Some useful snippets for the Hypertext Preprocessor or better knows as PHP.
Some useful snippets for the Hypertext Preprocessor or better knows as PHP.
Older than
Testing if a date is older than n days
<?php
date_default_timezone_set('Europe/Rome');
if(strtotime('2014-11-15 17:14:40')<strtotime('-30 days')){
echo "I am older than 30 days";
} else {
echo "I am too young, less than 30 days";
}
?>
Command Line Argument
A way to read the command line argument
<?php // testarg.php
// php testarg days=180 parse_str(implode('&', array_slice($argv, 1)), $_GET); echo $_GET['days'] ; ?>
Elapsed Time
Calculate the elapsed time between two date time
<?php
date_default_timezone_set('Europe/Rome');
// Elapsed time - START
$time_start = microtime(true);
for ($x = 0; $x <= 10000000; $x++) {
}
sleep(1.5);
// Elapsed time - END
$timelapsed=elapsed($time_start);
echo "Elapsed Time: ".$timelapsed;
return "";
/** *******************************************************************************
Calculate a precise time difference.
@param string $start result of microtime()
@param string $end result of microtime(); if NULL/FALSE/0/'' then it's now
@return flat difference in seconds, calculated with minimum precision loss
*/
function elapsed( $start, $end=NULL ) {
if( !$end ) {
$end= microtime();
}
list($start_usec, $start_sec) = explode(" ", $start);
list($end_usec, $end_sec) = explode(" ", $end);
$diff_sec= intval($end_sec) - intval($start_sec);
$diff_usec= floatval($end_usec) - floatval($start_usec);
return floatval( $diff_sec ) + $diff_usec;
}
?>
Get Image Size
Get image height, width and attribute
list($width, $height, $type, $attr) = getimagesize($URLImage); echo 'data-size="'.$width."x".$height.'"';
New Line for command line and web
New Line for command line and web
// newline for CLI and WEB
public function newline() {
if (PHP_SAPI === 'cli'){
return PHP_EOL;
} else{
return "<br/>";
}
}
// or a simpler way simple
$br = PHP_SAPI === 'cli' ? "\n" : "<br/>";
PHP Script is running on Linux or Windows?
PHP Script is running on Linux or Windows?
if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
echo 'This is a server using Windows!';
} else {
echo 'This is a server not using Windows!';
}
Force the browser to write text like the CLI session
Force the browser to write text like the CLI session
header("Content-type: text/plain");
Verify if a class already available
Verify if a class already available
if (!class_exists('ArtResponsiveMenuHelper')) {
class ArtResponsiveMenuHelper {
...
}
Retuning multiple parameters
Retuning multiple parameters
// Returning an array
function wtf($blahblah = true) {
$var1 = "ONe";
$var2 = "tWo";
if($blahblah === true) {
return $var2;
}
if($blahblah == "both") {
return array($var1, $var2);
}
return $var1;
}
echo wtf("both")[0]
//would echo: ONe
echo wtf("both")[1]
//would echo: tWo
list($first, $second) = wtf("both")
// value of $first would be $var1, value of $second would be $var2
HEREDOC to assign string
Assigning HTML contents to PHP variables
$str = <<<HTML
<div id="div1">
<div id="div10"></div>
<div id="div11"></div>
<div id="div12"></div>
</div>
HTML;
more... php manual heredoc
New Line based on CLI or WEB
New Line based on CLI or WEB
// 1st way - short function br()
function br() { return (PHP_SAPI === 'cli' ? "\n" : "<br />"); }
// 2nd way - var
$br = PHP_SAPI === 'cli' ? "\n" : "<br/>";
To Be continued
To Be Continued...
Stay tuned, I will add more snippets soon...
