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
Processing...

Test String

Code Generator

Generated Code

$re = '/\[(?P<stanza_name>[0-9a-zA-Z-_\ ]*?)\](?P<text>.*?)\n\n/s'; $str = '[inv_records] search = index=apm_main eventtype=da_host sourcetype=snpm:ipact:kvp2 [equipment-InterfaceStatsLogRecord] search = eventtype=sam_events (ds=equipment.InterfaceStatsLogRecord OR ds=equipment.InterfaceAdditionalStats) [inv_avc] search = eventtype=inv_records source="/data/snpm/splunk/inventory/*_AVC_*" ACCESS_SERVICE_TECH_TYPE="*"\\ [inv_cvc] search = eventtype=inv_records source="/data/snpm/splunk/inventory/*SNPM_CVC_*" [inv_device_links] search = eventtype=inv_records source="/data/snpm/splunk/inventory/*_DEVICE_LINKS_*"\\ [inv_nni] search = eventtype=inv_records source="/data/snpm/splunk/inventory/*_NNI_*" NOT source="*IPACT_SNPM_NNI_LINKS*"\\ [inv_rsp_cvc_interconnect_svc] search = eventtype=inv_records source="/data/snpm/splunk/inventory/*_RSP_CVC_INTERCONNECT_SVC_*"\\ [inv_sites_poi] search = eventtype=inv_records source="/data/snpm/splunk/inventory/*_SITES_POI_*"\\ [service-CombinedForwardingPlaneQueueGroupServiceIngressLogRecord] search = eventtype=sam_events ds=service.CombinedForwardingPlaneQueueGroupServiceIngressLogRecord [sam_events] search = index=apm_main eventtype=da_host sourcetype=snpm:sam:kvp* [service-CombinedQueueGroupEgressLogRecord] search = eventtype=sam_events ds=service.CombinedQueueGroupEgressLogRecord [service-ServiceEgressOctetsLogRecord] search = eventtype=sam_events ds="service.ServiceEgressOctetsLogRecord" [summary_snr_histogram] search = (index="summary_apm_snr" eventtype=search_head) OR (eventtype="summary_data") snpm_type="SNR UTIL" [summary_cvc_util] search = (index="summary_apm_cvc" eventtype=search_head) OR (eventtype="summary_data") snpm_type="CVC UTIL" [savvi_log] search = index=apm_main eventtype=da_host (source="/var/log/savvi/*" OR source="/opt/titan/log/*") [summary_data] search = (index="apm_snpm" eventtype=search_head) search_name="*summary*" [summary_ipact] search = (index="summary_apm_ipact" eventtype=search_head) OR (eventtype="summary_data") snpm_type="IPACT_CVC" [summary_ipact_avc] search = (index="summary_apm_ipact" eventtype=search_head) OR (eventtype="summary_data") snpm_type="IPACT_AVC" [summary_cvc_bh] search = (index="summary_apm_cvc" eventtype=search_head) OR (eventtype="summary_data") snpm_type="CVC BH" [summary_enni_group] search = (index="summary_apm_enni" eventtype=search_head) OR (eventtype="summary_data") snpm_type="ENNI UTIL GRP" [summary_enni_port] search = (index="summary_apm_enni" eventtype=search_head) OR (eventtype="summary_data") snpm_type="ENNI UTIL PRT" [sam_enni_port] search = (eventtype=sam_events ds="equipment.InterfaceAdditionalStatsLogRecord" displayedName="Port*" NOT (suspect=true) ) [sam_enni_group] search = (eventtype=sam_events ds="equipment.InterfaceAdditionalStatsLogRecord" displayedName="Lag*" NOT (suspect=true) ) [summary_sanitized] search = ( eventtype=summary_cvc_util inboundUtilizationPcnt>= 0 inboundUtilizationPcnt< 200 ) OR\\ ( eventtype=summary_snr_histogram utilPcnt>=0 utilPcnt<200 ) OR\\ ( eventtype=summary_enni* (rx_utilPcnt>=0 rx_utilPcnt<200 ) (tx_utilPcnt>=0 tx_utilPcnt<200 )) OR\\ ( eventtype=summary_cvc_util NOT inboundUtilizationPcnt=* ) OR\\ ( eventtype=summary_snr_histogram