在php中,可以使用preg_replace()函数配合正则表达式(/\\d+/)来去掉字符串中的数字字符;语法“preg_replace("/\\d+/",'', 指定字符串);”。preg_replace执行一个正则表达式的搜索和替换。
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php去掉字符串中的数字字符
可以使用preg_replace()函数来删除字符串中的数字字符。此函数执行正则表达式搜索和替换。函数preg_replace()搜索由pattern(要搜索的模式)指定的字符串,如果找到则用替换替换模式。
方:1:正则表达式(/\\d+/)匹配使用数字字符,并用''(空字符串)替换它们。
preg_replace("/\\d+/",'', 指定字符串);
示例
<?php // 包含数字字符的字符串 $str="php.cn2020"; // preg_replace函数删除数字字符 $str = preg_replace( '/\\d+/', '', $str); //打印字符串 echo($str); ?>
输出:
php.cn
方法2:方法2:正则表达式'/ [0-9] / '匹配所有非字母数字字符,并用''(空字符串)替换它们。
$str = preg_replace( '/[0-9]/', '', $str);
在正则表达式中:
0-9:用于匹配所有数字。
示例:
输出:
php.cn
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