php - 用php字符串中的任何内容替换除英文字母，数字和键盘符号以外的所有项目

Question

我有一个 php 字符串，其中可能包含中文和其他不是 utf8 的符号。我需要删除所有这些，并且只需要维护英文字母、数字和常用符号以及空格。

我试过这样的正则表达式

    $text = preg_replace('/[^A-Za-z0-9\-]/', ' ', $words);

但我没有得到想要的输出。我的字符串将是这样的：

l 2014 ;59:316 �猫聦聙 Efficacy and Safety of Terbinafine Hydrochloride 1% Cream vs. Sertaconazole Nitrate 2% Cream in Tinea Corporis and Tinea Cruris: A Comparative Therapeutic Trial .Indian Journal of Dermatology 2013 ;58(6):457 - 460 �猫聦聙 Congenital cutis laxa with rectal and uterovaginal prolapse. Indian J Dermatol Venereol Leprol 2011 ;77:321 - 4 �猫聦聙 Dermatitis neglecta. Indian J Dermatol Venereol Leprol 2011 ;77:62 - 3 �猫聦聙 Ichthyosis bullosa of Siemens sans history of blistering: an interesting case report Journal of Pakistan Association of Dermatologists 2009 ; 19: 171 - 174 Paper presentations �猫聦聙 Study of Autologous Serum Skin Test In Chronic Idiopathic Urtic aria at Cuticon conference , Dec 2010 �猫聦聙 Scenerio of Leprosy at Tertiary Care Level Centre In Rural Central India at Cuticon conference , Nov 2009 Poster presentations �猫聦聙 Extrav

我想删除�猫聦聙喜欢的东西。

标签： phpregexutf-8

Answer 1

看起来您只想保留可打印的 ASCII 字符并希望摆脱其余字符。

您可以使用此正则表达式，它将保留所有可打印的 ascii 字符并删除其余字符，

[^ -~]+

这个正则表达式基本上使用范围字符集，从空格开始到最后一个 ascii 字符，即波浪号。

在线演示

让我知道这是否适合您。如果您还想进一步从 ASCII 列表中排除一些字符，这很容易做到。让我知道。

PHP代码演示，

$words = "l 2014 ;59:316 �猫聦聙 Efficacy and Safety of Terbinafine Hydrochloride 1% Cream vs. Sertaconazole Nitrate 2% Cream in Tinea Corporis and Tinea Cruris: A Comparative Therapeutic Trial .Indian Journal of Dermatology 2013 ;58(6):457 - 460 �猫聦聙 Congenital cutis laxa with rectal and uterovaginal prolapse. Indian J Dermatol Venereol Leprol 2011 ;77:321 - 4 �猫聦聙 Dermatitis neglecta. Indian J Dermatol Venereol Leprol 2011 ;77:62 - 3 �猫聦聙 Ichthyosis bullosa of Siemens sans history of blistering: an interesting case report Journal of Pakistan Association of Dermatologists 2009 ; 19: 171 - 174 Paper presentations �猫聦聙 Study of Autologous Serum Skin Test In Chronic Idiopathic Urtic aria at Cuticon conference , Dec 2010 �猫聦聙 Scenerio of Leprosy at Tertiary Care Level Centre In Rural Central India at Cuticon conference , Nov 2009 Poster presentations �猫聦聙 Extrav";
echo preg_replace('/[^ -~]+/', '', $words);

仅打印您想要的字符。

l 2014 ;59:316  Efficacy and Safety of Terbinafine Hydrochloride 1% Cream vs. Sertaconazole Nitrate 2% Cream in Tinea Corporis and Tinea Cruris: A Comparative Therapeutic Trial .Indian Journal of Dermatology 2013 ;58(6):457 - 460  Congenital cutis laxa with rectal and uterovaginal prolapse. Indian J Dermatol Venereol Leprol 2011 ;77:321 - 4  Dermatitis neglecta. Indian J Dermatol Venereol Leprol 2011 ;77:62 - 3  Ichthyosis bullosa of Siemens sans history of blistering: an interesting case report Journal of Pakistan Association of Dermatologists 2009 ; 19: 171 - 174 Paper presentations  Study of Autologous Serum Skin Test In Chronic Idiopathic Urtic aria at Cuticon conference , Dec 2010  Scenerio of Leprosy at Tertiary Care Level Centre In Rural Central India at Cuticon conference , Nov 2009 Poster presentations  Extrav

在线 PHP 演示