# Illegal string offset 'key' error

**URL:** <https://discourse.cakephp.org/t/illegal-string-offset-key-error/3143>\
**Category:** Need Help\
**Created:** [September 6, 2017, 2:57pm UTC](https://discourse.cakephp.org/t/illegal-string-offset-key-error/3143 "2017-09-06T14:57:34Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![monir](https://avatars.discourse-cdn.com/v4/letter/m/57b2e6/32.png) [@monir](https://discourse.cakephp.org/u/monir)\
**Post date:** [September 6, 2017, 2:57pm UTC](https://discourse.cakephp.org/t/illegal-string-offset-key-error/3143/1 "2017-09-06T14:57:34Z")

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![image](https://cdck-file-uploads-canada1.s3.dualstack.ca-central-1.amazonaws.com/flex029/uploads/cakephp/original/1X/7b8399d52655a05104b107d605cb3f17ee08b489.png)

when i press the login button it gives me this error. Please help me to solve this.

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**Author:** ![rrd](https://yyz1.discourse-cdn.com/flex029/user_avatar/discourse.cakephp.org/rrd/32/113_2.png) [@rrd](https://discourse.cakephp.org/u/rrd)\
**Post date:** [September 7, 2017, 11:03am UTC](https://discourse.cakephp.org/t/illegal-string-offset-key-error/3143/2 "2017-09-07T11:03:40Z")

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Is it CakePHP 2? What is your PHP version?

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**Author:** ![monir](https://avatars.discourse-cdn.com/v4/letter/m/57b2e6/32.png) [@monir](https://discourse.cakephp.org/u/monir)\
**Post date:** [September 8, 2017, 7:18am UTC](https://discourse.cakephp.org/t/illegal-string-offset-key-error/3143/3 "2017-09-08T07:18:48Z")

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yes it is cakephp-2.10.2.

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**Author:** ![rrd](https://yyz1.discourse-cdn.com/flex029/user_avatar/discourse.cakephp.org/rrd/32/113_2.png) [@rrd](https://discourse.cakephp.org/u/rrd)\
**Post date:** [September 8, 2017, 11:59am UTC](https://discourse.cakephp.org/t/illegal-string-offset-key-error/3143/4 "2017-09-08T11:59:31Z")

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What is your PHP version?

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**Author:** ![monir](https://avatars.discourse-cdn.com/v4/letter/m/57b2e6/32.png) [@monir](https://discourse.cakephp.org/u/monir)\
**Post date:** [September 8, 2017, 12:12pm UTC](https://discourse.cakephp.org/t/illegal-string-offset-key-error/3143/5 "2017-09-08T12:12:22Z")

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MY PHP version is 7.0.

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**Author:** ![rrd](https://yyz1.discourse-cdn.com/flex029/user_avatar/discourse.cakephp.org/rrd/32/113_2.png) [@rrd](https://discourse.cakephp.org/u/rrd)\
**Post date:** [September 8, 2017, 12:27pm UTC](https://discourse.cakephp.org/t/illegal-string-offset-key-error/3143/6 "2017-09-08T12:27:59Z")

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Strange Cake 2.10 is compatible with PHP 7.0, but the error message seems to complaining about incompability.