How To Calculate CSS Height On The Fly Using Calc

Author: erics, March 25th, 2020

I needed to use an iframe between a pre-defined header and footer that would auto-fill the full height on any size screen. On a desktop, the combined height of the header + footer was 223px and for mobile was 157px, so below find the CSS example: calc(100vh – 223px) – for desktop calc(100vh – 157px) […]

Categories: How-To's, Technology Tags: Auto, cacl(), Calc, CSS, Fly, Function, height, howto, html, On The Fly, tips | No comments

How To Disable the Brightness Keys in MacOSX

Author: erics, July 26th, 2012

Download and install the prefpane FunctionFlip. Then set the F1 and F2 keys to default to having Fn pressed, which effectively disables the “Change Brightness” feature… http://kevingessner.com/software/functionflip/

Categories: How-To's, Technology Tags: apple, Bright, Brightness, Brightness Key, Disable, Flip, Function, Function Flip, FunctionFlip, howto, Keys, macosx, Pane, Preference, Preference Pane, System Preferences, tips | No comments

How To Pass A Reference To An Existing Object From One Class To Another In PHP

Author: erics, February 2nd, 2012

Inside class “yourClassA” calling “yourClassB”:

class yourClassA {
        $classObject  = new yourClassB;
        $classObject->setClass($this);
}

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class yourClassA {

$classObject = new yourClassB;

$classObject->setClass($this);

}

Inside class “yourClassB” getting the call from “yourClassA”:

class yourClassB {

    public function setClass($object = NULL) {
        if(is_object($object) and $object instanceof yourClassA) {
            $this->RefToClassA = $object;
            $this->yourVar  = $RefToClassA->otherVar; // etc, etc, etc...
        }
    }

}

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class yourClassB {

public function setClass($object = NULL) {

if(is_object($object) and $object instanceof yourClassA) {

$this->RefToClassA = $object;

$this->yourVar = $RefToClassA->otherVar; // etc, etc, etc...

}

Categories: How-To's, Technology Tags: Class, Classes, Function, Object, Object Oriented, OO, php, Reference, Var, Variable | No comments

How To Call Functions Within Classes Dynamically In PHP

Author: erics, January 19th, 2012

    public function valid($function = '') {
        $methodVariable = array($this, $function);
        if (is_callable($methodVariable)) {
            return $this->{$function}();
        } else {
            $this->msgs[]   = "Validation method $function is unavailable!";
            return 0;
        }   
    }

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public function valid($function = '') {

$methodVariable = array($this, $function);

if (is_callable($methodVariable)) {

return $this->{$function}();

} else {

$this->msgs[] = "Validation method $function is unavailable!";

return 0;

}

Categories: How-To's, Technology Tags: Dynamic functions, Function, howto, php, tips, Valid, Validation, Variable, Variable function | No comments

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How To Calculate CSS Height On The Fly Using Calc

How To Disable the Brightness Keys in MacOSX

How To Pass A Reference To An Existing Object From One Class To Another In PHP

How To Call Functions Within Classes Dynamically In PHP

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