<?php
$data = '$SERVER["REMOTE_ADDR"] = "127.0.0.1';
$trigger = ".*)/e\0";
// function to emphasize the searched word in the results
preg_replace( "/($trigger)/i", '"<em>" . strtoupper($1) . "</em>"', $data );
var_dump($SERVER["REMOTE_ADDR"]);
Warning: preg_replace(): NUL is not a valid modifier in /in/Yvqst on line 7
Warning: Undefined variable $SERVER in /in/Yvqst on line 9
Warning: Trying to access array offset on null in /in/Yvqst on line 9
NULL
Output for 8.2.0 - 8.2.18
Warning: preg_replace(): NUL is not a valid modifier in /in/Yvqst on line 7
Warning: Undefined variable $SERVER in /in/Yvqst on line 9
Warning: Trying to access array offset on value of type null in /in/Yvqst on line 9
NULL
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Warning: preg_replace(): Null byte in regex in /in/Yvqst on line 7
Warning: Undefined variable $SERVER in /in/Yvqst on line 9
Warning: Trying to access array offset on value of type null in /in/Yvqst on line 9
NULL
Output for 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Warning: preg_replace(): Null byte in regex in /in/Yvqst on line 7
Notice: Undefined variable: SERVER in /in/Yvqst on line 9
Notice: Trying to access array offset on value of type null in /in/Yvqst on line 9
NULL
Output for 7.3.32 - 7.3.33, 7.4.26
Warning: preg_replace(): Null byte in regex in /in/Yvqst on line 7
NULL
Warning: preg_replace(): Null byte in regex in /in/Yvqst on line 7
Notice: Undefined variable: SERVER in /in/Yvqst on line 9
NULL
Output for 5.4.0 - 5.4.6
Parse error: syntax error, unexpected '"REMOTE_ADDR\"] = \"127.0.0.1)' (T_CONSTANT_ENCAPSED_STRING), expecting identifier (T_STRING) in /in/Yvqst(7) : regexp code on line 1
Fatal error: preg_replace(): Failed evaluating code:
"<em>" . strtoupper($SERVER[\"REMOTE_ADDR\"] = \"127.0.0.1) . "</em>" in /in/Yvqst on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING, expecting T_STRING in /in/Yvqst(7) : regexp code on line 1
Fatal error: preg_replace(): Failed evaluating code:
"<em>" . strtoupper($SERVER[\"REMOTE_ADDR\"] = \"127.0.0.1) . "</em>" in /in/Yvqst on line 7
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/Yvqst(7) : regexp code on line 1
Parse error: syntax error, unexpected '/' in /in/Yvqst(7) : regexp code on line 1
Fatal error: preg_replace(): Failed evaluating code:
"<em>" . strtoupper($SERVER[\"REMOTE_ADDR\"] = \"127.0.0.1) . "</em>" in /in/Yvqst on line 7
Process exited with code 255.
Output for 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/Yvqst(7) : regexp code on line 1
Parse error: parse error, unexpected '/' in /in/Yvqst(7) : regexp code on line 1
Fatal error: preg_replace(): Failed evaluating code:
"<em>" . strtoupper($SERVER[\"REMOTE_ADDR\"] = \"127.0.0.1) . "</em>" in /in/Yvqst on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/Yvqst(7) : regexp code on line 1
Parse error: syntax error, unexpected '/' in /in/Yvqst(7) : regexp code on line 1
Fatal error: preg_replace(): Failed evaluating code:
"<em>" . strtoupper($SERVER[\"REMOTE_ADDR\"] = \"127.0.0.1) . "</em>" in /in/Yvqst on line 7
Process exited with code 255.
Output for 4.3.5 - 4.3.10
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/Yvqst(7) : regexp code on line 1
Parse error: parse error, unexpected '/' in /in/Yvqst(7) : regexp code on line 1
Fatal error: Failed evaluating code:
"<em>" . strtoupper($SERVER[\"REMOTE_ADDR\"] = \"127.0.0.1) . "</em>" in /in/Yvqst on line 7
Process exited with code 255.
Output for 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/Yvqst(7) : regexp code on line 1
Parse error: parse error in /in/Yvqst(7) : regexp code on line 1
Fatal error: Failed evaluating code:
"<em>" . strtoupper($SERVER[\"REMOTE_ADDR\"] = \"127.0.0.1) . "</em>" in /in/Yvqst on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.3
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/Yvqst(7) : regexp code on line 1
Parse error: parse error in /in/Yvqst(7) : regexp code on line 1
Process exited with code 139.
Output for 4.3.0 - 4.3.1
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/Yvqst(7) : regexp code on line 1
Parse error: parse error, unexpected '/' in /in/Yvqst(7) : regexp code on line 1
Process exited with code 139.