字符串里貌似空格,如何删除?

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Release: 2016-07-06 13:54:00
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<code>$str ='                            Controllable Eu valence for photoluminescence tuning in apatite-typed';

在编码为GBK的情况下是'聽 聽 聽 聽 聽 聽 聽 聽 聽 聽 聽 聽 聽 聽Controllable Eu valence for photoluminescence tuning in apatite-typed';

在utf-8下是'                            Controllable Eu valence for photoluminescence tuning in apatite-typed';

</code>
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<code>如何去除空格?</code>
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<code>$str ='                            Controllable Eu valence for photoluminescence tuning in apatite-typed';

在编码为GBK的情况下是'聽 聽 聽 聽 聽 聽 聽 聽 聽 聽 聽 聽 聽 聽Controllable Eu valence for photoluminescence tuning in apatite-typed';

在utf-8下是'                            Controllable Eu valence for photoluminescence tuning in apatite-typed';

</code>
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<code>如何去除空格?</code>
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$str = preg_replace('/^[\pZ\pC]+|[\pZ\pC]+$/u','',$str);

http://php.net/manual/zh/regexp.reference.unicode.php

在选用 UTF-8模式时用于匹配通用字符类型

pC:所有的unicode“other”
pZ:所有的unicode“separator” ,所有空格和不可见字符

PHP合并多个连续的空格:
$output = preg_replace('/\s+/', ' ', $input);
\s 匹配任何空白字符,包括空格、制表符、换页符等等,等价于[ \f\n\r\t\v]
http://php.net/manual/zh/reference.pcre.pattern.syntax.php

$str = $str.replace(/s/g,'');

urlencode一下看看是什么字符,(是空格还是其他的)

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