3 // FPDI - Version 1.5.4
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5 // Copyright 2004-2015 Setasign - Jan Slabon
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7 // Licensed under the Apache License, Version 2.0 (the "License");
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8 // you may not use this file except in compliance with the License.
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9 // You may obtain a copy of the License at
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11 // http://www.apache.org/licenses/LICENSE-2.0
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13 // Unless required by applicable law or agreed to in writing, software
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14 // distributed under the License is distributed on an "AS IS" BASIS,
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15 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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16 // See the License for the specific language governing permissions and
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17 // limitations under the License.
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21 * Class FilterASCIIHexDecode
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23 class FilterASCIIHexDecode
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26 * Converts an ASCII hexadecimal encoded string into it's binary representation.
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28 * @param string $data The input string
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31 public function decode($data)
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33 $data = preg_replace('/[^0-9A-Fa-f]/', '', rtrim($data, '>'));
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34 if ((strlen($data) % 2) == 1) {
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38 return pack('H*', $data);
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42 * Converts a string into ASCII hexadecimal representation.
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44 * @param string $data The input string
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45 * @param boolean $leaveEOD
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48 public function encode($data, $leaveEOD = false)
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50 return current(unpack('H*', $data)) . ($leaveEOD ? '' : '>');
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