Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

$re = '/<div\sid=\"olpProduct[\s\S]*?<div[\s\S]*?<div[\s\S]*?<a\shref=\"[\s\S]*?\/\/www.amazon.com\/[\s\S]*?\/[\s\S]*?\/(.*?)\/ref=olp/m'; $str = '<div id="olpProduct" class="a-section a-spacing-none"> <div class="a-section a-spacing-mini"> <div class="a-section a-spacing-mini"> ‹ <a href="https://www.amazon.com/Keds-Womens-Chillax-Laceless-Sneaker/dp/B00MC3R3M6/ref=olp_product_details?_encoding=UTF8&amp;me=" id="olpDetailPageLink">Return to product information</a> <i class="a-icon a-icon-text-separator" role="img"></i> Every purchase on Amazon.com is protected by an <a href="/gp/help/customer/display.html/ref=olp_wa_1?ie=UTF8&amp;nodeId=537868&amp;pop-up=1" id="olpAZGuarantee" target="AmazonHelp" onclick="return amz_js_PopWin(\'/gp/help/customer/display.html/ref=olp_wa_1?ie=UTF8&amp;nodeId=537868&amp;pop-up=1\',\'AmazonHelp\',\'width=400,height=400,resizable=1,scrollbars=1,toolbar=1,status=1\');">A-to-z guarantee</a>. <i class="a-icon a-icon-text-separator" role="img"></i> Feedback on this page? <a class="a-link-normal olpFeedbackLink" href="/forms/33ec5bb5-b0aa-4730-9bba-9b346c8d2499"> Tell us what you think </a> </div> <div class="a-fixed-left-grid a-spacing-base"><div class="a-fixed-left-grid-inner" style="padding-left:170px"> <div id="olpProductImage" class="a-text-center a-fixed-left-grid-col a-col-left" style="width:170px;margin-left:-170px;float:left;"> <a class="a-link-normal" href="https://www.amazon.com/Keds-Womens-Chillax-Laceless-Sneaker/dp/B00MC3R3M6/ref=olp_product_details?_encoding=UTF8&amp;me="> <img alt="Return to product information" src="https://images-na.ssl-images-amazon.com/images/I/41p2f8xA8TL._SS160_.jpg"> </a> </div> <div id="olpProductDetails" class="a-fixed-left-grid-col a-col-right" style="padding-left:0%;float:left;"> <h1 class="a-size-large a-spacing-none" role="main"> <div class="a-section a-spacing-none olpSubHeadingSection"> <span class="a-size-base a-color-secondary"> </span> </div> Keds Women\'s Chillax Washed Laceless Slip-On Sneaker, Taupe, 8 M US </h1> <div id="olpProductByline" class="a-section a-spacing-mini"> by Keds </div> <div class="a-section a-spacing-small"> <span class="offerListingPageB00MC3R3M6"> <span class="a-declarative" data-action="a-popover" data-a-popover="{&quot;closeButton&quot;:&quot;false&quot;,&quot;max-width&quot;:&quot;700&quot;,&quot;position&quot;:&quot;triggerBottom&quot;,&quot;url&quot;:&quot;/review/widgets/average-customer-review/popover/ref=acr_offerlistingpage_popover?ie=UTF8&amp;asin=B00MC3R3M6&amp;contextId=offerListingPage&amp;ref=acr_offerlistingpage_popover&quot;}"> <a href="javascript:void(0)" class="a-popover-trigger a-declarative"> </a><a class="a-link-normal a-text-normal" href="https://www.amazon.com/product-reviews/B00MC3R3M6/ref=acr_offerlistingpage_text?ie=UTF8&amp;showViewpoints=1"> <i class="a-icon a-icon-star a-star-4-5"><span class="a-icon-alt">4.3 out of 5 stars</span></i> </a> <i class="a-icon a-icon-popover"></i> </span> <span class="a-letter-space"></span> <span class="a-size-small"> <a class="a-link-normal" href="https://www.amazon.com/product-reviews/B00MC3R3M6/ref=acr_offerlistingpage_text?ie=UTF8&amp;showViewpoints=1"> 1,015 customer reviews </a> </span> </span> <i class="a-icon a-icon-text-separator" role="img"></i> <style type="text/css"> #auiswfText:hover, .emailImg:hover, .tafSocial:hover{ text-decoration : none !important; } #tellafriendAUI .emailtext, #tellafriendAUI .emailImg, #tellafriendAUI .tafSocial { padding : 0px !important; margin : 0px !important; text-decoration : none !important; } </style> <span id="tellafriendAUI"> <span class="a-declarative" data-action="a-modal" data-a-modal="{&quot;width&quot;:450,&quot;popoverLabel&quot;:&quot;Share this via Email&quot;,&quot;name&quot;:&quot;taf-aui&quot;,&quot;url&quot;:&quot;/gp/taf/share.html/ref=cm_sw_p_view_ol_4CVhCbJV9Y2JE?ie=UTF8&amp;ASIN=B00MC3R3M6&amp;action=share&amp;contentID=B00MC3R3M6&amp;contentName=offer%20listing%20page&amp;contentType=offer_page&amp;contentURI=%2Fgp%2Foffer-listing%2FB00MC3R3M6&amp;emailTemplate=%2Fgp%2Fpdp%2Ftaf%2Femail%2Fshare-offer-listing-page&amp;placementID=ol_4CVhCbJV9Y2JE&amp;ref=cm_sw_p_view_ol_4CVhCbJV9Y2JE&amp;showSocialSites=1&amp;site=email&amp;tafAUI=1&amp;titleText=Amazon.com%3A%20Buying%20Choices%3A%20Keds%20Women%27s%20Chillax%20Washed%20Laceless%20Slip-On%20Sneaker%2C%20Taupe%2C%208%20M%20US&amp;view=popup&quot;,&quot;ajaxFailMsg&quot;:&quot;Sorry, content is not available. &quot;,&quot;header&quot;:&quot;Share this via Email&quot;,&quot;cache&quot;:&quot;false&quot;}" id="swfDeclarative"> <a id="auiswfText" class="a-link-normal emailtext" title="Share via e-mail" href="/gp/taf/share.html/ref=cm_sw_l_view_ol_4CVhCbJV9Y2JE?ie=UTF8&amp;ASIN=B00MC3R3M6&amp;action=share&amp;contentID=B00MC3R3M6&amp;contentName=offer%20listing%20page&amp;contentType=offer_page&amp;contentURI=%2Fgp%2Foffer-listing%2FB00MC3R3M6&amp;emailTemplate=%2Fgp%2Fpdp%2Ftaf%2Femail%2Fshare-offer-listing-page&amp;placementID=ol_4CVhCbJV9Y2JE&amp;ref=cm_sw_l_view_ol_4CVhCbJV9Y2JE&amp;showSocialSites=1&amp;site=email&amp;tafAUI=1&amp;titleText=Amazon.com%3A%20Buying%20Choices%3A%20Keds%20Women%27s%20Chillax%20Washed%20Laceless%20Slip-On%20Sneaker%2C%20Taupe%2C%208%20M%20US&amp;view=standalone"> <span class="shareTextAUI">Share</span><span class="a-letter-space"></span> </a> <a id="auiSwfEmail" class="a-link-normal emailImg" title="Share via e-mail" href="#"> <i class="a-icon a-icon-share-email" role="img"></i><span class="a-letter-space"></span> </a> </span> <a id="auiSwfFb" class="a-link-normal tafSocial" title="Share on Facebook" href="/gp/taf/share.html/ref=fa?ie=UTF8&amp;=&amp;ASIN=B00MC3R3M6&amp;action=share&amp;contentID=B00MC3R3M6&amp;contentName=offer%20listing%20page&amp;contentType=offer_page&amp;contentURI=%2Fgp%2Foffer-listing%2FB00MC3R3M6&amp;imageURL=&amp;placementID=ol&amp;reftagSuffix=&amp;site=facebook&amp;titleText=Amazon.com%3A%20Buying%20Choices%3A%20Keds%20Women%27s%20Chillax%20Washed%20Laceless%20Slip-On%20Sneaker%2C%20Taupe%2C%208%20M%20US"> <span class="windowParams" data-network="facebook" data-height="400" data-width="700"></span> <i class="a-icon a-icon-share-facebook" role="img"></i><span class="a-letter-space"></span> </a> <a id="auiSwfTw" class="a-link-normal tafSocial" title="Share on Twitter" href="/gp/taf/share.html/ref=tw?ie=UTF8&amp;=&amp;ASIN=B00MC3R3M6&amp;action=share&amp;contentID=B00MC3R3M6&amp;contentName=offer%20listing%20page&amp;contentType=offer_page&amp;contentURI=%2Fgp%2Foffer-listing%2FB00MC3R3M6&amp;imageURL=&amp;placementID=ol&amp;reftagSuffix=&amp;site=twitter&amp;titleText=Amazon.com%3A%20Buying%20Choices%3A%20Keds%20Women%27s%20Chillax%20Washed%20Laceless%20Slip-On%20Sneaker%2C%20Taupe%2C%208%20M%20US"> <span class="windowParams" data-network="twitter" data-height="400" data-width="700"></span> <i class="a-icon a-icon-share-twitter" role="img"></i><span