驗證網址php.net安全性

PHP: Strings - Manual - PHP: Hypertext Preprocessor

Escaped characters Sequence Meaning \n linefeed (LF or 0x0A (10) in ASCII) \r carriage return (CR or 0x0D (13) in ASCII) \t horizontal tab (HT or 0x09 (9) in ASCII) \v vertical tab (VT or 0x0B (11) in ASCII) (since PHP 5.2.5) \e escape...

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