Example code for string and multi-input conversion functions in PHP

Conversion functions

/** * [string converted to (2,8,16) ASCII code] * @param string $str [Pending String] * @param boolean $encode [string converted to ascii| ASCII converted to string] * @param string $intType [2,8,16] * @return string byte_str [processing result] * @author Alexander */function Strtoas    CII ($str, $encode =true, $intType = "2") {if ($encode = = True) {$byte _array = Str_split ($STR);      foreach ($byte _array as & $value) {$value = ord ($value);          Switch ($intType) {case: $value = sprintf ("%02x", $value);        Break          Case 8: $value = sprintf ("%03o", $value);        Break          Default: $value = sprintf ("%08b", $value);      Break    }} unset ($value);  $byte _str = Implode (", $byte _array);    } else{$chunk _size = $intType = = = 2: ($intType = = 8? 3:8);    $byte _array = Chunk_split ($str, $chunk _size);    $byte _array = Array_filter (Explode ("\ r \ n", $byte _array)); foreach ($byte _array as & $value) {$fun _name = $intType = = 16? ' Hexdec ': ($intType = = 8? ' Octdec ': ' Bindec ');      $value = $fun _name ($value);    $value = Chr ($value);    } unset ($value);  $byte _str = Implode (", $byte _array); } return $byte _str;}

Multi-binary in PHP

PHP integer values can be expressed in decimal, hexadecimal, octal, or binary notation, preceded by an optional symbol (-or +).

Binary: [+-]?0b[01]+

Octal: [+-]?0[1-7]+

Decimal: [+-]? [1-9] [0-9]*|0

Hex: [+-]? [XX] [0-9a-fa-f]+

The multi-input conversion function:

The above is a small series for everyone to bring about the string in PHP and the multi-conversion function instance code all content, I hope that you support topic.alibabacloud.com~