class="a-letter-space"></span> </a> </span> <script language="JavaScript" type="text/JavaScript"> P.when(\'A\',\'jQuery\').execute(function(A,$) { $(\'.tafSocial\').unbind(\'click\').click(function() { var windowParams = $(this).children(\'.windowParams\'); var height = windowParams.data("height"); var width = windowParams.data("width"); window.open(this.href, "_blank", "location=yes,width=" + width +",height=" + height); return false; }); A.on.load(function () { var hashValue = window.location.hash; var hashIndex; var swfHashValue = "_swftext_Swf"; hashIndex = hashValue.indexOf(swfHashValue); if (hashValue != "" && hashIndex > -1 && typeof(window.swfPopUpShown) === \'undefined\') { $("#auiswfText").click(); window.swfPopUpShown = 1; } }); }); </script> </div> <div id="variationsTwister" class="a-section a-spacing-mini"> <div class="a-section a-spacing-micro"> <span class="a-size-base">Size:</span> <span class="a-size-base a-text-bold"></span> </div> <span class="a-dropdown-container"><select name="" autocomplete="off" data-a-native-class="olpTwisterDropdown" tabindex="-1" class="a-native-dropdown a-spacing-small olpTwisterDropdown"> <option value="/gp/offer-listing/B00NNA39IE/ref=olp_twister_all?ie=UTF8&amp;mv_color_name=3&amp;mv_size_name=all"> Lowest offer for each </option> <option value="/gp/offer-listing/B00MC3QSKO/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=3&amp;mv_size_name=0"> 5 M US </option> <option value="/gp/offer-listing/B00MC3QU1G/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=3&amp;mv_size_name=1"> 5.5 M US </option> <option value="/gp/offer-listing/B00MC3QX72/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=3&amp;mv_size_name=2"> 6 M US </option> <option value="/gp/offer-listing/B00MC3QYQC/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=3&amp;mv_size_name=3"> 6.5 M US </option> <option value="/gp/offer-listing/B00MC3R0PQ/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=3&amp;mv_size_name=4"> 7 M US </option> <option value="/gp/offer-listing/B00MC3R23Q/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=3&amp;mv_size_name=5"> 7.5 M US </option> <option value="/gp/offer-listing/B00MC3R3M6/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=3&amp;mv_size_name=6" selected=""> 8 M US </option> <option value="/gp/offer-listing/B00MC3R6LO/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=3&amp;mv_size_name=7"> 8.5 M US </option> <option value="/gp/offer-listing/B00MC3R9IY/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=3&amp;mv_size_name=8"> 9 M US </option> <option value="/gp/offer-listing/B00MC3RBE6/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=3&amp;mv_size_name=9"> 9.5 M US </option> <option value="/gp/offer-listing/B00MC3RCPY/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=3&amp;mv_size_name=10"> 10 M US </option> </select><span tabindex="-1" id="olpTwisterDropdownAUI" class="a-button a-button-dropdown a-button-small a-spacing-small" style="min-width: 0.583333%;"><span class="a-button-inner"><span class="a-button-text a-declarative" data-action="a-dropdown-button" role="button" tabindex="0" aria-hidden="true"><span class="a-dropdown-prompt"> 8 M US </span></span><i class="a-icon a-icon-dropdown"></i></span></span></span> <div class="a-section a-spacing-micro"> <span class="a-size-base">Color:</span> <span class="a-size-base a-text-bold">Taupe</span> </div> <ul class="a-unordered-list a-nostyle a-button-list a-declarative a-button-toggle-group a-horizontal