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Notes on php character escaping

WBOYOriginal: 2016-07-25 09:05:54964browse

$str = "ffff -----------------------
9 102 102 102 102 0 102 102 102 102
2. Examples of replacing special characters

$str = "ffff ----------------------- 8 102 102 102 102 102 102 102 102

Three, octal ascii code example:

//Note that a string that conforms to the regular pattern [0-7]{1,3} represents an octal ASCII code.
$str = " ----------------------- 11 0 1 2 3 7 8 9 0 56 92 56
4. Example of hexadecimal ascii code:

$str = "x0x1x2x3x7x8x9x10x11xff";

echo(strlen($str)); echo("n"); for($i=0;$iecho("n");

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