3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = '我这是怎么了'; echo preg_replace("/([u4e00-u9fa5].)/","<font color=red>1</font>",$str); $test = "php编程"; if (preg_match("/^[x{4e00}-x{9fa5}]+$/u",$test)) { print("该字符串全部是中文"); } else { print("该字符串不全部是中文"); } ?>
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.14, 8.4.1
我这是怎么了 Warning: preg_match(): Compilation failed: range out of order in character class at offset 10 in /in/1p8r0 on line 5 该字符串不全部是中文
preferences:
47.3 ms | 408 KiB | 5 Q