a-spacing-small" role="radiogroup" data-action="a-button-group"> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-normal a-button-thumbnail a-button-toggle" id="a-autoid-0"><span class="a-button-inner"><a href="/gp/offer-listing/B0002MB0DM/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=0&amp;mv_size_name=6" class="a-button-text" role="button" id="a-autoid-0-announce"> <img alt="" src="https://images-na.ssl-images-amazon.com/images/I/41jl1EwZjHL._SX35_SY35_CR,0,0,35,35_.jpg" height="35" width="35"> </a></span></span> </span></li> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-normal a-button-thumbnail a-button-toggle" id="a-autoid-1"><span class="a-button-inner"><a href="/gp/offer-listing/B005BFV1DO/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=1&amp;mv_size_name=6" class="a-button-text" role="button" id="a-autoid-1-announce"> <img alt="" src="https://images-na.ssl-images-amazon.com/images/I/41XqEgaqwtL._SX35_SY35_CR,0,0,35,35_.jpg" height="35" width="35"> </a></span></span> </span></li> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-normal a-button-thumbnail a-button-toggle" id="a-autoid-2"><span class="a-button-inner"><a href="/gp/offer-listing/B00MC3SFXW/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=2&amp;mv_size_name=6" class="a-button-text" role="button" id="a-autoid-2-announce"> <img alt="" src="https://images-na.ssl-images-amazon.com/images/I/41cNhnckTFL._SX35_SY35_CR,0,0,35,35_.jpg" height="35" width="35"> </a></span></span> </span></li> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-selected a-button-thumbnail a-button-toggle" id="a-autoid-3"><span class="a-button-inner"><a href="/gp/offer-listing/B00MC3R3M6/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=3&amp;mv_size_name=6" class="a-button-text" role="button" id="a-autoid-3-announce"> <img alt="" src="https://images-na.ssl-images-amazon.com/images/I/41p2f8xA8TL._SX35_SY35_CR,0,0,35,35_.jpg" height="35" width="35"> </a></span></span> </span></li> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-normal a-button-thumbnail a-button-toggle" id="a-autoid-4"><span class="a-button-inner"><a href="/gp/offer-listing/B011SBR9PS/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=4&amp;mv_size_name=6" class="a-button-text" role="button" id="a-autoid-4-announce"> <img alt="" src="https://images-na.ssl-images-amazon.com/images/I/311Xw94d26L._SX35_SY35_CR,0,0,35,35_.jpg" height="35" width="35"> </a></span></span> </span></li> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-normal a-button-thumbnail a-button-toggle" id="a-autoid-5"><span class="a-button-inner"><a href="/gp/offer-listing/B07FYS34S4/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=5&amp;mv_size_name=6" class="a-button-text" role="button" id="a-autoid-5-announce"> <img alt="" src="https://images-na.ssl-images-amazon.com/images/I/41r4qvtmEkL._SX35_SY35_CR,0,0,35,35_.jpg" height="35" width="35"> </a></span></span> </span></li> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-normal a-button-thumbnail a-button-toggle" id="a-autoid-6"><span class="a-button-inner"><a href="/gp/offer-listing/B00MC3TVSK/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=6&amp;mv_size_name=6" class="a-button-text" role="button" id="a-autoid-6-announce"> <img alt="" src="https://images-na.ssl-images-amazon.com/images/I/31YEDbIcNwL._SX35_SY35_CR,0,0,35,35_.jpg" height="35" width="35"> </a></span></span> </span></li> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-normal