PHP 7 新特性
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<p>PHP 7+ 版本极大地改进了性能，在一些WordPress基准测试当中，性能可以达到PHP 5.6的3倍。</p>
<p>PHP 7+ 版本新加特性如下表所示：</p>
<table><tbody><tr><th>序号</th><th>内容</th></tr><tr><td>1</td><td><ahref="https://www.runoob.com/php/php-scalar-return-type.html">PHP 标量类型与返回值类型声明</a></td></tr><tr><td>2</td><td><ahref="https://www.runoob.com/php/php-coalescing-operator.html">PHP NULL 合并运算符</a></td></tr><tr><td>3</td><td><ahref="https://www.runoob.com/php/php-spaceship-operator.html">PHP 太空船运算符（组合比较符）</a></td></tr><tr><td>4</td><td><ahref="https://www.runoob.com/php/php-constant-arrays.html">PHP 常量数组</a></td></tr><tr><td>5</td><td><ahref="https://www.runoob.com/php/php-anonymous-classes.html">PHP 匿名类</a></td></tr><tr><td>6</td><td><ahref="https://www.runoob.com/php/php-closure-call.html">PHP Closure::call()</a></td></tr><tr><td>7</td><td><ahref="https://www.runoob.com/php/php-filtered-unserialize.html">PHP 过滤 unserialize()</a></td></tr><tr><td>8</td><td><ahref="https://www.runoob.com/php/php-intlchar.html">PHP IntlChar()</a></td></tr><tr><td>9</td><td><ahref="https://www.runoob.com/php/php-csprng.html">PHP CSPRNG</a></td></tr><tr><td>10</td><td><ahref="https://www.runoob.com/php/php-expectations.html">PHP 7 异常</a></td></tr><tr><td>11</td><td><ahref="https://www.runoob.com/php/php-use-statement.html">PHP 7 use 语句</a></td></tr><tr><td>12</td><td><ahref="https://www.runoob.com/php/php-error-handling.html">PHP 7 错误处理</a></td></tr><tr><td>13</td><td><ahref="https://www.runoob.com/php/php-intdiv.html">PHP intdiv() 函数</a></td></tr><tr><td>14</td><td><ahref="https://www.runoob.com/php/php-session-options.html">PHP 7 Session 选项</a></td></tr><tr><td>15</td><td><ahref="https://www.runoob.com/php/php-deprecated-features.html">PHP 7 废弃特性</a></td></tr><tr><td>16</td><td><ahref="https://www.runoob.com/php/php-removed-extensions.html">PHP 7 移除的扩展</a></td></tr><tr><td>17</td><td><ahref="https://www.runoob.com/php/php-remove-sapi.html">PHP 7 移除的 SAPI</a></td></tr></tbody></table>
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