@ 2015-04-15T13:53:03Z <?php
$kw = " asdsdfsdf \n as ";
$pattern = '/^((?![[:cntrl:]' . preg_quote(',!@%^*()={};~`<>?\|', '/') . ']).)*$/u';
var_dump($pattern);
var_export($pattern); echo PHP_EOL;
var_dump(preg_match($pattern, $kw));
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Output for 4.3.10 - 4.3.11 , 4.4.0 - 4.4.9 , 5.0.2 - 5.0.5 , 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 , 5.3.0 - 5.3.29 , 5.4.0 - 5.4.45 , 5.5.24 - 5.5.35 , 5.6.7 - 5.6.28 , 7.0.0 - 7.0.20 , 7.1.0 - 7.1.33 , 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 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 string(56) "/^((?![[:cntrl:],\!@%\^\*\(\)\=\{\};~`\<\>\?\\\|]).)*$/u"
'/^((?![[:cntrl:],\\!@%\\^\\*\\(\\)\\=\\{\\};~`\\<\\>\\?\\\\\\|]).)*$/u'
int(0)
Output for 4.3.0 - 4.3.9 , 5.0.0 - 5.0.1 string(56) "/^((?![[:cntrl:],\!@%\^\*\(\)\=\{\};~`\<\>\?\\\|]).)*$/u"
'/^((?![[:cntrl:],\\!@%\\^\\*\\(\\)\\=\\{\\};~`\\<\\>\\?\\\\\\|]).)*$/u'
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/mAgu2 on line 7
PHP_EOLint(0)
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259.78 ms | 402 KiB | 359 Q