Created
July 14, 2019 12:57
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Convert hexadecimal values to decimal values
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function convert_hex2dec($hex) { | |
// Remove hashmark, if present. | |
if (substr($hex, 0, 1) === '#') { | |
$hex = substr($hex, 1); | |
} | |
// Max of 8 characters. | |
if (strlen($hex) > 8) { | |
$hex = substr($hex, 0, 8); | |
} | |
// Count the characters. | |
$length = strlen($hex); | |
// Get hex as an array. | |
$chars = str_split($hex); | |
// Handle 3-digit hexes; convert to 6-digit counterparts. | |
if ($length === 3) { | |
$hex = $chars[0].$chars[0].$chars[1].$chars[1].$chars[2].$chars[2]; | |
} | |
// Handle non-6-digit hexes; convert to 6-digit by padding with zero(s). | |
if ($length !== 6) { | |
$hex = str_pad($hex, 6, '0'); | |
$chars = str_split($hex); | |
} | |
// Handle (or append) alpha value. | |
if (count($chars) === 6) { | |
$chars[] = 'f'; | |
$chars[] = 'f'; | |
} else if (count($chars) === 7) { | |
$chars[] = $chars[6]; | |
} | |
// Initialization. | |
$values = []; | |
// RGB values. | |
$values['rgb_r'] = hexdec($chars[0].$chars[1]); | |
$values['rgb_g'] = hexdec($chars[2].$chars[3]); | |
$values['rgb_b'] = hexdec($chars[4].$chars[5]); | |
$values['rgb_a'] = hexdec($chars[6].$chars[7]); | |
// HEX values. | |
$values['hex_r'] = $chars[0].$chars[1]; | |
$values['hex_g'] = $chars[2].$chars[3]; | |
$values['hex_b'] = $chars[4].$chars[5]; | |
$values['hex_a'] = $chars[6].$chars[7]; | |
// Assembled hex value. | |
$values['hex'] = $values['hex_r'].$values['hex_g'].$values['hex_b']; | |
// Return the values. | |
return $values; | |
} | |
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