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Relevant Search: With Applications for Solr and Elasticsearch
For more in depth reading about search, ranking and generally everything you could ever want to know about how lucene, elasticsearch or solr work under the hood I highly suggest this book. Easily one of the most interesting technical books I have read in a long time. If you are tasked with solving search relevance problems even if not in Solr or Elasticsearch it should be your first reference. Amazon Affiliate LinkHTML | 1025 lines | 912 code | 112 blank | 1 comment | 0 complexity | 9f57dd0ac4878f960bf9f5d31739ed82 MD5 | raw file
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class="toctree-l2"><a class="reference internal" href="../general/cli.html">Running via the CLI</a></li> 300<li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your Applications</a></li> 301<li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li> 302<li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li> 303<li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li> 304<li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li> 305</ul> 306</li> 307</ul> 308<ul class="current"> 309<li class="toctree-l1 current"><a class="reference internal" href="index.html">Libraries</a><ul class="current"> 310<li class="toctree-l2"><a class="reference internal" href="benchmark.html">Benchmarking Class</a></li> 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342</ul> 343<ul> 344<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul> 345<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li> 346<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li> 347<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li> 348<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li> 349<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li> 350<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li> 351<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li> 352<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li> 353<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li> 354<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li> 355<li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li> 356<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li> 357<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li> 358<li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li> 359</ul> 360</li> 361</ul> 362<ul> 363<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul> 364<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li> 365<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li> 366<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li> 367<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li> 368<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li> 369<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li> 370<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li> 371<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li> 372<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li> 373<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li> 374<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li> 375<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li> 376<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li> 377<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li> 378<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li> 379<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li> 380<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li> 381<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li> 382<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li> 383<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li> 384<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li> 385</ul> 386</li> 387</ul> 388 389 390 391 </div> 392 393 </nav> 394 395 <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> 396 397 398 <nav class="wy-nav-top" role="navigation" aria-label="top navigation"> 399 <i data-toggle="wy-nav-top" class="fa fa-bars"></i> 400 <a href="../index.html">CodeIgniter</a> 401 </nav> 402 403 404 405 <div class="wy-nav-content"> 406 <div class="rst-content"> 407 <div role="navigation" aria-label="breadcrumbs navigation"> 408 <ul class="wy-breadcrumbs"> 409 <li><a href="../index.html">Docs</a> »</li> 410 411 <li><a href="index.html">Libraries</a> »</li> 412 413 <li>File Uploading Class</li> 414 <li class="wy-breadcrumbs-aside"> 415 416 </li> 417 <div style="float:right;margin-left:5px;" id="closeMe"> 418 <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" /> 419 </div> 420 </ul> 421 <hr/> 422</div> 423 <div role="main" class="document"> 424 425 <div class="section" id="file-uploading-class"> 426<h1>File Uploading Class<a class="headerlink" href="#file-uploading-class" title="Permalink to this headline">¶</a></h1> 427<p>CodeIgniter’s File Uploading Class permits files to be uploaded. You can 428set various preferences, restricting the type and size of the files.