php Hex RGB颜色值互换的使用

复制代码 代码如下:

<?php

echo implode ( &布布花#8220;,”, hextorgb ( “#f7f7da” ) ) . “<br/>”;

echo rgbtohex ( “rgb(247,247,218)” )?>

<?php

functio学位怎么填n hextorgb($colour) {
if ($colour [0] == ‘#’) {
$colour = substr ( $colour, 1 );
}
if (strlen ( $colour ) == 6) {
list ( $r, $g, $b ) = array (
$colour [0] . $colour [1],
$colour [2] . $colour [3],
$colour [4] . $colour [5]
);
} elif (strlen ( $colour ) == 3) {
list ( $r, $g, $b )有关夏天的诗句 = array影立驰 (
$colour [0] . $colour [0],
$colour [1] . $colour [1],
$colour [2] . $colour [2]
);
} el {
return fal;
}
$r = hexdec ( $r );
$g = hexdec ( $g );
$b = hexdec ( $b );
return array (
‘red’ => $r,
‘green’ => $g,
‘blue’ => $b
);
}
function rgbtohex($rgb) {
$regexp = “/^rgb\(([0-9]{0,3})\,\s*([0-9]{0,3})\,\s*([0-9]{0,3})\)/”;
$re = preg_match ( $regexp, $rgb, $match );
$re = array_shift ( $match );
$hexcolor = “#”;
$hex = array (
‘0’,
‘1’,
‘2’,
‘3’,
‘4’,
‘5’,
‘6’,
‘7’,
‘8’,
‘9’,
‘a’,
‘b’,
‘c’,
&我是猴子#8216;d’,
‘e’,
‘f’
);
for($i = 0; $i < 3; $i ++) {
$r = null;
$c = $match [$i];
$hexar = array ();

while ( $c > 16 ) {
$r = $c % 16;
$c = ($c / 16) >> 0;
array_push ( $hexar, $hex [$r] );
}
array_push ( $hexar, $hex [$c] );

$ret = array_rever ( $hexar );
$item = implode ( ”, $ret );
$item = str_pad ( $item, 2, ‘0’, str_pad_left );
$hexcolor .= $item;
}
return $hexcolor;
}
?>