a-button-thumbnail a-button-toggle" id="a-autoid-7"><span class="a-button-inner"><a href="/gp/offer-listing/B016W1Z1RC/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=7&amp;mv_size_name=6" class="a-button-text" role="button" id="a-autoid-7-announce"> <img alt="" src="https://images-na.ssl-images-amazon.com/images/I/41plM8TSFBL._SX35_SY35_CR,0,0,35,35_.jpg" height="35" width="35"> </a></span></span> </span></li> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-normal a-button-thumbnail a-button-toggle" id="a-autoid-8"><span class="a-button-inner"><a href="/gp/offer-listing/B0007L7WPS/ref=olp_twister_child?ie=UTF8&amp;mv_color_name=8&amp;mv_size_name=6" class="a-button-text" role="button" id="a-autoid-8-announce"> <img alt="" src="https://images-na.ssl-images-amazon.com/images/I/41NGM8gp7hL._SX35_SY35_CR,0,0,35,35_.jpg" height="35" width="35"> </a></span></span> </span></li> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-disabled a-button-thumbnail a-button-toggle" id="a-autoid-9"><span class="a-button-inner"><input disabled="disabled" class="a-button-input" type="submit" aria-labelledby="a-autoid-9-announce"><span class="a-button-text" aria-hidden="true" id="a-autoid-9-announce"> <img alt="" src="https://images-na.ssl-images-amazon.com/images/I/41WBKxWvoLL._SX35_SY35_CR,0,0,35,35_.jpg" height="35" width="35"> </span></span></span> </span></li> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-disabled a-button-thumbnail a-button-toggle" id="a-autoid-10"><span class="a-button-inner"><input disabled="disabled" class="a-button-input" type="submit" aria-labelledby="a-autoid-10-announce"><span class="a-button-text" aria-hidden="true" id="a-autoid-10-announce"> <img alt="" src="https://images-na.ssl-images-amazon.com/images/I/41ap6ahxMRL._SX35_SY35_CR,0,0,35,35_.jpg" height="35" width="35"> </span></span></span> </span></li> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-disabled a-button-thumbnail a-button-toggle" id="a-autoid-11"><span class="a-button-inner"><input disabled="disabled" class="a-button-input" type="submit" aria-labelledby="a-autoid-11-announce"><span class="a-button-text" aria-hidden="true" id="a-autoid-11-announce"> <img alt="" src="https://images-na.ssl-images-amazon.com/images/I/41QD5K54hPL._SX35_SY35_CR,0,0,35,35_.jpg" height="35" width="35"> </span></span></span> </span></li> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-disabled a-button-thumbnail a-button-toggle" id="a-autoid-12"><span class="a-button-inner"><input disabled="disabled" class="a-button-input" type="submit" aria-labelledby="a-autoid-12-announce"><span class="a-button-text" aria-hidden="true" id="a-autoid-12-announce"> <img alt="" src="https://images-na.ssl-images-amazon.com/images/I/31qtQ78OWiL._SX35_SY35_CR,0,0,35,35_.jpg" height="35" width="35"> </span></span></span> </span></li> <li class="a-spacing-mini"><span class="a-list-item"> <span class="a-button a-button-normal a-button-toggle" id="a-autoid-13"><span class="a-button-inner"><a href="/gp/offer-listing/B00NNA39IE/ref=olp_twister_all?ie=UTF8&amp;mv_color_name=all&amp;mv_size_name=6" class="a-button-text" role="button" id="a-autoid-13-announce"> Lowest offer for each </a></span></span> </span></li> </ul> </div> <div class="twisterDivider"></div> </div> </div></div> </div> </div>'; preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0); // Print the entire match result var_dump($matches);

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php