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

Substitution

Processing...

Code Generator

Language

Generated Code

$re = '/[\s]+<\/coordinates>[\s\S]+?<coordinates>[\s]+/m'; $str = '<?xml version="1.0" encoding="UTF-8"?> <kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2" xmlns:kml="http://www.opengis.net/kml/2.2" xmlns:atom="http://www.w3.org/2005/Atom"> <Document> <name>Example.kml</name> <Style id="s_ylw-pushpin_hl"> <IconStyle> <scale>1.3</scale> <Icon> <href>http://maps.google.com/mapfiles/kml/pushpin/ylw-pushpin.png</href> </Icon> <hotSpot x="20" y="2" xunits="pixels" yunits="pixels"/> </IconStyle> <LineStyle> <color>ffff00ff</color> <width>4</width> </LineStyle> </Style> <StyleMap id="m_ylw-pushpin"> <Pair> <key>normal</key> <styleUrl>#s_ylw-pushpin</styleUrl> </Pair> <Pair> <key>highlight</key> <styleUrl>#s_ylw-pushpin_hl</styleUrl> </Pair> </StyleMap> <Style id="s_ylw-pushpin"> <IconStyle> <scale>1.1</scale> <Icon> <href>http://maps.google.com/mapfiles/kml/pushpin/ylw-pushpin.png</href> </Icon> <hotSpot x="20" y="2" xunits="pixels" yunits="pixels"/> </IconStyle> <LineStyle> <color>ffff00ff</color> <width>4</width> </LineStyle> </Style> <Folder> <name>Example</name> <open>1</open> <Placemark> <name>Untitled Path</name> <styleUrl>#m_ylw-pushpin</styleUrl> <LineString> <tessellate>1</tessellate> <coordinates> 1.010794386877401,44.51240983736842,0 0.6286744887979312,47.46969863211312,0 4.198175193521713,47.66272708685459,0 4.47650525274385,45.32855385904715,0 </coordinates> </LineString> </Placemark> <Placemark> <name>Untitled Path</name> <styleUrl>#m_ylw-pushpin</styleUrl> <LineString> <tessellate>1</tessellate> <coordinates> 8.904276108011693,51.53463622874661,0 9.185337211508118,53.24757135457648,0 12.82197202867711,52.85957127892767,0 9.326760498064647,50.5694391186729,0 </coordinates> </LineString> </Placemark> <Placemark> <name>Untitled Path</name> <styleUrl>#m_ylw-pushpin</styleUrl> <LineString> <tessellate>1</tessellate> <coordinates> -0.8457721243506866,53.25357789001806,0 -2.495344342945436,52.51894778278026,0 -1.832838168564855,51.68947925151446,0 -0.004852378987588724,51.90053296811562,0 </coordinates> </LineString> </Placemark> </Folder> </Document> </kml> '; $subst = " "; $result = preg_replace($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