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 = '/\w{7}/m'; $str = 'E4A5Y8E JQIU56G S91ED8F ZZ9850H ZPPMYA9 J2OXGG0 X0E 0S0 9CF0ZJG LTZTBLL TEZPPN7 UD1UBM9 TII6VD6 BMZ90JF VE6NLYJ VACU01D 8SUDAFE RQ8EFOI 08C97PD 3LB58FW XQC2RW9 HEJ79FK 5FEJ81D 149EW6B 9KSPVLH LTUNC3S HN50KLO 8NXO6VL 4AZIQB8 U3L0TMV 044V0UG EICE3TP 7Q7SC7Z L86UAT3 JQYQLW0 MOEJCMZ 1AGVGOO MPO18T0 QJMJ5TN XJUEMLC 8JOANNN 0FIIIA1 QXZN03D WAM 4BI R0A 0S0 XUNFEAD 2KLDUOC RHG NMK M0P0XQS D4J8MMC X0E-1C0 J5L1KKU EI2JTNY BQ5LL52 1G6IL0L JNF7KGE 1U1HSTG OVJIO0H U7X0ZTO V98C18U MNPDFAA JRYV6I1 CSU29TX 2YLCS0E IIPIOSN V4W-1B9 U7HUEWN AKUVDLL IL2H9H3 G3ON4LY V4W 1A4 UZSR5YK SDC2A06 IEZJCH3 UABPVDJ NBXDBQ5 17HR851 E1CZAGC WFJ72DU ANZ0JXG YHA9M3X HMDV5ER S3PTFHM ZZ6WYSA IY99JD8 P7UVP4Z NQ283P9 LELIDPT R6M 0A5 R0G 0B2 9MI2DV0 MWACX9X X0E 0H0 I7GHXN8 E063NU0 DLV7WF6 5ZTM1LL QMEFANR CYNVB4S 8W2LHCK V4W 0A4 HCRQ4GZ LIJCLYP OECYFT4 V4W 1B6 7SRZUGW VBUHQ3B J5YST0B R6M 0A3 0OQCULR BG7JIMT M0JFKE7 J6LAMJ9 WNRUDD1 7OOZITH 3ML8MD3 94IPNLE W55SJH0 81XXMCE 97JZS9U NXB31OU Y4EDFZ1 9NGKXLW JJ7X46J CWU3CJM 8D9OYOP 3ZZV975 HTVJV1C MENOU7S SRKBGUN 0MONC6T MS6O469 IUVOYQ9 25RDXZV D99LO98 GKK3H2O PDHJD5B 2KM3K5W AJIIK4L BD9A24I UU32Y03 RCA4C86 0H4BBVG 8355956 V4W 1A7 RW9JLNP ZQ2YMH0 71YCQRC 4ZUNJ7Q 152REQB 4NQR40P 6310AX1 3QC0AL6 8HN6COW R5R1SW7 B8NPGEX 0ITC8M5 TE09NQX DCDUSQU 61JDWMA X0E 0B0 V4W 1A5 R0G 1C0 Z05290B SDFDJB7 1AIQYRC F5Q3TO4 ABWG8R7 8BHF4J5 176AKXX U12T0US 6AO46QD XQNEDH4 R0G 0B0 4HDUV2H 6M3F27U 900YSOA QZKU6WK O85SHCL NG6K7CE 47BOY8N 7PU2R3W 2UQ CIC 1WJ7V4F QKPWPZV VHVVXJT 7YTZW6D 609X0LY R6M 0A6 3QA1UTG P4NP0VS 8RTG25F 2V7KTWW 31FC5QQ R0G 0Z0 V4W 1B8 MZ337WC 6BM4ASC QXSKH3R I0Q63JL 73QEDO9 MIPJB4E 5211K66 4PVXK85 DN1NRBS RCKEAST 8PAFPN0 AMDE4EM 5RX2U4F CXC4HGU UJZAE15 JMUL6Q6 VI7T9R4 SJF31CG L5R8RQB CQ74GTH B5B26SC V4W 1C8 002XEHG UIVMXD3 59U220R R6M-0A1 LASUZGV 9N984BZ X0YAXJ7 NU55569 G6CMXRU INI41IE R0A 0L0 EDOLTZT 0ZJ2JOI J1LFVQP IBHW7BH I7LMSXR V4W 1A3 2OQJYMM 8TSW5J1 EQ6OIPV 34CVVKW RCAY7SH V4W 1A8 YSXBLN0 G26XHHE V4W 0A5 DIBM8LW T0E4Z3N X031ZWH Y33IVCB S9R58C4 TC3Q07B NBYVGSB V4W 1C4 XBLIU0F H92UX8N GUGQUKQ PY2NFZ0 4Q7OGZP Z5VGDWY X0E 0G0 YEAJD6D R6M 0A4 8H3UBVS 317HCXF FWDF2UW P40H72D OWD3KVB 8IGB94X JFLPI05 OCN91ZQ XC8FMGC 0O1KOGN 684TESU Y0WSZ15 RSKECBM Y488MYL DJLRJE2 