</p> 429<div class="contents local topic" id="contents"> 430<ul class="simple"> 431<li><a class="reference internal" href="#the-process" id="id1">The Process</a><ul> 432<li><a class="reference internal" href="#creating-the-upload-form" id="id2">Creating the Upload Form</a></li> 433<li><a class="reference internal" href="#the-success-page" id="id3">The Success Page</a></li> 434<li><a class="reference internal" href="#the-controller" id="id4">The Controller</a></li> 435<li><a class="reference internal" href="#the-upload-directory" id="id5">The Upload Directory</a></li> 436<li><a class="reference internal" href="#try-it" id="id6">Try it!</a></li> 437</ul> 438</li> 439<li><a class="reference internal" href="#reference-guide" id="id7">Reference Guide</a><ul> 440<li><a class="reference internal" href="#initializing-the-upload-class" id="id8">Initializing the Upload Class</a></li> 441<li><a class="reference internal" href="#setting-preferences" id="id9">Setting Preferences</a></li> 442<li><a class="reference internal" href="#preferences" id="id10">Preferences</a></li> 443<li><a class="reference internal" href="#setting-preferences-in-a-config-file" id="id11">Setting preferences in a config file</a></li> 444</ul> 445</li> 446<li><a class="reference internal" href="#class-reference" id="id12">Class Reference</a></li> 447</ul> 448</div> 449<div class="custom-index container"></div><div class="section" id="the-process"> 450<h2><a class="toc-backref" href="#id1">The Process</a><a class="headerlink" href="#the-process" title="Permalink to this headline">¶</a></h2> 451<p>Uploading a file involves the following general process:</p> 452<ul class="simple"> 453<li>An upload form is displayed, allowing a user to select a file and 454upload it.</li> 455<li>When the form is submitted, the file is uploaded to the destination 456you specify.</li> 457<li>Along the way, the file is validated to make sure it is allowed to be 458uploaded based on the preferences you set.</li> 459<li>Once uploaded, the user will be shown a success message.</li> 460</ul> 461<p>To demonstrate this process here is brief tutorial. Afterward you’ll 462find reference information.</p> 463<div class="section" id="creating-the-upload-form"> 464<h3><a class="toc-backref" href="#id2">Creating the Upload Form</a><a class="headerlink" href="#creating-the-upload-form" title="Permalink to this headline">¶</a></h3> 465<p>Using a text editor, create a form called upload_form.php. In it, place 466this code and save it to your <strong>application/views/</strong> directory:</p> 467<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><</span><span class="nx">html</span><span class="o">></span> 468<span class="o"><</span><span class="nx">head</span><span class="o">></span> 469<span class="o"><</span><span class="nx">title</span><span class="o">></span><span class="nx">Upload</span> <span class="nx">Form</span><span class="o"></</span><span class="nx">title</span><span class="o">></span> 470<span class="o"></</span><span class="nx">head</span><span class="o">></span> 471<span class="o"><</span><span class="nx">body</span><span class="o">></span> 472 473<span class="o"><?</span><span class="nx">php</span> <span class="k">echo</span> <span class="nv">$error</span><span class="p">;</span><span class="cp">?></span> 474 475<span class="cp"><?php</span> <span class="k">echo</span> <span class="nx">form_open_multipart</span><span class="p">(</span><span class="s1">'upload/do_upload'</span><span class="p">);</span><span class="cp">?></span> 476 477<span class="p"><</span><span class="nt">input</span> <span class="na">type</span><span class="o">=</span><span class="s">"file"</span> <span class="na">name</span><span class="o">=</span><span class="s">"userfile"</span> <span class="na">size</span><span class="o">=</span><span class="s">"20"</span> <span class="p">/></span> 478 479<span class="p"><</span><span class="nt">br</span> <span class="p">/><</span><span class="nt">br</span> <span class="p">/></span> 480 481<span class="p"><</span><span class="nt">input</span> <span class="na">type</span><span class="o">=</span><span class="s">"submit"</span> <span class="na">value</span><span class="o">=</span><span class="s">"upload"</span> <span class="p">/></span> 482 483<span class="p"></</span><span class="nt">form</span><span class="p">></span> 484 485<span class="p"></</span><span class="nt">body</span><span class="p">></span> 486<span class="p"></</span><span class="nt">html</span><span class="p">></span> 487</pre></div> 488</div> 489<p>You’ll notice we are using a form helper to create the opening form tag. 490File uploads require a multipart form, so the helper creates the proper 491syntax for you. You’ll also notice we have an $error variable. This is 492so we can show error messages in the event the user does something 493wrong.