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正则过滤字符串
<br /><?php<br />//中文编码包含UTF-8,GBK<br />$str = "新_建&文\件,夹 abd";<br />//获取结果<br />$res = "新建文件夹abd";<br />//包含非法字符:<br />$out[0] = "_";<br />$out[1] = "&";<br />$out[2] = "\";<br />$out[3] = " ";<br />$out[4] = ",";<br />?><br />