ksort() expects parameter 1 to be array, null given in OTL.php

[farahalrabee2]

Hello all,

i have this code in my model : ` $pdf = new Pdf([ 'tempPath' => Yii::getAlias('@backend') . '/web/custom/temp/dir/path', 'mode' => '', 'filename' => $filename, 'format' => Pdf::FORMAT_A4, 'destination' => Pdf::DEST_BROWSER, 'content' => $content, 'cssInline' => 'body{font-family:Cairo;}', 'defaultFont'=>"Cairo" ]); $defaultConfig = (new \Mpdf\Config\ConfigVariables())->getDefaults(); $fontDirs = $defaultConfig['fontDir'];

    $defaultFontConfig = (new \Mpdf\Config\FontVariables())->getDefaults();
    $fontData = $defaultFontConfig['fontdata'];

    $pdf->options = array_merge($pdf->options , [
        'fontDir' => array_merge($fontDirs, [ Yii::$app->basePath.'/../backend/web/font/ar/']),  // make sure you refer the right physical path
        'fontdata' => array_merge($fontData, [
            'cairo' => [
                'R' => 'cairo-v4-arabic_latin-regular.ttf',
                'I' => 'cairo-v4-arabic_latin-700.ttf',
                'useOTL' => 0xFF,
                'useKashida' => 75,
            ]
        ]),
        'default_font' => 'cairo',
    ]);`

Everything is going well but when i try to generate the PDF i faced this PHP warning : ksort() expects parameter 1 to be array, null given. in the OTL.php file during implementing the _getClassDefinitionTable function , $GlyphByClass returns null while it should at least return an empty array : private function _getClassDefinitionTable($offset) { if (isset($this->LuDataCache[$this->fontkey][$offset])) { $GlyphByClass = $this->LuDataCache[$this->fontkey][$offset]; } else { $this->seek($offset); $ClassFormat = $this->read_ushort(); $GlyphClass = []; // $GlyphByClass = array(0=>array()); // NB This forces an index[0] if ($ClassFormat == 1) { $StartGlyph = $this->read_ushort(); $GlyphCount = $this->read_ushort(); for ($i = 0; $i < $GlyphCount; $i++) { $GlyphClass[$i]['startGlyphID'] = $StartGlyph + $i; $GlyphClass[$i]['endGlyphID'] = $StartGlyph + $i; $GlyphClass[$i]['class'] = $this->read_ushort(); for ($g = $GlyphClass[$i]['startGlyphID']; $g <= $GlyphClass[$i]['endGlyphID']; $g++) { $GlyphByClass[$GlyphClass[$i]['class']][] = $this->glyphToChar($g); } } } elseif ($ClassFormat == 2) { $tableCount = $this->read_ushort(); for ($i = 0; $i < $tableCount; $i++) { $GlyphClass[$i]['startGlyphID'] = $this->read_ushort(); $GlyphClass[$i]['endGlyphID'] = $this->read_ushort(); $GlyphClass[$i]['class'] = $this->read_ushort(); for ($g = $GlyphClass[$i]['startGlyphID']; $g <= $GlyphClass[$i]['endGlyphID']; $g++) { $GlyphByClass[$GlyphClass[$i]['class']][] = $this->glyphToChar($g); } } } ksort($GlyphByClass); $this->LuDataCache[$this->fontkey][$offset] = $GlyphByClass; } return $GlyphByClass; }

i solved the problem by setting $GlyphByClass = []; in OTL.php.

anyone can help ?

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