</p> 494</div> 495<div class="section" id="the-success-page"> 496<h3><a class="toc-backref" href="#id3">The Success Page</a><a class="headerlink" href="#the-success-page" title="Permalink to this headline">¶</a></h3> 497<p>Using a text editor, create a form called upload_success.php. In it, 498place this code and save it to your <strong>application/views/</strong> directory:</p> 499<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><</span><span class="nx">html</span><span class="o">></span> 500<span class="o"><</span><span class="nx">head</span><span class="o">></span> 501<span class="o"><</span><span class="nx">title</span><span class="o">></span><span class="nx">Upload</span> <span class="nx">Form</span><span class="o"></</span><span class="nx">title</span><span class="o">></span> 502<span class="o"></</span><span class="nx">head</span><span class="o">></span> 503<span class="o"><</span><span class="nx">body</span><span class="o">></span> 504 505<span class="o"><</span><span class="nx">h3</span><span class="o">></span><span class="nx">Your</span> <span class="nb">file</span> <span class="nx">was</span> <span class="nx">successfully</span> <span class="nx">uploaded</span><span class="o">!</</span><span class="nx">h3</span><span class="o">></span> 506 507<span class="o"><</span><span class="nx">ul</span><span class="o">></span> 508<span class="o"><?</span><span class="nx">php</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$upload_data</span> <span class="k">as</span> <span class="nv">$item</span> <span class="o">=></span> <span class="nv">$value</span><span class="p">)</span><span class="o">:</span><span class="cp">?></span> 509<span class="p"><</span><span class="nt">li</span><span class="p">></span><span class="cp"><?php</span> <span class="k">echo</span> <span class="nv">$item</span><span class="p">;</span><span class="cp">?></span>: <span class="cp"><?php</span> <span class="k">echo</span> <span class="nv">$value</span><span class="p">;</span><span class="cp">?></span><span class="p"></</span><span class="nt">li</span><span class="p">></span> 510<span class="cp"><?php</span> <span class="k">endforeach</span><span class="p">;</span> <span class="cp">?></span> 511<span class="p"></</span><span class="nt">ul</span><span class="p">></span> 512 513<span class="p"><</span><span class="nt">p</span><span class="p">></span><span class="cp"><?php</span> <span class="k">echo</span> <span class="nx">anchor</span><span class="p">(</span><span class="s1">'upload'</span><span class="p">,</span> <span class="s1">'Upload Another File!'</span><span class="p">);</span> <span class="cp">?></span><span class="p"></</span><span class="nt">p</span><span class="p">></span> 514 515<span class="p"></</span><span class="nt">body</span><span class="p">></span> 516<span class="p"></</span><span class="nt">html</span><span class="p">></span> 517</pre></div> 518</div> 519</div> 520<div class="section" id="the-controller"> 521<h3><a class="toc-backref" href="#id4">The Controller</a><a class="headerlink" href="#the-controller" title="Permalink to this headline">¶</a></h3> 522<p>Using a text editor, create a controller called Upload.php. In it, place 523this code and save it to your <strong>application/controllers/</strong> directory:</p> 524<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><?</span><span class="nx">php</span> 525 526<span class="k">class</span> <span class="nc">Upload</span> <span class="k">extends</span> <span class="nx">CI_Controller</span> <span class="p">{</span> 527 528 <span class="k">public</span> <span class="k">function</span> <span class="nf">__construct</span><span class="p">()</span> 529 <span class="p">{</span> 530 <span class="k">parent</span><span class="o">::</span><span class="na">__construct</span><span class="p">();</span> 531 <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">helper</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'form'</span><span class="p">,</span> <span class="s1">'url'</span><span class="p">));</span> 532 <span class="p">}</span> 533 534 <span class="k">public</span> <span class="k">function</span> <span class="nf">index</span><span class="p">()</span> 535 <span class="p">{</span> 536 <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'upload_form'</span><span class="p">,</span> <span class="k">array</span><span class="p">(</span><span class="s1">'error'</span> <span class="o">=></span> <span class="s1">' '</span> <span class="p">));</span> 537 <span class="p">}</span> 538 539 <span class="k">public</span> <span class="k">function</span> <span class="nf">do_upload</span><span class="p">()</span> 540 <span class="p">{</span> 541 <span class="nv">$config</span><span class="p">[</span><span class="s1">'upload_path'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'./uploads/'</span><span class="p">;</span> 542 <span class="nv">$config</span><span class="p">[</span><span class="s1">'allowed_types'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'gif|jpg|png'</span><span class="p">;</span> 543 <span class="nv">$config</span><span class="p">[</span><span class="s1">'max_size'</span><span class="p">]</span> <span class="o">=</span> <span class="mi">100</span><span class="p">;</span> 544 <span class="nv">$config</span><span class="p">[</span><span class="s1">'max_width'</span><span class="p">]</span> <span class="o">=</span> <span class="mi">1024</span><span class="p">;</span> 545 <span class="nv">$config</span><span class="p">[</span><span class="s1">'max_height'</span><span class="p">]</span> <span class="o">=</span> <span class="mi">768</span><span class="p">;</span> 546 547 <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'upload'</span><span class="p">,</span> <span class="nv">$config</span><span class="p">);</span> 548 549 <span class="k">if</span> <span class="p">(</span> <span class="o">!