invalid strings silently. If error reporting is *off*, it will throw an error. This is not a bug, it's an intentional security feature.
to r/lolphp by ealf
8 months ago
Method names are case insensitive, unless you're calling a forwarded method on a FilterIterator, in which case you must include at least one uppercase letter in the method name for it to work. Even if the name of the actual method you're calling does not have one.
to r/lolphp by ealf
8 months ago
To get the HTTP request headers, you call getallheaders(). To get the response headers, you call get_headers(). Or vice-versa.
to r/lolphp by ealf
8 months ago
"hexdec() converts a hexadecimal string to a decimal number"
to r/lolphp by ealf
8 months ago
GTO: $a = new stdclass(); unset($a->foo->bar->baz); var_dump($a);
to r/lolphp by ealf
8 months ago
/* Guess */ for($i=5; $i-->0; ) { switch($i) { case 3: continue; case true: echo 'x'; } echo $i; }
to r/lolphp by ealf
8 months ago
Guess the output: echo(1) and print(2) and die(3);
to r/lolphp by ealf
8 months ago
class X { function f($v) { var_dump($$v); } } $x = new X(); $x->f('this');
to r/lolphp by ealf
8 months ago
PHP Fatal error: func_get_args(): Can't be used as a function parameter
to r/lolphp by ealf
8 months ago
The return value of uniqid() is the current time in milliseconds, as a hexadecimal string. How does PHP guarantee that the value is 'unique'?
to r/lolphp by ealf
8 months ago
json_decode('hello world') === 'hello world'
to r/lolphp by ealf
8 months ago
Which is true, (++$a == $a) or ($a == ++$a)?
to r/lolphp by ealf
8 months ago
curl_setopt(CURLOPT_POSTFIELDS, array('message' => $m)) reads a file from the local file system if $m starts with '@'
to r/lolphp by ealf
8 months ago
I nominate this function for the Orthogonal API Design Award.
to r/lolphp by ealf
8 months ago
Segfault the interpreter with a typo
to r/lolphp by ealf
8 months ago
preg_match('/foo/', 'foo', $m=array(42)); var_dump($m);
to r/lolphp by ealf
8 months ago
html_entity_decode('&#38; / &#39; / &#40;') == '& / &#39; / ('
in 38;