PHP的语法糖是一种简化代码和提高可读性的特性,以下是一些常见的PHP语法糖:空合并运算符(Null Coalescing Operator):使用??来简化判断变量是否存在且非空的操作。例如:$name = $_GET['name'] ?? 'Guest';合并赋值运算符(Concatenation Assignment Operator):使用.=来合并并赋值字符串。例如:$message .= 'Hello...
'value'; In the long run, this code could be a bit difficult to maintain. So, aiming to help developers to write more intuitive code, this RFC proposes the introduction of the null coalescing assignment operator (??=). So, instead of writing the previous code, we could write the followi...
非空赋值运算符(Null Coalescing Assignment Operator) // 下面几行代码完成相同功能 $this->request->data['comments']['user_id'] = $this->request->data['comments']['user_id'] ?? 'value'; // 使用非空赋值运算符,替代上面的方法 $this->request->data['comments']['user_id'] ??= 'value'...
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OperatorNameExampleResultTry it ?: Ternary $x = expr1 ? expr2 : expr3 Returns the value of $x.The value of $x is expr2 if expr1 = TRUE.The value of $x is expr3 if expr1 = FALSE Try it » ?? Null coalescing $x = expr1 ?? expr2 Returns the value of $x.The value of...
非空赋值运算符(Null Coalescing Assignment Operator) // 下面几行代码完成相同功能 $this->request->data['comments']['user_id'] = $this->request->data['comments']['user_id'] ?? 'value'; // 使用非空赋值运算符,替代上面的方法 $this->request->data['comments']['user_id'] ??= 'value'...
Use the null coalescing operator to provide a fallback when a property is null: $paymentDate = $invoice->paymentDate ?? Date::now(); It also works nested: $input = $data['few']['levels']['deep'] ?? 'foo'; 7.4 You can use the null coalescing assignment operator to write the ...
How to use the conditional operator How to use the null coalescing operators How to code switch statements How to code match expressions How to use a switch statement in the controller How to code the iteration structures How to code while loops ...
Conditional Assignment Operators These Operators are used to assign the values in a variable based on a condition. Examples can be the Ternary Operator (?) and Null coalescing operator (??). Example php <!DOCTYPE html><?php $ninja1 = 10; $ninja2 = 5; // Arithmetic operators echo "...
<break lines="1" section="null_coalesce_assign"/><blurb fontsize="1em" align="left">Null Coalescing Assignment Operator</blurb><example fontsize="1em" result='0' title="" type=""><![CDATA[<?php$this->config['value'] = $this->config['value'] ?? 'default_value';...