GA6EI1D C7U G3O RV2C62C XX1IFWW S5EU716 K3R8V0P L6NHJVQ R45G9SH O8W0UVF FUX7H6P 5NUIL90 T4ACNYK I3S5QWJ LLSKBDS 5R7W88H RUTNJXA JEYRIN4 O62OG44 DAMW7YJ ESC6IL0 85ZTRKO LFN4LNG 7N4352T DV5EG89 93OSFNO 50U33CF J0SBCNC Q77FUS0 ON2L7YC GOVRTWB BCN4RCL RX2NTJW 99Q5M52 V4W 1C5 DH26PS0 J19CBEA J0QDH03 D1X NOO X0E 0V0 I7TXLJZ 53BNU19 MZEW2AX 6JFABO4 ZJG3J5D X0E 0Z0 B4W4YMB 37UNJ9A 6R66IVX 5UQPTB9 R0G 0Y0 YF7JP8G 48XX1EL WCUYX4I 762IWZ4 23NBY1L 3G6XU4P GJVNEHC X0E 0J0 B2HO1JN CKU8PG7 TG2N6C9 KQO4T5I 6CXZ92J WW0KB8J SY5FC2W XAZJKHA 2QGMNM4 0WI2R0U X0E 0A0 8KW93VI BTNXNDQ 2CY7493 D97IWVC ME40FWL EZZX50J X0E 1L0 69JN5XN G7OZFBG GYF46SY XD3VPQW K5MWQB4 6LTEOO8 VAD9J5F 5GZARVT E3ZY8D8 VWP9PCP QREOACD R0G 0C0 4B8394Q R0G 0J0 V4W 1C3 3ZHVFCJ 1RFMTBM DFCVUEW 5R7D8AT RAHP4EF 5L45FTJ XE1JZPD PKTEPQ7 XDLSOVN DIYPIK4 DI6JVL5 76QZC9V LZ595ML U4H9L7V 4SRWVWC HGMZGKU 7SNFBJN UG0DOTK KH3UNP9 KBKMAY8 U1I95QA Y379SYY J7OAGHN VE9IBPR SADNELB 23CUB7K PJ580EL EZIUU2R Q69N154 5WJ0KFU 3IW1XB3 0TPI8A7 3OUKYEQ YRQWNYJ K628FQ8 N4I3R5Z CNGSW93 KDSIE58 4M041Z9 6ERUKDG 7V02JFY JJO2659 2M6T5JY O23AODX V4W-1B7 6RGDNY9 4Q28NH3 XL5K6PV X0E-0T0 ZE6NMO3 N3GQGF1 PN7I207 RTDYA1T G8DEBKY GRQPYCL R0G 0B1 R0G 0V0 4S38X85 QF3DGDG R0G 1H0 8UXUQ42 HUXFTN5 V77YGDP 1V3TMD1 JUGVD3E 9CU0UYP 77PV8GD IN7450T I4K1DVJ P1ODTUX FP71TWS JF8NM06 UY6E4Q8 EJEH7OD V4W 1A6 9PNLTCM LG8HHPJ SP4VDPY 73TWCLI HB93P9P BLSCGV6 DDJAU2B 23RMY67 CK2OVCM UPC8706 T5VX87C V4W 1C7 V2WAN42 R0G 0T0 HGZ0588 JT8GX26 2IQKV9Q 92QSQSM S3I6CQ5 7LJSVTK GT5PFMQ L2I1E81 X099GUY P5X8099 V4W 0A7 HKAJO79 SOCLKT7 4WYNHOK SU05A4G BRIUMJJ 5MX70VS R0G 1E0 W5L0XE6 I3B9LMP NCIIXAI BAZRO7U 8U3T8IL OLX0JQG 1JFA5H9 2KNXFL0 R6M 0A2 09LP9BP 9G2CD8P UT96V7L Y9TGDYM BXBM4AG 65BHK2B KW31STU 9KWT5ZS X0E 1N0 THDX4GH CYHCNSS TILS0FE KLSJNQU 029JF4T 3IIVD7J XWV92SX Z4WB33S K6RXPCY UKPNO5B J2JIJ2I C1O1B2C 7SXC9K5 JGJOG2Y 2BDQ4MZ W6KS7KE UL7DA6I WEEXBD2 XORJDFL BK9I7IN WV0LAJK J7GVG6Y SNM4AI8 PDH6U4P UROWD79 U7SDK3M X0E 0K0 G92VTV2 YMJUGSY F01DYMN 6ZNEPX4 Z9SXBXB 9FSXWX8 CF6SIMP N8QKPVE V4W 1C6 ZA55B0H VMW7IUY K0NL3I7 R66IH8L BK8FTYG LSSYTXM DPP3EW3 V4W 0A6 O8TD058 LD0F8LQ LI3TOEA JQNH0V9 7CI0LM3 7SEFJH1 QK5PV2Z 4QNKDOZ T6P8KL4 16YXV9F 0WQFFMR D41BFC6 GT0N7VQ NQCOM7Z FXAYI5U J8RJRCF A5T2LZ8 49ABK7Q'; 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