Probleme with script execution

when i want to execute a script i have this message

Verbosity was 0 and is now 10
== Using SIP RTP CoS mark 5
– Executing [0033972451870@incoming:1] Answer(“SIP/ovh-simple-00000000”, “”) in new stack
– Executing [0033972451870@incoming:2] NoOp(“SIP/ovh-simple-00000000”, “-- Incomming call FROM “0032476445836” <0032476445836> to 0033972451870”) in new stack
– Executing [0033972451870@incoming:3] AGI(“SIP/ovh-simple-00000000”, “testCo.php”) in new stack
– Launched AGI Script /usr/share/asterisk/agi-bin/testCo.php
testCo.php: Failed to execute ‘/usr/share/asterisk/agi-bin/testCo.php’: Permission denied
– Executing [0033972451870@incoming:4] Hangup(“SIP/ovh-simple-00000000”, “”) in new stack
== Spawn extension (incoming, 0033972451870, 4) exited non-zero on ‘SIP/ovh-simple-00000000’

but i have verify the directory and file permission
usr : 755
share : 755
asterisk : 755
agi-bin : 755
testCo.php : 777 => i have test with 755 it’s the same

I work in asterisk 1.8.20

Thx for reply

i have found it’s selinux that it do bug the permission but anyone know how i want to do to permisse my file to be execute