blocks|key|1186079|text|可以使用ltrim|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1186080|ltrim('+23+PM',+'+0123456789');|code-block|syntax|javascript|1186081|这将从字符串的左侧删除任何数字和空格。如果两端都需要，可以使用trim。如果您只需要在右侧使用它，则可以使用rtrim。|1186082|entityMap|0|LINK|mutability|MUTABLE|url|http://de.php.net/manual/en/function.ltrim.php^0|4|5|4|5|0|0|0|V|4|1I|5|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|F|3|G|5|H|7|10|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

Can do with <a href="http://de.php.net/manual/en/function.ltrim.php" rel="noreferrer"><code>ltrim</code></a>

<pre><code>ltrim(' 23 PM', ' 0123456789');
</code></pre>

This would remove any number and spaces from the left side of the string. If you need it for both sides, you can use <code>trim</code>. If you need it for just the right side, you can use <code>rtrim</code>.

blocks|key|971815|text|也可以使用str_replace，它通常是比RegEx更快的替代方案。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|971816|str_replace(array(1,2,3,4,5,6,7,8,9,0,'+'),'',+'+23+PM');
//+or
str_replace(str_split('+0123456789'),+'',+'+23+PM');|code-block|syntax|javascript|971817|它将替换任何数字0-9和字符串中的空格，而与位置无关。|971818|entityMap|0|LINK|mutability|MUTABLE|url|http://de.php.net/manual/en/function.str-replace.php^0|5|B|5|B|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|F|3|G|5|H|7|10|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|11|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

Can also use <a href="http://de.php.net/manual/en/function.str-replace.php" rel="nofollow noreferrer"><code>str_replace</code></a>, which is often the faster alternative to RegEx.

<pre><code>str_replace(array(1,2,3,4,5,6,7,8,9,0,' '),'', ' 23 PM');
// or
str_replace(str_split(' 0123456789'), '', ' 23 PM');
</code></pre>

which would replace any number 0-9 and the space from the string, regardless of position.

blocks|key|1186147|text|$str+=+preg_replace("/%5E[0-9+]%2B/",+"",+$str);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1186148|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>$str = preg_replace("/^[0-9 ]+/", "", $str);
</code></pre>

blocks|key|971840|text|echo+trim(str_replace(range(0,9),'','+23+PM'));|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|971841|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>echo trim(str_replace(range(0,9),'',' 23 PM'));
</code></pre>

blocks|key|1186155|text|正则表达式|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1186156|preg_replace('#[0-9+]*#',+'',+$string);|code-block|syntax|javascript|1186157|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Regex

<pre><code>preg_replace('#[0-9 ]*#', '', $string);
</code></pre>

blocks|key|971887|text|您还可以使用以下内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|971888|preg_replace('/\d/',+'','+23+PM'+);|code-block|syntax|javascript|971889|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can also use the following:

<pre><code>preg_replace('/\d/', '',' 23 PM' );
</code></pre>

blocks|key|1186218|text|trim()将允许在“字符掩码”参数中使用点语法的字符范围。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1186219|代码：(Demo)|1186220|//++++++++++++++v--------literal+spaces
trim("+23+PM",+'+0..9')
//+++++++++++++++%5E%5E%5E%5E----all+digits
//+output:+PM|code-block|syntax|javascript|1186221|entityMap|0|LINK|mutability|MUTABLE|url|https://3v4l.org/6CXpO^0|0|6|0|4|4|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@$9|Y|A|Z|1|10]]|E|$]]|$1|H|3|I|5|J|7|11|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

<code>trim()</code> will allow a range of characters in the &quot;character mask&quot; parameter by using dot syntax.
Code: (<a href="https://3v4l.org/6CXpO" rel="nofollow noreferrer">Demo</a>)
<pre><code>// v--------literal spaces
trim(&quot; 23 PM&quot;, ' 0..9')
// ^^^^----all digits
// output: PM
</code></pre>

I have a string like this:

<pre><code>" 23 PM"
</code></pre>

I would like to remove <code>23</code> so I'm left with <code>PM</code> or (with space truncated) just <code>PM</code>.

Any suggestions?

Needs to be in PHP

How to remove numbers from a string with RegEx

我有一个这样的字符串：" 23 PM"我想删除23，这样我就只剩下PM或者(空间被截断) PM了。有什么建议吗？需要使用PHP

问如何使用RegEx从字符串中删除数字
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