blocks|key|2244586|text|//+fastest+way
echo+substr($text,+0,+strpos('.',+$text));|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2244587|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>// fastest way
echo substr($text, 0, strpos('.', $text));
</code></pre>

blocks|key|159126|text|对于PHP5.3和更高版本，可以将before_needle参数与strstr一起使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|159127|strstr(+$youstringhere,+".",+true+);|code-block|syntax|javascript|159128|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|$]]

For PHP 5.3 and later you could use the before_needle argument with strstr:

<pre><code>strstr( $youstringhere, ".", true );
</code></pre>

blocks|key|3849393|text|您可以使用explode()函数拆分它。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3849394|$sentences+=+explode+(".",+$text);
//+first+sentence+is+in+$sentences[0]|code-block|syntax|javascript|3849395|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/function.explode.php^0|5|9|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

You can split it using the <a href="http://php.net/manual/en/function.explode.php" rel="nofollow">explode()</a> function.

<pre><code>$sentences = explode (".", $text);
// first sentence is in $sentences[0]
</code></pre>

blocks|key|3849416|text|这样怎么样(其他人建议使用explode+--所以我建议使用另一种解决方案)：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3849417|$str+=+"Lorem+Ipsum+is+simply+dummy+text+of+the+printing+and+typesetting+industry.+Lorem+Ipsum+has+been+the+industry's+standard+dummy+text+ever+since+the+1500s,+when+an+unknown+printer+took+a+galley+of+type+and+scrambled+it+to+make+a+type+specimen+book.+It+has+survived+not+only+five+centuries,+but+also+the+leap+into+electronic+typesetting,+remaining+essentially+unchanged.+It+was+popularised+in+the+1960s+with+the+release+of+Letraset+sheets+containing+Lorem+Ipsum+passages,+and+more+recently+with+desktop+publishing+software+like+Aldus+PageMaker+including+versions+of+Lorem+Ipsum.";

if+(preg_match('/%5E([%5E\.]*)/',+$str,+$matches))+{
++++echo+$matches[1]+.+'.';
}|code-block|syntax|javascript|3849418|正则表达式将：|3849419|字符串开头：%5E|3849420|Match+|unordered-list-item|3849421|不是a的任何东西。：[%5E\.]|3849422|Any次数：[%5E\.]*|3849423|3849424|3849425|而且，由于您希望在输出的末尾有一个.，而正则表达式与该.不匹配，因此在使用正则表达式找到的内容时，必须将其添加回来。|3849426|entityMap^0|D|7|0|0|0|6|1|0|0|A|5|0|6|6|0|0|0|H|1|R|1|0^^$0|@$1|2|3|4|5|6|7|11|8|@$9|12|A|13|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|14|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|15|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|O|3|P|5|Q|7|19|8|@]|D|@]|E|$]]|$1|R|3|S|5|Q|7|1A|8|@$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|T|3|U|5|Q|7|1D|8|@$9|1E|A|1F|B|C]]|D|@]|E|$]]|$1|V|3|-4|5|6|7|1G|8|@]|D|@]|E|$]]|$1|W|3|-4|5|6|7|1H|8|@]|D|@]|E|$]]|$1|X|3|Y|5|6|7|1I|8|@$9|1J|A|1K|B|C]|$9|1L|A|1M|B|C]]|D|@]|E|$]]|$1|Z|3|-4|5|6|7|1N|8|@]|D|@]|E|$]]]|10|$]]

What about something like this (others have suggested using <code>explode</code> -- so I'm suggesting another solution) :

<pre><code>$str = "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.";

if (preg_match('/^([^\.]*)/', $str, $matches)) {
 echo $matches[1] . '.';
}
</code></pre>

 
The regex will :

<ul>
<li>Start at beginning of string : <code>^</code></li>
<li>Match anything that's not a . : <code>[^\.]</code></li>
<li>Any number of times : <code>[^\.]*</code></li>
</ul>

And, as you wanted a <code>.</code> at the end of the output and that <code>.</code> is not matched by the regex, you'll have to add it back when using what's been found by the regex.

blocks|key|1777379|text|您可以使用explode()来获得第一句话。http://de.php.net/manual/en/function.explode.php|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1777380|entityMap|0|LINK|mutability|MUTABLE|url|http://de.php.net/manual/en/function.explode.php^0|M|1C|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

You could use explode() to get the first sentence. 
<a href="http://de.php.net/manual/en/function.explode.php" rel="nofollow">http://de.php.net/manual/en/function.explode.php</a>

"Lorem Ipsum is simply dummy text of the printing and typesetting industry."

from

"Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum."

how can we do that ? is there a good function in php for doing things like this ?

Thanks

Adam Ramadhan

get a string before the first "." with php

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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"Lorem Ipsum只是印刷和排版行业的虚拟文本。“从…Lorem Ipsum只是印刷和排版工业的虚拟文本。自15世纪以来，Lorem Ipsum一直是印刷和排版行业的标准虚拟文本。当时，一家未知的印刷商将一条排字槽拿出来，然后把它弄成一本打字样书。它不仅存活了五个世纪，而且在进入电子排版后基本上保持不变。它在20世纪60年代流行起来，当时发布了包含Lorem Ipsum段落的Letraset

问获取第一个字符串之前的字符串“。使用php
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