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

/
/
gms

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

$re = '/^var (.*?Infos) = .*?data\s*: (.*?),\r*$/ms'; $str = ' var activeThreadsOverTimeInfos = { data: ["some", "activeThreadsOverTimeInfos", "data"], getOptions: function() { return { ... var timeVsThreadsInfos = { data: ["some", "timeVsThreadsInfos", "data"], getOptions: function() { return { ... var bytesThroughputOverTimeInfos = { data : {"result": {"minY": 0.0, "minX": 1.5931058173E12, "maxY": 14780.0, "series": [{"data": [[1.5931058186E12, 4010.0], [1.5931058196E12, 3990.0], [1.5931058175E12, 4120.0], [1.5931058185E12, 4090.0], [1.5931058195E12, 4120.0], [1.5931058205E12, 4340.0], [1.5931058184E12, 4230.0], [1.5931058194E12, 4350.0], [1.5931058204E12, 4010.0], [1.5931058173E12, 4010.0], [1.5931058224E12, 700.0], [1.5931058183E12, 3990.0], [1.5931058193E12, 4320.0], [1.5931058203E12, 4010.0], [1.5931058213E12, 4010.0], [1.5931058192E12, 4340.0], [1.5931058202E12, 4120.0], [1.5931058212E12, 4090.0], [1.5931058181E12, 4120.0], [1.5931058191E12, 4010.0], [1.5931058201E12, 4010.0], [1.5931058211E12, 4230.0], [1.593105818E12, 4350.0], [1.593105819E12, 4010.0], [1.59310582E12, 4010.0], [1.593105821E12, 3990.0], [1.5931058179E12, 4320.0], [1.5931058189E12, 4120.0], [1.5931058209E12, 4120.0], [1.5931058178E12, 4340.0], [1.5931058198E12, 4090.0], [1.5931058208E12, 4350.0], [1.5931058177E12, 4010.0], [1.5931058187E12, 4010.0], [1.5931058197E12, 4230.0], [1.5931058207E12, 4320.0], [1.5931058176E12, 4010.0], [1.5931058217E12, 270.0]], "isOverall": false, "label": "Bytes received per second", "isController": false}, {"data": [[1.5931058186E12, 9000.0], [1.5931058196E12, 14780.0], [1.5931058175E12, 8930.0], [1.5931058185E12, 9130.0], [1.5931058195E12, 9250.0], [1.5931058205E12, 9150.0], [1.5931058184E12, 9020.0], [1.5931058194E12, 9480.0], [1.5931058204E12, 9200.0], [1.5931058173E12, 5930.0], [1.5931058224E12, 0.0], [1.5931058183E12, 14780.0], [1.5931058193E12, 9430.0], [1.5931058203E12, 11110.0], [1.5931058213E12, 9000.0], [1.5931058192E12, 9150.0], [1.5931058202E12, 8930.0], [1.5931058212E12, 9130.0], [1.5931058181E12, 9250.0], [1.5931058191E12, 9200.0], [1.5931058201E12, 5930.0], [1.5931058211E12, 9020.0], [1.593105818E12, 9480.0], [1.593105819E12, 11110.0], [1.59310582E12, 9000.0], [1.593105821E12, 14780.0], [1.5931058179E12, 9430.0], [1.5931058189E12, 8930.0], [1.5931058209E12, 9250.0], [1.5931058178E12, 9150.0], [1.5931058198E12, 9130.0], [1.5931058208E12, 9480.0], [1.5931058177E12, 9200.0], [1.5931058187E12, 5930.0], [1.5931058197E12, 9020.0], [1.5931058207E12, 9430.0], [1.5931058176E12, 11110.0], [1.5931058217E12, 0.0]], "isOverall": false, "label": "Bytes sent per second", "isController": false}], "supportsControllersDiscrimination": false, "granularity": 100, "maxX": 1.5931058224E12, "title": "Bytes Throughput Over Time"}}, getOptions : function(){ return { series: { lines: { show: true }, points: { show: true } }, xaxis: { mode: "time", timeformat: getTimeFormat(this.data.result.granularity), axisLabel: getElapsedTimeLabel(this.data.result.granularity) , axisLabelUseCanvas: true, axisLabelFontSizePixels: 12, axisLabelFontFamily: \'Verdana, Arial\', axisLabelPadding: 20, }, yaxis: { axisLabel: "Bytes / sec", axisLabelUseCanvas: true, axisLabelFontSizePixels: 