问题描述
对我来说，最好的方法是什么?我应该使用正则表达式还是可以使用另一个内置的PHP函数?
What is the best way for me to do this? Should I use regex or is there another in-built PHP function I can use?
例如，我想要:12 months成为12. Every 6 months变为6，1M变为1，等等.
For example, I'd want: 12 months to become 12. Every 6 months to become 6, 1M to become 1, etc.
谢谢
推荐答案
您可以使用 preg_replace ；
$res = preg_replace("/[^0-9]/", "", "Every 6 Months" );
在这种情况下，$ res返回6.
$res return 6 in this case.
如果还希望包含小数点分隔符或千位分隔符，请检查以下示例:
If want also to include decimal separator or thousand separator check this example:
$res = preg_replace("/[^0-9.]/", "", "$ 123.099");
在这种情况下，$ res返回"123.099"
$res returns "123.099" in this case
包括句点作为小数点分隔符或千位分隔符:"/[^ 0-9.]/"
Include period as decimal separator or thousand separator: "/[^0-9.]/"
包括逗号作为小数点分隔符或千位分隔符:"/[^ 0-9，]/"
Include coma as decimal separator or thousand separator: "/[^0-9,]/"
包括句点和逗号作为小数点分隔符和千位分隔符:"/[^ 0-9，.]/"
Include period and coma as decimal separator and thousand separator: "/[^0-9,.]/"
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