PHP字符分割explode，split，preg_split性能比较

苏承栈

2026-09-14 • 👁 0人浏览过

PHP字符分割explode，split，preg_split性能比较三个函数都是用来对字符串进行分割，下面分几个实验来比较之间的性能。 1. explode与split比较都用字符进行分割，执行10次代码：

for($num=0;$num<9;$num++)
{
    $stime=microtime();
    for($i=0;$i<10000;$i++)
    {
        explode(',','hello,world');
    }
    $etime=microtime();
    printf("explode takes %f \n",$etime-$stime);
}
for($num=0;$num<9;$num++)
{
    $stime=microtime();
    for($i=0;$i<10000;$i++)
    {
        split(',','hello,world');
    }
    $etime=microtime();
    printf("split takes %f \n",$etime-$stime);
}

结果：立即学习 “ PHP免费学习笔记（深入） ”； explode takes 0.009193 explode takes 0.007066 explode takes 0.007623 explode takes 0.005829 explode takes 0.005497 explode takes 0.005734 explode takes 0.005502 explode takes 0.005515 explode takes 0.005524 split takes 0.008976 split takes 0.008971 split takes 0.009030 split takes 0.009173 split takes 0.009913 split takes 0.012656 split takes 0.012153 split takes 0.009161 split takes 0.008948 结论：都用字符进行分割的情况下，explode性能优于split PHP 8.5.5 PHP 8.5.5 是 PHP 8.5 分支的维护更新版本。该版本延续了“小步快跑”的迭代逻辑，通过深度错误修复、底层性能微调以及安全加固，旨在为开发者提供一个更健壮、更高效的运行环境。该版本严格遵守语义化版本规范，不包含破坏性变更。下载 split用正则进行分割：代码：

for($num=0;$num<9;$num++)
{
    $stime=microtime();
    for($i=0;$i<10000;$i++)
    {
        explode(',','hello,world');
    }
    $etime=microtime();
    printf("explode takes %f \n",$etime-$stime);
}
for($num=0;$num<9;$num++)
{
    $stime=microtime();
    for($i=0;$i<10000;$i++)
    {
        split('/,/','hello,world');
    }
    $etime=microtime();
    printf("split takes %f \n",$etime-$stime);
}

结果： explode takes 0.005649 explode takes 0.005719 explode takes 0.005792 explode takes 0.005975 explode takes 0.005723 explode takes 0.005812 explode takes 0.005860 explode takes 0.005756 explode takes 0.005835 split takes 0.005158 split takes 0.005170 split takes 0.005440 split takes 0.005402 split takes 0.005272 split takes 0.005434 split takes 0.006389 split takes 0.005414 split takes 0.005510 结论：在split使用正则分割的情况下，两者性能不相上下 2. split与preg_split比较代码：

for($num=0;$num<9;$num++)
{
    $stime=microtime();
    for($i=0;$i<10000;$i++)
    {
        split('/,/','hello,world');
    }
    $etime=microtime();
    printf("split takes %f \n",$etime-$stime);
}
for($num=0;$num<9;$num++)
{
    $stime=microtime();
    for($i=0;$i<10000;$i++)
    {
        preg_split("/,/","hello,world");
    }
    $etime=microtime();
    printf("preg_split takes %f \n",$etime-$stime);
}

结果： split takes 0.005381 split takes 0.005568 split takes 0.005107 split takes 0.005097 split takes 0.005444 split takes 0.005538 split takes 0.005095 split takes 0.005112 split takes 0.005087 preg_split takes 0.009364 preg_split takes 0.009568 preg_split takes 0.009037 preg_split takes 0.008957 preg_split takes 0.009021 preg_split takes 0.009656 preg_split takes 0.009038 preg_split takes 0.008962 preg_split takes 0.009412 结论：split性能优于preg_split

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