$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