@ 2013-11-04T23:06:47Z <?php
$r1 = '/(?!<r)rn/';
$r2 = '(r(?:r(*SKIP)(*FAIL)|)n)';
var_dump(preg_match($r1, "rrn", $m1), $m1);
var_dump(preg_match($r2, "rrn", $m2), $m2);
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Output for 4.4.9 , 5.2.5 - 5.2.17 , 5.3.0 - 5.3.29 , 5.4.0 - 5.4.45 , 5.5.0 - 5.5.38 , 5.6.0 - 5.6.28 , 7.0.0 - 7.0.20 , 7.1.0 - 7.1.25 , 7.2.0 - 7.2.33 , 7.3.0 - 7.3.33 , 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.27 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 int(1)
array(1) {
[0]=>
string(2) "rn"
}
int(0)
array(0) {
}
Output for 5.2.0 - 5.2.4 int(1)
array(1) {
[0]=>
string(2) "rn"
}
Warning: preg_match(): Compilation failed: nothing to repeat at offset 6 in /in/DWLbU on line 7
bool(false)
NULL
Output for 4.3.11 , 4.4.0 - 4.4.8 , 5.0.0 - 5.0.5 , 5.1.0 - 5.1.6 int(1)
array(1) {
[0]=>
string(2) "rn"
}
Warning: preg_match(): Compilation failed: nothing to repeat at offset 6 in /in/DWLbU on line 7
bool(false)
array(0) {
}
Output for 4.3.0 - 4.3.10 int(1)
array(1) {
[0]=>
string(2) "rn"
}
Warning: Compilation failed: nothing to repeat at offset 6 in /in/DWLbU on line 7
bool(false)
array(0) {
}
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252.31 ms | 401 KiB | 369 Q