Android : I've disistallated eclipse and now i can't reinstall adt plugin for android

I've disistallated eclipse and now i can't reinstall adt plugin for android development it says i'm on mac yosemite

i do as explained here http://developer.android.com/sdk/installing/installing-adt.html#Download

Cannot complete the install because of a conflicting dependency. Software being installed: Android Development Tools 23.0.6.1720515 (com.android.ide.eclipse.adt.feature.feature.group 23.0.6.1720515) Software currently installed: Eclipse IDE for PHP Developers 1.3.2.20110218-0812 (epp.package.php 1.3.2.20110218-0812) Only one of the following can be installed at once: Common Eclipse Runtime 3.6.0.v20100503 (org.eclipse.equinox.common 3.6.0.v20100503) Common Eclipse Runtime 3.6.100.v20120522-1841 (org.eclipse.equinox.common 3.6.100.v20120522-1841) Cannot satisfy dependency: From: Android Development Tools 23.0.6.1720515 (com.android.ide.eclipse.adt.feature.feature.group 23.0.6.1720515) To: org.eclipse.core.runtime 3.7.0 Cannot satisfy dependency: From: Eclipse IDE for PHP Developers 1.3.2.20110218-0812 (epp.package.php 1.3.2.20110218-0812) To: org.eclipse.epp.package.php.feature.feature.group [1.3.2.20110218-0812] Cannot satisfy dependency: From: Core Runtime 3.8.0.v20120912-155025 (org.eclipse.core.runtime 3.8.0.v20120912-155025) To: bundle org.eclipse.equinox.common [3.6.100,4.0.0) Cannot satisfy dependency: From: EPP PHP Feature 1.3.2.20110218-0812 (org.eclipse.epp.package.php.feature.feature.group 1.3.2.20110218-0812) To: org.eclipse.rcp.feature.group 3.6.0 Cannot satisfy dependency: From: Eclipse RCP 3.6.0.v20100519-9OArFKvFtsd7WLUKh-DcYTS (org.eclipse.rcp.feature.group 3.6.0.v20100519-9OArFKvFtsd7WLUKh-DcYTS) To: org.eclipse.equinox.common [3.6.0.v20100503] Cannot satisfy dependency: From: Eclipse RCP 3.6.1.r361_v20100827-9OArFLdFjY-ThSQXmKvKz0_T (org.eclipse.rcp.feature.group 3.6.1.r361_v20100827-9OArFLdFjY-ThSQXmKvKz0_T) To: org.eclipse.equinox.common [3.6.0.v20100503] Cannot satisfy dependency: From: Eclipse RCP 3.6.2.r362_v20101104-9SAxFMKFkSAqi8axkv1ZjegmiBLY (org.eclipse.rcp.feature.group 3.6.2.r362_v20101104-9SAxFMKFkSAqi8axkv1ZjegmiBLY) To: org.eclipse.equinox.common [3.6.0.v20100503]

i don'understand what is this conflict i have also jboss installed and i've deleter eclipse luna, could you help me? thanks