PHP - preg_replace 和 UTF8

Question

我当前正在从数据库中检索数据。我收到一个数组，其中包含带有 UTF8 编码值的“标题”索引。我想要的是使用这个值作为保存某些内容的文件的名称，所以我这样做：

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file_put_contents($filename, $content);\n

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$文件名在哪里

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\'-\' . $category[\'root\'] . \'-articles-\' . $category[\'id\'] . \'-\' . $this->Urlize($category[\'category\'])\n

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这是“Urlize”的代码：

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private function Urlize($value)\n{\n    if ($value != null && trim($value) != \'\')\n    {\n        $value = preg_replace(\'/([\\[\\(].*[\\]\\)])/i\', \'\', $value);\n        $value = preg_replace(\'/[\\s]/i\', \'-\', $value);\n        $value = preg_replace(\'/[,!?.;:\\"\\\'&+\\/]/i\', \'-\', $value);\n        $value = preg_replace(\'/[-]+/i\', \'-\', $value);\n        $value = preg_replace(\'/(^-)/i\', \'\', $value);\n        $value = preg_replace(\'/-$/i\', \'\', $value);\n        $value = preg_replace(\'/[\xc3\xa9\xc3\xa8\xc3\xaa]/i\', \'e\', $value);\n        $value = preg_replace(\'/[\xc3\xa2\xc3\xa0]/i\', \'a\', $value);\n        $value = preg_replace(\'/[\xc3\xb6\xc3\xb4]/i\', \'o\', $value);\n        $value = preg_replace(\'/[\xc3\xbb\xc3\xb9\xc3\xbc]/i\', \'u\', $value);\n        $value = preg_replace(\'/[\xc3\xae\xc3\xaf\xc3\xad\xc3\xac]/i\', \'i\', $value);\n        $value = preg_replace(\'/[#]/i\', \'sharp\', $value);\n        $value = preg_replace(\'/[<>]/i\', \'-\', $value);\n\n        if ($value[strlen($value) - 1] == \'-\')\n        {\n            $value = substr($value, 0, strlen($value) - 1);\n        }\n    }\n\n    return strtolower($value);\n}\n

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我的问题是，对于标题“Th\xc3\xa9orie g\xc3\xa9n\xc3\xa9rale”，我得到“theeorie-geeneerale”，因此“e”加倍。我想这与字符集有关，因为我找不到避免它的好方法。当然，我想要“一般理论”。

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谢谢

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Answer 1

u在正则表达式中使用 unicode 时，需要使用 unicode 修饰符。

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所以尝试：

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function Urlize($value) {\n    if ($value != null && trim($value) != \'\')\n    {\n        $value = preg_replace(\'/([\\[\\(].*[\\]\\)])/i\', \'\', $value);\n        $value = preg_replace(\'/[\\s]/i\', \'-\', $value);\n        $value = preg_replace(\'/[,!?.;:\\"\\\'&+\\/]/i\', \'-\', $value);\n        $value = preg_replace(\'/[-]+/i\', \'-\', $value);\n        $value = preg_replace(\'/(^-)/i\', \'\', $value);\n        $value = preg_replace(\'/-$/i\', \'\', $value);\n        $value = preg_replace(\'/[\xc3\xa9\xc3\xa8\xc3\xaa]/iu\', \'e\', $value);\n        $value = preg_replace(\'/[\xc3\xa2\xc3\xa0]/iu\', \'a\', $value);\n        $value = preg_replace(\'/[\xc3\xb6\xc3\xb4]/iu\', \'o\', $value);\n        $value = preg_replace(\'/[\xc3\xbb\xc3\xb9\xc3\xbc]/ui\', \'u\', $value);\n        $value = preg_replace(\'/[\xc3\xae\xc3\xaf\xc3\xad\xc3\xac]/ui\', \'i\', $value);\n        $value = preg_replace(\'/[#]/i\', \'sharp\', $value);\n        $value = preg_replace(\'/[<>]/i\', \'-\', $value);\n\n        if ($value[strlen($value) - 1] == \'-\')\n        {\n            $value = substr($value, 0, strlen($value) - 1);\n        }\n    }\n    return strtolower($value);\n}\necho Urlize(\'Th\xc3\xa9orie g\xc3\xa9n\xc3\xa9rale\');\n

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演示：http://sandbox.onlinephpfunctions.com/code/3b7e5985dc23ac71a6298783d2dad646d875d3c8

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输出：

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一般理论

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您可以使用|（或）分组来减少 preg_replace 的数量。但这可能会让你的正则表达式更难阅读。您还可以使用数组进行查找和替换。这是第一种方法。

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function Urlize($value) {\n    if ($value != null && trim($value) != \'\')\n    {\n        $value = preg_replace(\'/(([\\[\\(].*[\\]\\)])|(^-)|-$)/i\', \'\', $value);\n        $value = preg_replace(\'/([,!?.;:\\"\\\'&+\\/]|[\\s]|[-]+|[<>])/i\', \'-\', $value);\n        $value = preg_replace(\'/[\xc3\xa9\xc3\xa8\xc3\xaa]/iu\', \'e\', $value);\n        $value = preg_replace(\'/[\xc3\xa2\xc3\xa0]/iu\', \'a\', $value);\n        $value = preg_replace(\'/[\xc3\xb6\xc3\xb4]/iu\', \'o\', $value);\n        $value = preg_replace(\'/[\xc3\xbb\xc3\xb9\xc3\xbc]/ui\', \'u\', $value);\n        $value = preg_replace(\'/[\xc3\xae\xc3\xaf\xc3\xad\xc3\xac]/ui\', \'i\', $value);\n        $value = preg_replace(\'/[#]/i\', \'sharp\', $value);\n        if ($value[strlen($value) - 1] == \'-\') {\n            $value = substr($value, 0, strlen($value) - 1);\n        }\n    }\n    return strtolower($value);\n}\necho Urlize(\'Th\xc3\xa9orie g\xc3\xa9n\xc3\xa9rale\');\n

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