Question

我已经尝试了上面的代码......但它没有用。我只是想用新的<img>和src更改整个class代码..但我知道了添加到<img>标记中的属性...我的验证仅限于此如果匹配img src，则将整个<img>标记替换为新标记...

$match="abc.jpg";    
$url ="<img class='descimg' src='111'>";

preg_replace('/<img[^>]*?src=\"'.preg_quote($match).'"',$url,$html);

请帮帮我

谢谢

Answer 1

对我说评论以下preg_replace行应该更好。我实际上无法从你的描述中准确地告诉你你想要做什么。如果你包括你的预期输出，我会根据需要改进我的答案。

    ErrorException in 3bda00b66abf627abd64dcb541751a9b753d4384.php line 33:
Undefined variable: posts (View: C:\wamp\www\laravel\resources\views\dashboard.blade.php)
    in 3bda00b66abf627abd64dcb541751a9b753d4384.php line 33
at CompilerEngine->handleViewException(object(ErrorException), '1') in PhpEngine.php line 44
at PhpEngine->evaluatePath('C:\wamp\www\laravel\storage\framework\views/3bda00b66abf627abd64dcb541751a9b753d4384.php', array('__env' => object(Factory), 'app' => object(Application), 'errors' => object(ViewErrorBag))) in CompilerEngine.php line 59
at CompilerEngine->get('C:\wamp\www\laravel\resources\views/dashboard.blade.php', array('__env' => object(Factory), 'app' => object(Application), 'errors' => object(ViewErrorBag))) in View.php line 150
at View->getContents() in View.php line 121
at View->renderContents() in View.php line 86
at View->render() in Response.php line 45
at Response->setContent(object(View)) in Response.php line 201
at Response->__construct(object(View)) in Router.php line 1042
at Router->prepareResponse(object(Request), object(View)) in Router.php line 642
at Router->Illuminate\Routing\{closure}(object(Request)) in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in SubstituteBindings.php line 41
at SubstituteBindings->handle(object(Request), object(Closure)) in Pipeline.php line 137
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in VerifyCsrfToken.php line 64
at VerifyCsrfToken->handle(object(Request), object(Closure)) in Pipeline.php line 137
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in ShareErrorsFromSession.php line 49
at ShareErrorsFromSession->handle(object(Request), object(Closure)) in Pipeline.php line 137
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in StartSession.php line 64
at StartSession->handle(object(Request), object(Closure)) in Pipeline.php line 137
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in AddQueuedCookiesToResponse.php line 37
at AddQueuedCookiesToResponse->handle(object(Request), object(Closure)) in Pipeline.php line 137
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in EncryptCookies.php line 59
at EncryptCookies->handle(object(Request), object(Closure)) in Pipeline.php line 137
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in Pipeline.php line 104
at Pipeline->then(object(Closure)) in Router.php line 644
at Router->runRouteWithinStack(object(Route), object(Request)) in Router.php line 618
at Router->dispatchToRoute(object(Request)) in Router.php line 596
at Router->dispatch(object(Request)) in Kernel.php line 267
at Kernel->Illuminate\Foundation\Http\{closure}(object(Request)) in Pipeline.php line 53
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in CheckForMaintenanceMode.php line 46
at CheckForMaintenanceMode->handle(object(Request), object(Closure)) in Pipeline.php line 137
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in Pipeline.php line 33
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in Pipeline.php line 104
at Pipeline->then(object(Closure)) in Kernel.php line 149
at Kernel->sendRequestThroughRouter(object(Request)) in Kernel.php line 116
at Kernel->handle(object(Request)) in index.php line 53

我还注意到$ match没有出现在原始字符串中，所以奇怪的是它是正则表达式的一部分吗？

匹配图像src与新的匹配替换整个img标记

1 个答案: