PHP Curl cannot resolve domain name

Lnmp,dns set error, curl arbitrary address errors:

Couldn't resolve host 'example.com'

file_get_contentsError:

Warning: file_get_contents(): php_network_getaddresses: getaddrinfo failed: Name or service not known

1. Direct normal in Shell curl -I http://example.com , ping is normal
2. Invalid Curl setting CURL_IPRESOLVE_V4

Reply content:

Lnmp,dns set error, curl arbitrary address errors:

Couldn't resolve host 'example.com'

file_get_contentsError:

Warning: file_get_contents(): php_network_getaddresses: getaddrinfo failed: Name or service not known

1. Direct normal in Shell curl -I http://example.com , ping is normal
2. Invalid Curl setting CURL_IPRESOLVE_V4

I have a question that your example.com replaced with the domain name you specifically need not. Sometimes, the carrier's DNS server may not have a corresponding IP address mapping relationship, so the site cannot be found.

All right... Find the problem, PHP running in the chroot environment, turn off the good.

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