12, axisLabelFontFamily: \'Verdana, Arial\', axisLabelPadding: 20, }, legend: { noColumns: 2, show: true, container: \'#legendBytesThroughputOverTime\' }, selection: { mode: "xy" }, grid: { hoverable: true // IMPORTANT! this is needed for tooltip to // work }, tooltip: true, tooltipOpts: { content: "%s at %x was %y" } }; }, createGraph : function() { var data = this.data; var dataset = prepareData(data.result.series, $("#choicesBytesThroughputOverTime")); var options = this.getOptions(); prepareOptions(options, data); $.plot($("#flotBytesThroughputOverTime"), dataset, options); // setup overview $.plot($("#overviewBytesThroughputOverTime"), dataset, prepareOverviewOptions(options)); } }; // Bytes throughput Over Time function refreshBytesThroughputOverTime(fixTimestamps) { var infos = bytesThroughputOverTimeInfos; prepareSeries(infos.data); if(fixTimestamps) { fixTimeStamps(infos.data.result.series, -14400000); } if(isGraph($("#flotBytesThroughputOverTime"))){ infos.createGraph(); }else{ var choiceContainer = $("#choicesBytesThroughputOverTime"); createLegend(choiceContainer, infos); infos.createGraph(); setGraphZoomable("#flotBytesThroughputOverTime", "#overviewBytesThroughputOverTime"); $(\'#footerBytesThroughputOverTime .legendColorBox > div\').each(function(i){ $(this).clone().prependTo(choiceContainer.find("li").eq(i)); }); } } var responseTimesOverTimeInfos = { data: {"result": {"minY": 106.0, "minX": 1.5931058172E12, "maxY": 711.0, "series": [{"data": [[1.5931058181E12, 108.0], [1.5931058209E12, 107.0], [1.5931058195E12, 107.0]], "isOverall": false, "label": "createOrder", "isController": false}, {"data": [[1.5931058175E12, 107.0], [1.5931058202E12, 106.0], [1.5931058189E12, 107.0]], "isOverall": false, "label": "T02_ Login page", "isController": true}, {"data": [[1.5931058204E12, 220.0], [1.5931058191E12, 219.0], [1.5931058177E12, 226.0]], "isOverall": false, "label": "T03_ Login submit", "isController": true}, {"data": [[1.5931058186E12, 215.0], [1.5931058213E12, 213.0], [1.59310582E12, 214.0]], "isOverall": false, "label": "T05_ SignOff", "isController": true}, {"data": [[1.5931058201E12, 148.0], [1.5931058172E12, 320.0], [1.5931058187E12, 146.0]], "isOverall": false, "label": "T01_ Home page", "isController": true}, {"data": [[1.5931058196E12, 116.0], [1.5931058183E12, 135.0], [1.593105821E12, 130.0]], "isOverall": false, "label": "placeOrder", "isController": false}, {"data": [[1.5931058203E12, 112.0], [1.593105819E12, 112.0], [1.5931058176E12, 119.0]], "isOverall": false, "label": "viewAccount", "isController": false}, {"data": [[1.5931058198E12, 107.0], [1.5931058185E12, 107.0], [1.5931058212E12, 107.0]], "isOverall": false, "label": "signOff", "isController": false}, {"data": [[1.5931058175E12, 107.0], [1.5931058202E12, 106.0], [1.5931058189E12, 107.0]], "isOverall": false, "label": "signonForm", "isController": false}, {"data": [[1.5931058193E12, 107.0], [1.5931058179E12, 109.0], [1.5931058207E12, 107.0]], "isOverall": false, "label": "viewProduct", "isController": false}, {"data": [[1.5931058211E12, 108.0], [1.5931058197E12, 108.0], [1.5931058184E12, 107.0]], "isOverall": false, "label": "confirmOrder", "isController": false}, {"data": [[1.5931058224E12, 711.0]], "isOverall": false, "label": "JDBC Request", "isController": false}, {"data": [[1.5931058178E12, 