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PORegex not returning matches from database, but works fine when manually put in to input string
 

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  1. PORegex not returning matches from database, but works fine when manually put in to input string
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    <p>I know I asked a question yesterday about regex (<a href="https://stackoverflow.com/questions/16429808/regex-not-returning-any-matches-independent-of-expression-used">Regex not returning any matches independent of expression used</a>). The code that I got yesterday works fine as long as I put all the URL:s into the input string manually, but when I load it from my database I get zero matches. </p> <p><strong>Functioning code</strong></p> <pre><code>$url = "http://www.ltblekinge.se/download/18.9c16a31109c04a3e880003750 http://one.com www.two.com http://yourad.io"; preg_match_all('/((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&amp;=\+\$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&amp;=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&amp;;%@.\w_]*)#?(?:[.\!\/\\w]*))?)/', $url, $matches); print_r($matches[1]); </code></pre> <p>gives the following output:</p> <pre><code>Array ( [0] =&gt; http://www.ltblekinge.se/download/18.9c16a31109c04a3e880003750 [1] =&gt; http://one.com [2] =&gt; www.two.com [3] =&gt; http://yourad.io ) </code></pre> <p><strong>Non functional code</strong></p> <pre><code>&lt;?php /*** mysql hostname ***/ $hostname = 'localhost'; /*** mysql username ***/ $username = 'root'; /*** mysql password ***/ $password = 'root'; try { $dbh = new PDO("mysql:host=$hostname;dbname=blankett", $username, $password); $dbh-&gt;exec('SET CHARACTER SET utf8'); $dbh-&gt;setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $stmt = $dbh-&gt;prepare("SELECT link_form FROM forms2"); $stmt-&gt;execute(); $url = $stmt-&gt;fetchAll(PDO::FETCH_ASSOC); preg_match_all('/((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&amp;=\+\$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&amp;=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&amp;;%@.\w_]*)#?(?:[.\!\/\\w]*))?)/', $url, $matches); if (preg_last_error() == PREG_NO_ERROR) { print 'There is no error.'; } else if (preg_last_error() == PREG_INTERNAL_ERROR) { print 'There is an internal error!'; } else if (preg_last_error() == PREG_BACKTRACK_LIMIT_ERROR) { print 'Backtrack limit was exhausted!'; } else if (preg_last_error() == PREG_RECURSION_LIMIT_ERROR) { print 'Recursion limit was exhausted!'; } else if (preg_last_error() == PREG_BAD_UTF8_ERROR) { print 'Bad UTF8 error!'; } else if (preg_last_error() == PREG_BAD_UTF8_ERROR) { print 'Bad UTF8 offset error!'; } print_r($matches); } catch(PDOException $e) { echo $e-&gt;getMessage(); } ?&gt; </code></pre> <p>gives me the output:</p> <pre><code>There is no error. </code></pre> <p>This makes me think there is something wrong with my input string, but I can no figure out what is wrong with it. This is what my input string looks like:</p> <pre><code>Array ( [0] =&gt; Array ( [link_form] =&gt; http://www.ltblekinge.se/download /18.9c16a31109c04a3e880003750/forskrivningsanvisn_rorelse_forflyttn ) [1] =&gt; Array ( [link_form] =&gt; http://www.ltdalarna.se/upload/vard_och_halsa/halso_och_sjukvarden/ldhjalpmedel/Hjalpmedelsguide/03Hjmhantering/Hantering%20av%20kostnader%20för%20hjälpmedel%20ver%202.pdf ) [2] =&gt; Array ( [link_form] =&gt; http://www.gotland.se/imcms/62373 ) [3] =&gt; Array ( [link_form] =&gt; http://www.hjalpnu.se/download/18.4fd9e13012a408581b980002702/bestallningsblankett.doc ) [4] =&gt; Array ( [link_form] =&gt; http://www.regionhalland.se/PageFiles/14881/Bil%20A%2013%20Förskrivning%20av%20hjälpmedel.pdf ) [5] =&gt; Array ( [link_form] =&gt; http://www.jll.se/download/18.5c5942f112d4af0bbaf80008216/Frågor+och+svar+-+brukare.pdf ) [6] =&gt; Array ( [link_form] =&gt; http://www.jll.se/download/18.5c5942f112d4af0bbaf80008218/Rådgivning+hjälpmedel.pdf ) [7] =&gt; Array ( [link_form] =&gt; http://www.jll.se/download/18.47d2594d12bccf68c3680001577/Definition+och+direktiv+egenansvar+och+hjä ) [8] =&gt; Array ( [link_form] =&gt; http://www.jll.se/download/18.2a18114134d5722c50800050/Fakturaunderlag+för+brukare+120112.pdf ) [9] =&gt; Array ( [link_form] =&gt; http://www.lj.se/info_files/infosida38484/lanevillkor_hjalpmedel.pdf ) [10] =&gt; Array ( [link_form] =&gt; http://www.lj.se/info_files/infosida38484/avvikelserapport.doc ) [11] =&gt; Array ( [link_form] =&gt; http://www.ltkronoberg.se/upload/Dokument/Halsa_och_vard/Hitta_ratt_i_varden/Funktionshinder/Hjalpmedel/Förskrivningsblankett.DOC ) [12] =&gt; Array ( [link_form] =&gt; https://www.nllplus.se/upload/IB/pv/hjpmk/blanketter/Särskild%20förskrivning.pdf ) [13] =&gt; Array ( [link_form] =&gt; https://www.nllplus.se/upload/IB/pv/hjpmk/Hjälpmedelsportalen/Lathund%20särskild%20förskrivning.doc ) [14] =&gt; Array ( [link_form] =&gt; http://www.skane.se/Public/HAB/Hjalpmedelshandbok/100-allmanna-riktlinjer.pdf ) [15] =&gt; Array ( [link_form] =&gt; http://www.slso.sll.se/upload/Hjalpmedel_Stockholm/Blanketter/Enstaka%20produkt%202012-12-04.doc ) [16] =&gt; Array ( [link_form] =&gt; http://www.liv.se/sidkat/4072/Regelverk%20OTA%20090205.pdf ) [17] =&gt; Array ( [link_form] =&gt; http://www.liv.se/sidkat/4072/Skrivelse%20gallande%20upphandling-05.doc ) [18] =&gt; Array ( [link_form] =&gt; http://www.liv.se/sidkat/4072/RemissOTA.pdf ) [19] =&gt; Array ( [link_form] =&gt; http://www.lvn.se/pagefiles/2548/fillistning/riktlinjer%20för%20förskrivning%20av%20hjälpmedel%20i%20landstinget%20västernorrland%20pdf.pdf ) [20] =&gt; Array ( [link_form] =&gt; http://www.lvn.se/pagefiles/12448/flödesschema%20ordnat%20införande%20produktgrupp_20111025.pdf ) [21] =&gt; Array ( [link_form] =&gt; http://www.lvn.se/PageFiles/6071/Blanketter/Beställningsblanketter/Beställning%20Medicintekniska%20hjälpmedel,%20120316.pdf ) [22] =&gt; Array ( [link_form] =&gt; http://www.lvn.se/PageFiles/6071/Blanketter/Beställningsblanketter/Bilaga%20B,%20hjälpmedel%20för%20stå%20och%20gå%20120313.pdf ) [23] =&gt; Array ( [link_form] =&gt; http://www.vgregion.se/sv/Omrade-Hjalpmedel/Har-du-en-ide-om-vad-vi-kan-gora-battre/Synpunkter-pa-Hjalpmedelscentralernas-sortiment/ ) [24] =&gt; Array ( [link_form] =&gt; http://www.vgregion.se/upload/Handbok%20för%20förskrivning%20av%20personliga%20hjälpmedel/Hjälpmedelsansökan%20Gbg%202011-02-22.doc ) [25] =&gt; Array ( [link_form] =&gt; http://www.orebroll.se/Files-sv/Örebro%20läns%20landsting/Vård%20och%20hälsa/Habilitering/Centrum%20för%20hjälpmedel/Förskrivarportal/Blanketter/Förskrivning%20av%20tekniska%20hjälpmedel.doc ) [26] =&gt; Array ( [link_form] =&gt; http://www.lio.se/Patientinformation/Hjalpmedel-och-handikappservice/Hjalpmedelsforskrivning/Forskrivningsratt-for-hjalpmedel/ ) [27] =&gt; Array ( [link_form] =&gt; http://www.lio.se/pages/37692/Behorighet%20bestallare%20landsting.pdf ) [28] =&gt; Array ( [link_form] =&gt; http://www.lio.se/pages/37692/behorighet%20Forskr%20landsting%2020090702.pdf ) ) There is no error. </code></pre> <p><strong>Question</strong> What is wrong with the input string and why is there no matches?</p>
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    1. USCœur
    1. USStenW
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    1. This table or related slice is empty.
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      1. PORegex not returning matches from database, but works fine when manually put in to input string
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      1. VTDownMod
    1. CO`$url` is an array.
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      1. PORegex not returning matches from database, but works fine when manually put in to input string
      1. USkapa
    2. COYes, does that mean that I can´t have an array of arrays?
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      1. USStenW
    3. COfrom: [prag_match_all](http://php.net/manual/en/function.preg-match-all.php) second parameter (subject) should be string,not array.
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      1. PORegex not returning matches from database, but works fine when manually put in to input string
      1. USBojan Kovacevic
 

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