如何结合 PHP 的 log10 函数与 number_format 格式化输出计算结果？

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</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<h1>如何结合 PHP 的 log10 函数与 number_format 格式化输出计算结果？</h1>"</span></span><span>;

</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<p>在 PHP 中，如果我们想对一个数字进行以 10 为底的对数计算，并且希望将结果以更加易读的格式输出，可以结合 <code>log10()

\$value = 12345.6789;
echo number_format(\$value, 2); // 输出 12,345.68

\$num = 98765;
\$logResult = log10(\$num);           // 计算以 10 为底的对数
\$formatted = number_format(\$logResult, 2); // 保留 2 位小数并格式化
echo \$formatted; // 输出结果例如 4.99

\$numbers = [10, 100, 1000, 12345];

foreach (\$numbers as \$n) {
    \$logVal = log10(\$n);
    echo 'log10(' . \$n . ') = ' . number_format(\$logVal, 2) . '<br>';
}