問題描述
在 PHP 中，我有一個(gè)變量數(shù)組，它們都是字符串.一些存儲(chǔ)的值是帶逗號(hào)的數(shù)字字符串.
In PHP, I have an array of variables that are ALL strings. Some of the values stored are numeric strings with commas.
我需要什么:
一種從字符串中修剪逗號(hào)的方法，并且僅對數(shù)字字符串執(zhí)行此操作.這并不像看起來那么簡單.主要原因是以下失敗:
A way to trim the commas from strings, and ONLY do this for numeric strings. This isn't as straightforward as it looks. The main reason is that the following fails:
$a = "1,435";
if(is_numeric($a))
$a = str_replace(',', '', $a);
這失敗了，因?yàn)?$a = "1435" 是數(shù)字.但是 $a = "1,435" 不是數(shù)字.因?yàn)槲业玫降囊恍┳址畬⑹菐Ф禾?hào)的常規(guī)句子，所以我無法對每個(gè)字符串運(yùn)行字符串替換.
This fails because $a = "1435" is numeric. But $a = "1,435" is not numeric. Because some of the strings I get will be regular sentences with commas, I can't run a string replace on every string.
推薦答案
未測試，但可能類似于 if(preg_match("/^[0-9,]+$/", $a)) $a = str_replace(...)
Not tested, but probably something like if(preg_match("/^[0-9,]+$/", $a)) $a = str_replace(...)
這篇關(guān)于PHP 從數(shù)字字符串中刪除逗號(hào)的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！