Magical PHP operators: The secret to more efficient code

<p>Magical PHP operators make code writing more efficient! PHP editor Strawberry will help you unlock the secret to improving code efficiency. Operators are indispensable tools in programming. Being proficient in the usage of various operators can make the code more concise and readable, and improve development efficiency. This article will introduce in detail the commonly used operators in PHP and their magical uses, helping developers better use operators to simplify code and improve development efficiency. </p> <p>The ternary operator is a powerful <strong class="keylink"> tool</strong> that allows <strong class="keylink">developers</strong> to choose between two expressions via conditional statements. The syntax is as follows: </p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">$result = (condition) ? expr1 : expr2;</pre><div class="contentsignin">Copy after login</div></div> <p>For example:</p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">$age = 18; $message = ($age &gt;= 18) ? &quot;成年&quot; : &quot;未成年&quot;;</pre><div class="contentsignin">Copy after login</div></div> <p>This code block uses the ternary operator to assign the message to the variable <code>$message</code> based on age conditions, thus avoiding the use of <code>if-else</code> statements. </p> <p><strong>2. null coalescing operator (??)</strong></p> <p>The null coalescing operator is a postfix operator that allows developers to specify a default value for the null value of a variable or expression. The syntax is as follows: </p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">$result = $variable ?? default_value;</pre><div class="contentsignin">Copy after login</div></div> <p>For example:</p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">$name = $_GET[&quot;name&quot;] ?? &quot;John Doe&quot;;</pre><div class="contentsignin">Copy after login</div></div> <p>In this example, if <code>$_GET[&quot;name&quot;]</code> is null, then <code>$name</code> will be assigned the value "John Doe". </p> <p><strong>3. Assignment operator shortcut</strong></p> <p><strong class="keylink">PHP</strong> provides several assignment operator shortcuts to simplify code and improve efficiency. These shortcuts include: </p> <ul> <li>Addition assignment: <code> =</code></li> <li>Subtractive assignment: <code>-=</code></li> <li>Multiplication assignment: <code>*=</code></li> <li> Division assignment: <code>/=</code></li> <li> Modulo assignment: <code>%=</code></li> </ul> <p>For example:</p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">$number += 5; $string .= &quot; World&quot;;</pre><div class="contentsignin">Copy after login</div></div> <p><strong>4. Logical operators</strong></p> <p>Logical operators are used to operate on Boolean values, including: </p> <ul> <li>AND (<code>&amp;&amp;</code>): True if both operands are true</li> <li>OR (<code>||</code>): True if at least one operand is true</li> <li>XOR (<code>^</code>): True if the values ​​of the operands are different</li> </ul> <p>For example:</p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">if ($valid &amp;&amp; $submitted) { // 处理表单提交 }</pre><div class="contentsignin">Copy after login</div></div> <p><strong>5. Bitwise operators</strong></p> <p>Bitwise operators are used to perform bit-level operations on integers, including: </p> <ul> <li>Bitwise AND (<code>&</code>): If each bit of the two integers is 1, the result is 1</li> <li>Bitwise OR (<code>|</code>): If any bit of the two integers is 1, the result is 1</li> <li>Bitwise XOR (<code>^</code>): If the bits of the two integers are the same, it is 0, otherwise it is 1</li> <li>Bitwise left shift (<code><<</code>): Shift the bits of the integer to the left by the specified number of bits</li> <li>Bitwise right shift (<code>>></code>): Move the bits of the integer to the right by the specified number of bits</li> </ul> <p>For example:</p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">$mask = 0b11111000; $result = $number &amp; $mask; // 清除整数的最低三位</pre><div class="contentsignin">Copy after login</div></div> <p><strong>6. Comparison operators</strong></p> <p>Comparison operators are used to compare two values, including: </p><ul> <li>Equal (<code>==</code>): Check whether two values ​​are equal</li> <li>Not equal to (<code>!=</code>): Check whether two values ​​are not equal to </li> <li>Less than (<code><</code>): Check whether the first value is less than the second value</li> <li>Greater than (<code>></code>): Check whether the first value is greater than the second value</li> <li>Less than or equal to (<code><=</code>): Check if the first value is less than or equal to the second value</li> <li>Greater than or equal to (<code>>=</code>): Check if the first value is greater than or equal to the second value</li> </ul> <p>For example:</p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false;">if ($value &gt; 100) { // 执行操作 }</pre><div class="contentsignin">Copy after login</div></div> <p><strong>in conclusion</strong></p> <p><strong class="keylink">php</strong> provides a variety of magical operators that can help developers improve code efficiency and readability. By skillfully using these operators, developers can create code that is cleaner, more efficient, and more maintainable. </p>

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