</span> <span class="nv">$this</span><span class="o">-></span><span class="na">upload</span><span class="o">-></span><span class="na">do_upload</span><span class="p">(</span><span class="s1">'userfile'</span><span class="p">))</span> 550 <span class="p">{</span> 551 <span class="nv">$error</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">'error'</span> <span class="o">=></span> <span class="nv">$this</span><span class="o">-></span><span class="na">upload</span><span class="o">-></span><span class="na">display_errors</span><span class="p">());</span> 552 553 <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'upload_form'</span><span class="p">,</span> <span class="nv">$error</span><span class="p">);</span> 554 <span class="p">}</span> 555 <span class="k">else</span> 556 <span class="p">{</span> 557 <span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">'upload_data'</span> <span class="o">=></span> <span class="nv">$this</span><span class="o">-></span><span class="na">upload</span><span class="o">-></span><span class="na">data</span><span class="p">());</span> 558 559 <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'upload_success'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span> 560 <span class="p">}</span> 561 <span class="p">}</span> 562<span class="p">}</span> 563<span class="cp">?></span> 564</pre></div> 565</div> 566</div> 567<div class="section" id="the-upload-directory"> 568<h3><a class="toc-backref" href="#id5">The Upload Directory</a><a class="headerlink" href="#the-upload-directory" title="Permalink to this headline">¶</a></h3> 569<p>You’ll need a destination directory for your uploaded images. Create a 570directory at the root of your CodeIgniter installation called uploads 571and set its file permissions to 777.</p> 572</div> 573<div class="section" id="try-it"> 574<h3><a class="toc-backref" href="#id6">Try it!</a><a class="headerlink" href="#try-it" title="Permalink to this headline">¶</a></h3> 575<p>To try your form, visit your site using a URL similar to this one:</p> 576<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nx">example</span><span class="o">.</span><span class="nx">com</span><span class="o">/</span><span class="nx">index</span><span class="o">.</span><span class="nx">php</span><span class="o">/</span><span class="nx">upload</span><span class="o">/</span> 577</pre></div> 578</div> 579<p>You should see an upload form. Try uploading an image file (either a 580jpg, gif, or png). If the path in your controller is correct it should 581work.</p> 582</div> 583</div> 584<div class="section" id="reference-guide"> 585<h2><a class="toc-backref" href="#id7">Reference Guide</a><a class="headerlink" href="#reference-guide" title="Permalink to this headline">¶</a></h2> 586<div class="section" id="initializing-the-upload-class"> 587<h3><a class="toc-backref" href="#id8">Initializing the Upload Class</a><a class="headerlink" href="#initializing-the-upload-class" title="Permalink to this headline">¶</a></h3> 588<p>Like most other classes in CodeIgniter, the Upload class is initialized 589in your controller using the <code class="docutils literal"><span class="pre">$this->load->library()</span></code> method:</p> 590<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'upload'</span><span class="p">);</span> 591</pre></div> 592</div> 593<p>Once the Upload class is loaded, the object will be available using: 594$this->upload</p> 595</div> 596<div class="section" id="setting-preferences"> 597<h3><a class="toc-backref" href="#id9">Setting Preferences</a><a class="headerlink" href="#setting-preferences" title="Permalink to this headline">¶</a></h3> 598<p>Similar to other libraries, you’ll control what is allowed to be upload 599based on your preferences. In the controller you built above you set the 600following preferences:</p> 601<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$config</span><span class="p">[</span><span class="s1">'upload_path'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'./uploads/'</span><span class="p">;</span> 602<span class="nv">$config</span><span class="p">[</span><span class="s1">'allowed_types'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'gif|jpg|png'</span><span class="p">;</span> 603<span class="nv">$config</span><span class="p">[</span><span class="s1">'max_size'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'100'</span><span class="p">;</span> 604<span class="nv">$config</span><span class="p">[</span><span class="s1">'max_width'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'1024'</span><span class="p">;</span> 605<span class="nv">$config</span><span class="p">[</span><span class="s1">'max_height'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'768'</span><span class="p">;</span> 606 607<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span clas…
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