Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Hexadecimal to decimal
<?php hexdec(string $hex_string): int|float
<?php if (preg_match($hexPattern, $value, $matches)) {
$result = [];
$result[0] = strlen($matches[1]) == '1' ? hexdec($matches[1].$matches[1]) : hexdec($matches[1]);
$result[1] = strlen($matches[2]) == '1' ? hexdec($matches[2].$matches[2]) : hexdec($matches[2]);
$result[2] = strlen($matches[3]) == '1' ? hexdec($matches[3].$matches[3]) : hexdec($matches[3]);
$result[3] = 1;
<?php if (preg_match($hexPattern, $value, $matches)) {
$result = [];
$result[0] = strlen($matches[1]) == '1' ? hexdec($matches[1].$matches[1]) : hexdec($matches[1]);
$result[1] = strlen($matches[2]) == '1' ? hexdec($matches[2].$matches[2]) : hexdec($matches[2]);
$result[2] = strlen($matches[3]) == '1' ? hexdec($matches[3].$matches[3]) : hexdec($matches[3]);
$result[3] = 1;
} elseif (preg_match($rgbPattern, $value, $matches)) {
<?php $result = [];
$result[0] = strlen($matches[1]) == '1' ? hexdec($matches[1].$matches[1]) : hexdec($matches[1]);
$result[1] = strlen($matches[2]) == '1' ? hexdec($matches[2].$matches[2]) : hexdec($matches[2]);
$result[2] = strlen($matches[3]) == '1' ? hexdec($matches[3].$matches[3]) : hexdec($matches[3]);
$result[3] = 1;
} elseif (preg_match($rgbPattern, $value, $matches)) {
$result = [];
<?php return false;
}
if (\hexdec($codepoint) > 1114111) {
return false;
}
<?php $l = strlen($match[1]);
if ($l % 2) {
$code = hexdec($match[2]);
if (0xD800 <= $code && 0xDFFF >= $code) {
<?php throw new InvalidArgumentException(sprintf('Invalid "%s" color.', $color));
}
return ($background ? '4' : '3') . $this->convertHexColorToAnsi(hexdec($color));
}
if (isset(self::COLORS[$color])) {