<?php
   $json ='{"id":1,"name":"foo","interest":["wordpress","php"]}';
   $obj=json_decode($json);
   echo $obj->interest[1]; //prints php
?>

<?php
$array = array(
    'fruit1' => 'apple',
    'fruit2' => 'orange',
    'fruit3' => 'grape',
    'fruit4' => 'apple',
    'fruit5' => 'apple');

// this cycle echoes all associative array
// key where value equals "apple"
while ($fruit_name = current($array)) {
    if ($fruit_name == 'apple') {
        echo key($array), "\n";
    }
    next($array);
}
?>

<?php
function getRandomId($min = NULL, $max = NULL) {
    if (is_numeric($min) && is_numeric($max)) {
        return mt_rand($min, $max);
    }
    else {
        return mt_rand();
    }
}
?>

<?php
$listOfFiles = glob("*.{jpg,png,gif,tiff,jpeg}", GLOB_BRACE);

echo 'images = []; ';

for($x = 0; $x <= count($listOfFiles)-1; $x++) {
	echo "images[" . $x . "] =" . '"' . $listOfFiles[$x] . '"' . "; ";
}
?>

<?php
function getFileExtension($file) {
    return end(explode(".", $file));
}
?>

<?php
$im = imagecreatefrompng('example.png');
$size = min(imagesx($im), imagesy($im));
$im2 = imagecrop($im, ['x' => 0, 'y' => 0, 'width' => $size, 'height' => $size]);
if ($im2 !== FALSE) {
    imagepng($im2, 'example-cropped.png');
    imagedestroy($im2);
}
imagedestroy($im);
?>