107.0], [1.5931058205E12, 107.0], [1.5931058192E12, 108.0]], "isOverall": false, "label": "viewCategory", "isController": false}, {"data": [[1.5931058211E12, 666.0], [1.5931058197E12, 653.0], [1.5931058184E12, 674.0]], "isOverall": false, "label": "T04_ Create Order", "isController": true}, {"data": [[1.5931058204E12, 108.0], [1.5931058186E12, 108.0], [1.5931058173E12, 320.0], [1.5931058191E12, 107.0], [1.5931058201E12, 148.0], [1.5931058213E12, 106.0], [1.5931058177E12, 107.0], [1.59310582E12, 107.0], [1.5931058187E12, 146.0]], "isOverall": false, "label": "viewCatalog", "isController": false}, {"data": [[1.593105818E12, 108.0], [1.5931058208E12, 107.0], [1.5931058194E12, 107.0]], "isOverall": false, "label": "viewCart", "isController": false}, {"data": [[1.5931058217E12, 358.0]], "isOverall": false, "label": "OS Process Sampler", "isController": false}], "supportsControllersDiscrimination": true, "granularity": 100, "maxX": 1.5931058224E12, "title": "Response Time Over Time"}}, getOptions: function(){ return { series: { lines: { show: true }, points: { show: true } }, xaxis: { mode: "time", timeformat: getTimeFormat(this.data.result.granularity), axisLabel: getElapsedTimeLabel(this.data.result.granularity), axisLabelUseCanvas: true, axisLabelFontSizePixels: 12, axisLabelFontFamily: \'Verdana, Arial\', axisLabelPadding: 20, }, yaxis: { axisLabel: "Average response time in ms", axisLabelUseCanvas: true, axisLabelFontSizePixels: 12, axisLabelFontFamily: \'Verdana, Arial\', axisLabelPadding: 20, }, legend: { noColumns: 2, show: true, container: \'#legendResponseTimesOverTime\' }, selection: { mode: \'xy\' }, grid: { hoverable: true // IMPORTANT! this is needed for tooltip to // work }, tooltip: true, tooltipOpts: { content: "%s : at %x Average response time was %y ms" } }; }, createGraph: function() { var data = this.data; var dataset = prepareData(data.result.series, $("#choicesResponseTimesOverTime")); var options = this.getOptions(); prepareOptions(options, data); $.plot($("#flotResponseTimesOverTime"), dataset, options); // setup overview $.plot($("#overviewResponseTimesOverTime"), dataset, prepareOverviewOptions(options)); } }; // Response Times Over Time function refreshResponseTimeOverTime(fixTimestamps) { var infos = responseTimesOverTimeInfos; prepareSeries(infos.data); if(infos.data.result.series.length == 0) { setEmptyGraph("#bodyResponseTimeOverTime"); return; } if(fixTimestamps) { fixTimeStamps(infos.data.result.series, -14400000); } if(isGraph($("#flotResponseTimesOverTime"))){ infos.createGraph(); }else{ var choiceContainer = $("#choicesResponseTimesOverTime"); createLegend(choiceContainer, infos); infos.createGraph(); setGraphZoomable("#flotResponseTimesOverTime", "#overviewResponseTimesOverTime"); $(\'#footerResponseTimesOverTime .legendColorBox > div\').each(function(i){ $(this).clone().prependTo(choiceContainer.find("li").eq(i)); }); } }; var latenciesOverTimeInfos = { data: ["some", "latenciesOverTimeInfos", "data"], getOptions: function() { return { ... var connectTimeOverTimeInfos = { data: ["some", "connectTimeOverTimeInfos", "data"], getOptions: function() { return { ... '; $subst = "var $1 = {\n data: $1_data,"; $result = preg_replace($re, $subst, $str); echo "The result of the substitution is ".$result;

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