IF ... ELSE $text = "There ". ($total==1 ? "is 1 item" : "are ".($total == 0 ? "no items" : "$total items") ); //Compared to: if($total==0) { $text = "There are no items"; } else if($total==1) { $text = "There is 1 item"; } else if($total > 0) ...
简化的if语句(Ternary Operator):使用? :来简化if-else语句。例如:$age = ($isAdult ? 'Adult' : 'Child');可变变量(Variable variables):使用$$来动态创建变量。例如:$name = 'age'; $$name = 20;数组简写(Array Syntax Shorthand):使用[]来代替array()。例如:$arr = ['apple', 'banana', 'orang...
phpif($argc!=2){echo"Usage: php hello.php [name].\n";exit(1);}$name=$argv[1];echo"Hello,$name\n"; PHP 会在脚本运行时根据参数设置两个特殊的变量,$argc是一个整数,表示参数个数,$argv是一个数组变量,包含每个参数的值, 它的第一个元素一直是 PHP 脚本的名称,如本例中为hello.php。 命令...
setcookie('lang', $lang); //it's stored in a cookie so it can be reused } elseif (isset($_COOKIE['lang']) && valid($_COOKIE['lang'])) { // if the cookie is present instead, let's just keep it $lang = $_COOKIE['lang']; //you should sanitize this! } elseif (isset($...
PHP One Line If Statement – Single Line If – Shorthand If When writing PHP, I don’t know why but I keep having to research thePHP one line if statementagain and again. I just can’t seem to remember it. Totally bizarre. There are many names for this construct. Theone liner ifis...
//if shorthand notation, need some string manipulations $rgbArray['red'] = hexdec(str_repeat(substr($hexStr, 0, 1), 2)); $rgbArray['green'] = hexdec(str_repeat(substr($hexStr, 1, 1), 2)); $rgbArray['blue'] = hexdec(str_repeat(substr($hexStr, 2, 1), 2)); } else { ...
The ternary operator in PHP is a concise way to assign a value to a variable based on a condition. It's a shorthand for a simple if-else statement.Syntax:condition ? expression1 : expression2Breakdown:Condition: This is the expression that is evaluated to either true or false. Expression1...
shorthand.php <?php $words = [ "Prague", "111978", "terry2", "mitt##" ]; $pattern = "/\w{6}/"; foreach ($words as $word) { if (preg_match($pattern, $word)) { echo "$word matches the pattern\n"; } else { echo "$word does not match the pattern\n"; ...
elseif(round($difference/3600, 2) >= 3) { return "Just a few hours ago.."; } elseif(round($difference/3600, 2) >= 8) { return "About half a day ago..."; } elseif(round($difference/3600, 2) < 1) { return "Less than an hour ago..."; } ...
The difference between 'elseif' and 'else if' in PHP Built-in password hashing and verification in PHP Reasons to use Composition over Inheritance in PHP Better error handling in core PHP functions using Safe PHP Late static binding in PHP - What, How & When A deep dive into Gener...