NOT utilPcnt=* ) OR\\ ( eventtype=summary_enni* (NOT rx_utilPcnt=*) OR (NOT tx_utilPcnt=*)) [sam_cvc_downstream_1_1] search = eventtype=sam_events ds=service.CombinedForwardingPlaneQueueGroupServiceIngressLogRecord [sam_cvc_downstream_n_1] search = eventtype=sam_events ds="service.ServiceEgressOctetsLogRecord" svcId=* (policerId=6) NOT (statMode=no-stats) [sam_cvc_upstream_1_1] search = eventtype=sam_events ds="service.ServiceEgressOctetsLogRecord" sapId="lag-*" NOT statMode="no-stats" [sam_cvc_upstream_n_1] search = eventtype=sam_events ds="service.ServiceEgressOctetsLogRecord" queueId=6 sapId="lag*" [summary_filter] search = ( eventtype=summary_cvc_util inboundUtilizationPcnt < 0 OR inboundUtilizationPcnt> 200 ) OR\\ ( eventtype=summary_snr_histogram utilPcnt < 0 OR utilPcnt >200 ) OR\\ ( eventtype=summary_enni* (rx_utilPcnt < 0 OR rx_utilPcnt>200 ) OR (tx_utilPcnt<0 tx_utilPcnt>200 )) [inv_nni_links] search = eventtype=inv_records source="*IPACT_SNPM_NNI_LINKS*" [sam_ltss] priority = 5 search = index=apm_main eventtype=ltss_da_host ds=service.ServiceEgressOctetsLogRecord [ltss_inv_sites_poi] search = eventtype=ltss_inv_records source="*_SITES_PO*"\\ [ltss_inv_rsp_cvc_interconnect_svc] search = eventtype=ltss_inv_records source="*_RSP_CVC_INTERCONNECT_SVC_*"\\ [ltss_inv_records] priority = 5 search = index=apm_main sourcetype = snpm:ipact:kvp2 eventtype=ltss_da_host [ltss_inv_nni_links] search = eventtype=ltss_inv_records source="*IPACT_SNPM_NNI_LINKS*" [ltss_inv_nni] search = eventtype=ltss_inv_records source="*IPACT_SNPM_NNI*" NOT source="*IPACT_SNPM_NNI_LINKS*"\\ [ltss_inv_device_links] search = eventtype=ltss_inv_records source="*IPACT_SNPM_DEVICE_LINKS*"\\ [ltss_inv_cvc] search = eventtype=ltss_inv_records source="*IPACT_SNPM_CVC*" [ltss_inv_avc] search = eventtype=ltss_inv_records source="*IPACT_SNPM_AVC*" ACCESS_SERVICE_TECH_TYPE="Satellite"\\ [ltss_summary_ipact_avc] search = eventtype=ltss_summary_data index="summary_apm_ltss_ipact" snpm_type="IPACT_AVC_LTSS" [ltss_summary_cvc_util] search = eventtype=ltss_summary_data index=summary_apm_ltss_cvc snpm_type = "LTSS CVC UTIL" snpm_version="V1.3" [ltss_summary_avc_util_daily] search = eventtype=ltss_summary_data index=summary_apm_ltss_avc_daily snpm_type = "LTSS AVC UTIL DAILY" snpm_version="V1.5.1" [ltss_summary_avc_util] search = eventtype=ltss_summary_data index=summary_apm_ltss_avc snpm_type = "LTSS AVC UTIL" snpm_version=V1.5 [ltss_summary_cvc_util_breach] priority = 5 search = eventtype=ltss_summary_data index=summary_apm_ltss_cvc snpm_type="CVC UTIL BREACH" [ltss_summary_short_term] search = eventtype=ltss_summary_data index=summary_apm_ltss snpm_type = "LTSS SHORT TERM" [ltss_summary_fsd_fsr] search = eventtype=ltss_summary_data index=summary_apm_ltss snpm_type="LTSS FSD FSR DAILY" [ltss_summary_data] search = (index=summary_apm_ltss* (eventtype=search_head)) [ltss_summary_beam_util] search = eventtype=ltss_summary_data snpm_type = "LTSS BEAM UTIL" snpm_version="V1.5.2" [search_head] search = (host=svsss0000003np-heavy OR host=svsss0000203np-heavy) [da_host] search = (host=svapm0000004np) [ltss_da_host] search = (host=svapm0000004np) [sam_aas] priority = 5 search = index=apm_main host=svapm0000008ee sourcetype="snpm:sam:kvp2" ds="service.ServiceEgressOctetsLogRecord" [aas_summary_enni_group] priority = 5 search = (index="summary_apm_enni" eventtype=search_head) OR (eventtype="aas_summary_data") snpm_type="AAS ENNI UTIL GRP" [aas_avc_status_daily] search = index=apm_snpm snpm_type="AAS_IPACT_AVC_STATUS" [snpm_inv_avc] search = eventtype=snpm_inv_records source="*IPACT_SNPM_AVC*" [snpm_inv_cvc] search = eventtype=snpm_inv_records source="*IPACT_SNPM_CVC*" [snpm_inv_rsp_cvc_interconnect_svc] search = eventtype=snpm_inv_records source="*_RSP_CVC_INTERCONNECT_SVC_*" [snpm_inv_nni] search = eventtype=snpm_inv_records source="*IPACT_SNPM_NNI*" NOT source="*IPACT_SNPM_NNI_LINKS*" [snpm_inv_records] search = index=apm_main sourcetype=snpm:ipact:kvp2 eventtype=da_host [snpm_inv_sites_poi] search = eventtype=snpm_inv_records source="*_SITES_PO*" [snpm_summary_ipact_avc] search = index="summary_apm_ipact" snpm_info="Ipact Summary for AVC SNPM" (eventtype=search_head) [aes_summary_ipact_avc] search = index="summary_apm_ipact" snpm_info="Ipact Summary for AVC SNPM" ACCESS_SERVICE_TECH_TYPE="Fibre" (eventtype=search_head) [aes_avc_status] search = index="summary_apm_ipact" snpm_type="SNPM_IPACT_AVC_STATUS" ACCESS_SERVICE_TECH_TYPE="Fibre" (eventtype=search_head) [aes_summary_ipact_cvc] search = index="summary_apm_ipact" snpm_type = "IPACT_CVC_NNI_AES" (eventtype=search_head) [aes_cvc_status] search = index="summary_apm" snpm_type="IPACT_CVC_STATUS_AES" (eventtype=search_head) [aes_nni_status_summary] search = index="summary_apm" snpm_type="NNI_STATUS_AES" (eventtype=search_head) [aes_inni_summary_util_discard_status_combined] search = index="summary_apm" snpm_type="inni_summary_combined_aes" (eventtype=search_head) [aes_inni_summary] search = index="summary_apm" snpm_type="inni_group_summary_aes" (eventtype=search_head) [aes_enni_summary] search = index="summary_apm" snpm_type="enni_group_summary_aes" (eventtype=search_head) [sam_inni_group] search = (eventtype=sam_events ds="equipment.InterfaceAdditionalStatsLogRecord" displayedName="Lag*" NOT (suspect=true) ) [aas_sam_inni_group] search = (eventtype=aas_sam_events ds="equipment.InterfaceAdditionalStatsLogRecord" displayedName="Lag*" NOT (suspect=true) )\\ [aas_sam_events] priority = 5 search = index=apm_main eventtype=da_host sourcetype=snpm:sam:kvp* [aas_sam_enni_group] priority = 5 search = eventtype=aas_sam_events ds="equipment.InterfaceAdditionalStatsLogRecord" displayedName="Lag*" NOT (suspect=true) [aes_egress_drop] search = eventtype=sam_events ds="Service.NetworkEgressOctetsLogRecord" [aes_egress_discard] search = index="summary_apm" snpm_type="aes_egress_discard" [ltss_summary_fsd_fsr_enhance] search = eventtype=ltss_summary_data index=summary_apm_ltss snpm_type="LTSS FSD FSR DAILY ENHANCE" [ltss_summary_short_term_enhance] search = eventtype=ltss_summary_data index=summary_apm_ltss snpm_type = "LTSS SHORT TERM ENHANCE" [aes_summary_ipact_avc_device] search = index="summary_apm_ipact" snpm_info="Ipact Summary for AVC SNPM & Device Links" ACCESS_SERVICE_TECH_TYPE="Fibre" (eventtype=search_head) [aes_avc_util_discard_summary] search = index="summary_apm_avc" snpm_type ="AES AVC UTIL & DISCARD ALL" (eventtype=search_head) [ltss_summary_ipact_avc_30mintest] search = eventtype=ltss_summary_data index="summary_apm_ltss_ipact" snpm_type="IPACT_AVC_LTSS_30MIN" '; 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