PHP convert color to its inverse color method, PHP convert color for its _php tutorial

PHP converts color to its inverse color method, PHP converts the color to its

The example in this article describes how PHP converts color to its inverse color. Share to everyone for your reference. The specific analysis is as follows:

This PHP code can turn a color into the opposite color code, such as: White Turns black, blue turns yellow

function Color_inverse ($color) {  $color = str_replace (' # ', ' ', $color);  if (strlen ($color)! = 6) {return ' 000000 ';}  $rgb = ";  for ($x =0; $x <3; $x + +) {    $c = 255-hexdec (substr ($color, (* * $x), 2));    $c = ($c < 0)? 0:dechex ($c);    $rgb. = (strlen ($c) < 2)? ' 0 '. $c: $c;  }  Return ' # '. $rgb;} Use example://Black Whiteprint color_inverse (' #000000 '); --Returns #ffffff//Blue Yellowprint color_inverse (' #0000FF ');/--#FFFF00

I hope this article is helpful to everyone's PHP programming.

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